2.1 Introduction Energy is an essential ingredient for human life on earth. It is used in all
activities of society, for preparing meals, making cloth, building house and other
activities. Human beings have needed and used energy at an increasing rate for
their sustenance and well-being. One of the important requirements of energy for
man is in the form of food. A brief description of the profile of energy is presented
in this chapter.
2.2 Types of Energy Sources
Primary and Secondary Energy
Common primary energy sources are coal, oil, natural gas, and biomass
(such as wood). Other primary energy sources available include nuclear energy
from radioactive substances, thermal energy stored in earth’s interior, and
potential energy due to earths’ gravity.
Commercial Energy and Non Commercial Energy
The energy sources that are available in the market for a definite price are
known as commercial energy. By far the most important forms of commercial
energy are electricity, coal and refined petroleum products.
Non-Commercial Energy
The energy sources that are not available in the commercial market for a
price are classified as non-commercial energy. Non-commercial energy sources
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include fuels such as firewood, cattle dung and agricultural wastes, which are
traditionally gathered, and not bought at a price and used especially in rural
households. These are also called traditional fuels. Non-commercial energy is
often ignored in energy accounting.
Renewable and Non-Renewable Energy
Renewable energy (inexhaustible) are mostly biomass based and are
available in unlimited amount in nature. Since these can be renewed over a
relatively short period of time, energy sources that are replenished more rapidly
are termed as renewable. These include firewood or fuel wood from forest, petro
plants, plant biomass ie. agricultural waste like animal dung, solar energy, wing
energy, water energy in the form of hydro-electricity and tidal energy and
geothermal energy etc.
Non-renewable energy (exhaustible) are available in limited amount and
develop over a longer period of time. As a result of unlimited use, they are likely
to be exhausted one day. These include coal, mineral, natural gas and nuclear
power. Coal, petroleum and natural gases are common sources of energy being
organic (biotic) in this origin. They are also called fossil fuels.
2.3 Sources of Energy for Cooking in India
It is evident from Table 2.1 that around two-third of Indian households still
use firewood and other bio mass for cooking purpose. It is noted that this source is
the most harmful in terms of the emission of green house gases. Combustion of
20
biomass (firewood, dung cake, etc.) emits not only carbon dioxide, but also nitrous
(nitric) oxides and methane. The environment friendly fuel of LPG is being used
by only about one-fifth of the population. Government attempts to provide
kerosene and LPG have not touched around three-fourth of the households in the
country.
Table: 2.1 - Primary Source of Energy Used for Cooking
Source Percent
Firewood and chips 61.4
LPG 17.1
Dung cake 9.5
Kerosene 5.0
Others 5.0
No cooking arrangement 2.0
Total 100
Source: Compiled from National Sample Survey 57th round (2001-02)
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2.3.1 Regional Variation in the Dependence on Sources of Cooking
Energy
Table 2.2 shows that the dependence on firewood is more intense in states
such as Uttaranchal, Chattisgarh, Rajastan, Orissa, MP, Jharkhand, and in most of
the hilly states located in the North and Northeastern parts of the country. On the
other hand, only a small percentage of households use firewood, and the majority
use LPG in urbanized areas such as Delhi, Chandigarh, Goa, Pondichery, etc.
Kerosene is also widely used in urbanized areas and localities such as Sikkim and
Lakhshadeep where probably the availability of biomass is limited.
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Table: 2.2 - State-wise Distribution of Primary Source of Cooking
Energy
Fire wood
and chips LPG
Dung
cake Kerosene Others
No cooking
arrangement
Jammu & Kashmir 47.2 44.5 4.2 3.3 0.5 0.3
Himachal Pradesh 70.9 21.9 0 4.6 0.4 2.1
Punjab 29.7 37.6 13.9 15.1 1.7 2
Chandigarh 2.1 81.1 0 8.6 0 8.2
Uttaranchal 76.3 19.3 0.3 3.7 0.1 0.3
Haryana 40.1 37.6 17.8 3.9 0 0.6
Delhi 1.8 60 0.3 32 0.1 5.7
Rajastan 81.4 13.1 0.9 3.6 0.4 0.6
Uttar Pradesh 51.8 10.3 33.7 1.8 0.9 1.5
Bihar 47.3 3.2 20.7 2.2 26.3 0.2
Sikkim 46.7 24.4 0 18.1 0.6 10.2
Arunachal Pradesh 73.1 23.7 0 0.8 2.3 0
Nagaland 85 12.4 0.5 1.3 0 0.7
Manipur 70.1 25.4 0.3 1.4 1.8 1
Mizoram 54.5 42 0.1 1.8 1.6 0
Tripura 82.9 14.6 0 2.2 0.3 0
Meghalaya 89.8 7.2 0 0.8 0.9 1.3
Assam 83.6 14.3 0.1 1.6 0 0.4
West Bengal 53.8 14.5 3.4 6.6 19.4 2.2
Jharkhand 73.6 5.5 2.1 0.7 17 1.1
Orissa 88 3 3.8 1.1 3.6 0.6
Chattisgarh 77.5 4.4 9.3 0.3 8.3 0.2
Madhya Pradesh 77 16.2 1.5 3.9 0.6 0.9
Gujarat 57.2 24.3 2 11.4 2.4 2.7
Daman & Diu 14.1 39.6 0 27 0 19.3
Dadra & N. Haveli 52 27.6 0 12.2 0 8.2
Maharastra 47.7 31.3 0 9.2 7.2 4.5
Andra Pradesh 69.5 21.6 0.2 5.1 0.7 2.9
Karnataka 64.4 25.1 0.2 4.7 0.1 5.6
Goa 25.3 56.3 0 9.8 0 8.6
Lakshadweep 54 27.2 0 10.9 0 8
Kerala 69.6 26 0 1.8 0.3 2.3
Tamil Nadu 57.4 25.4 0.1 13.4 0.9 2.7
Pondicherry 35 45.5 1.5 12.2 0 5.8
A & N Islands 63.2 17.3 0 16 0 3.6
All India 61.4 17.1 9.5 5 4.9 2 Source: Compiled from National Sample Survey 57
th round (2001-02)
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2.3.2 Long Term Energy Scenario for India
Coal
Coal is the predominant energy source for power production in India,
generating approximately 70 percent of the total domestic electricity. Energy
demand in India is expected to increase over the next 10-15 years. Although new
oil and gas plants are planned, coal is expected to remain the dominant fuel for
power generation. Despite significant increases in total installed capacity during
the last decade, the gap between electricity supply and demand continues to
increase. The resulting shortfall has had a negative impact on industrial output and
economic growth. However, to meet the expected future demand, indigenous coal
production will have to be greatly expanded. Production currently stands at around
290 million tonnes per year, but coal demand is expected to more than double by
2010. Indian coal is typically of poor quality and as such requires to be
beneficiated to improve the quality; Coal imports will also need to increase
dramatically to satisfy industrial and power generation requirements.
Oil
India's demand for petroleum products is likely to rise from 97.7 million
tonnes in 2001-02 to around 139.95 million tonnes in 2006-07, according to
projections of the Tenth Five-Year Plan.
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Natural Gas
India's natural gas production is likely to rise from 86.56 million cmpd in
2002-03 to 103.08 million cmpd in 2006-07. It is mainly based on the strength of a
more than doubling of production by private operators to 38.25 mm cmpd.
Electricity
India currently has a peak demand shortage of around 14 percent and an
energy deficit of 8.4 percent. Keeping this in view and to maintain a GDP (gross
domestic product) growth of 8 percent to 10 percent, the Government of India has
very prudently set a target of 215,804 MW power generation capacity by March
2012 from the level of 100,010 MW as on March 2001, that is a capacity addition
of 115,794 MW in the next 11 years.
Nuclear Energy
Nuclei of atoms can be broken down into two or more parts through
artificial methods. In the same way two or more nuclei of light weight can be
combined to form a big nucleus. The above two types or reactions are called
"Nuclear Reactions". During these reactions some of the atomic mass is converted
into energy. This energy is called Nuclear Energy. The amount of the nuclear
energy can be estimated by the following formula (By Einstein)
E = Energy
M = Mass
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C = Velocity of light (3 x 108 m/sec.)
Even a very small quantity of matter can produce a greater amount of
nuclear energy (because C2 = 9 x 1016
) for example, the energy produced by 3.5
millions tonnes of coal or 12 million tonnes of oil is equivalent to the nuclear
energy produced by one tonne of Uranium. Uranium, Thorium and Radium are
some important radio active elements, which give off specific rays like α (Alpha),
β (Beta) and ϒ (Gamma) due to spontaneous disintegration of their nuclei.
Atomic Reactors are furnaces used to release energy during nuclear
reactions. The energy is generated in the form of heat, which is converted into
steam. The steam can be used in running steam - turbines to produce electric
energy. When a nucleus is broken down into two or more parts, the process is
called "nuclear fission". The combination of two or more lighter nuclei of low
mass is called "Nuclear Fusion".
Solar Energy
The energy of sun called solar energy can be used effectively. The earth
receives energy continuously from the sun at the rate of about 75,000 x 10 KWH
of energy every day Green Plants have the capacity to trap the solar energy and
they convert to solar energy into chemical form by a process called photo
synthesis. Most part of solar energy is left unused. Just 0.1% of this could meet the
total world energy requirements. Scientists have developed ways and means to
26
trap solar energy artificially and convert into various forms like electrical,
chemical and mechanical.
The solar radiation coming to the earth is called INSOLATION and it is in
the form of electro magnetic waves. One square centimetre area on earth receives
two calories of solar energy in one minute. It can be increased through artificial
means to meet the energy requirement. Photo - chemical change involves changes
due to heating effects of sun rays. eg. during our child hood days we might have
played with leaves to burn papers by sun rays.
Some chemical changes also can occur in objects that absorb solar energy.
eg. bright colour clothes fade away when put into strong sunlight continuously.
Black surfaces absorb sunlight and thus get heated. Sun light also causes the
synthesis of starch in green plants (Photosynthesis).
6Co2 + 12 H2O Sunlight C6H12O6 + 6H2O6 + 6O2
When sunlight falls on some specific metals like sodium, potassium and
lithium it activates the electrons inside it. The excited electrons after some time
return to their original level after releasing the energy, It is called 'Photo Electric
Effect'.
All the above principles are used to convert solar energy into heat, chemical
and electrical energy.
Solar cooker, solar oven (developed by Jodhpur's Central Arid Zone
Reseach Institute (CAZRI) space heating buildings during cold weather in USA
signals at RS are examples of how solar energy can be used effectively.
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Advantages
1. Can be used in remote and rural areas, ships and military camps where
there are no power lines.
2. Solar energy is available free of cost.
3. Cost of maintenance is very low.
4. The greatest and foremost advantage is that it does not produce wastes or
pollutants.
Disadvantages
1. Depends upon total hours of sunshine in a day affected by cloudy weather
and short winter days.
2. Solar cells, solar panels and solar energy conversion equipments are costly.
Progress in India
Solar cookers, solar heaters, solar desalination plants, solar photovoltaic
electric power, generators and solar pump sets are being used even in remote
villages. The following organisations develop solar energy system.
1. Department of Non - conventional energy sources (DNES)
2. Rural Electrification Corporation
3. Indian Institutes of Technology
4. Department of Metallurgy of Pune Engineering College.
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Wind Power
The wind is air in motion. It is caused by differential heating of land, water,
hills and mountain slopes by sun rays. There is kinetic energy in wind. Even in
ancient times the great sailors utilized kinetic energy of the wind in sailing their
ships around the globe.
The kinetic energy of wind is caused by its motion, the higher the velocity
of wind the greater the kinetic energy in it. This velocity of wind is affected by
solar radiation, which varies from season to season and from place to place. Strong
winds blow in coastal plains and hill. The kinetic energy of the wind can be
utilized by converting it into mechanical form. With this wind mills are operated.
Large blades of wind mills can convert much of the wind energy into mechanical
form.
The installation of wind power generation system depends upon extensive
survey, site selection, construction and machinery plantation. The continuous
supply of electricity generated from wind power needs installation of
electronically operated black - boxes (Synchronus Generator) which are very
costly. At times there may be no wind and the power generation may stand still.
Progress in India
Wind energy is pollution free and a renewable source of energy. California
with 17,000 turbines generating 1500MW is the world’s largest producer of wind
energy. India started utilization of the wind power during the period of the VIIth
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five year plan. It was found that on 80 per cent days winds in Karnataka,
Tamil Nadu, Andhra Pradesh, Maharashtra and Gujarat below 10Km / hour for
morethan 10 hours and 20 hours on 40 per cent days. Large scale research in this
direction started in 1983. As a result wind power farms were established in
different parts of Indian states and union territories. In 1995, the total wind energy
potential was estimated, around 20,000 MW.
In Tamil Nadu, Muppandal in Kanyakumari district and Kayathar in
Thoothukudi District are the major wind energy producing places. Many villages
in and around Muppandal developed economically because of this wind power.
Lot of employment opportunities were created. As the village Muppandal is
situated in the mountain pass area of Western Ghat naturally it is well suited for
the wind energy production.
Bio Mass Power
Bio mass means dry weight of organic matter produced by plants, their
derivatives and wastes. It includes plant parts, animals and animal wastes. As
biomass is the product of Photosynthesis by plants, bio mass energy is regarded as
another form of indirect use of solar energy. It is very cheap, renewable and
almost pollution free. Bio-mass energy has from the following three ways.
1. By incineration or controlled burning of fuel wood and agricultural left
over.
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2. By converting bio - mass into alcohol through thermo chemical process and
using it in engines.
3. By making bio-gas (or Gobar gas) through bio-chemical conversion ie,
anaerobic (without air fermentation (digestion) of moist cattle.
The energy from bio-mass is very high. One cubic metre of bio-gas
contains about 6000 calories which is equivalent to 0.8 litres of petrol, or 0.6 litres
of crude oil or 1.5m3 of natural gas, or 1.4kg of charcoal or 2.2 KWH of electrical
energy.
Most of bio-gas is Methane (CH4) at normal temperature and pressure. It is
highly combustible and gives non - luminous flame. Estimates show that it can
produce 22,500 million cubic metres of methane (Gobar gas) and 206 million
metric tonnes of organic manual every year. Scientists have identified several
species of plants (Petro - plants) that can be used as bio-mass sources. Green
leaves, animal urine, animal fodder left over or waste and perishable food wastes
are other bio - mass resources besides the animal dung. (Gobar)
The only limitation of this energy source is its availability. Population
explosion or urbanization has already put excessive pressure on available
cultivable land. So where is the land for the creation of more bio - mass?
Progress in India
The department of Non - conventional energy sources launched a National
Bio - gas Development Programme. The installation of these plants is going on all
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over the country at the block and panchayat level in rural areas. During the year
1984 - 1985 alone 1,50,000 Bio - gas plants were installed. Now it is estimated
that about 3,30,000 bio-gas plants are working in India.
2.3.3 Power Generation in India
The total power consumption in the State during the last twenty five years
has shown about six-fold increase. In Tamil Nadu, energy use has been increasing
at a faster rate in respect of domestic and agricultural purpose as compared to
commercial and industrial uses. However, in view of inadequate and intermittent
supply of power, a large number of industrial establishments have captive power
generation capabilities, which apparently explain the relatively low growth of
commercial and industrial use of energy. During the last three decades Tamil
Nadu’s total installed capacity has increased more than three and a half times. Yet,
the demand for electricity continues to increase at an accelerated rate with the
result energy and peaking shortages hamper the growth of industrial and other
sectors. Apparently, to meet the increasing demand for energy supply, the public
sector investment will necessarily have to be supplemented by capacity addition in
the private sector. The Government of India have initiated a number of measures
to further the pace of reforming the power sector in the country and make the State
Electricity Boards more vibrant. (Policy Initiatives: Government of India).
1. The energy Conservation Bill 2000, which envisages the efficient use of
energy and its conservation was introduced. Efforts are being made to
32
create awareness about energy conservation potential by better
housekeeping, proper maintenance and better control of instruments;
2. To ensure efficiency of the thermal plants, special schemes have been
devised to renovate / modernize and refurbish old plants. Plants at the verge
of senescence are to be modernized by inducting latest technologies;
3. Scheme for securitisation of dues of Central Sector Power and coal utilities
to assist the State Electricity Board to clear these dues was initiated;
4. Policy on Hydro Power Development lays stress on exploitation of hydel
potential available at a faster rate by providing of incentives viz.,
rationalizing the tariff for hydro projects and simplifying the procedure of
obtaining clearances. Projects with less than 25 MW are to be given to the
Ministry of non - conventional energy sources;
5. The Government of India has formulated the revised Mega Power Policy to
generate power at the lowest possible tariff by setting up such plants at the
pit heads;
6. Assistance is given to the State's Power Sector to reform and for
investments on renovation and modernization of old and inefficient plants
and strengthening of the distribution system.
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2.3.4 Energy and Environment
The interaction between energy and environment has been dealt with
extensively by ecologists and environmental economists. A given abiotic
physicochemical environment and its particular biotic assemblage of plants,
animals and microbes constitute an ecological system or ecosystem; a pond, a
field, a forest, an ocean, or even an aquarium’. Human use of energy has an effect
on the eco system in which the energy is used and the changes caused contribute,
probably negatively to the environment leading to ecological imbalance. The toxic
effects of chemical and physical agents affect not only the living organisms but
also the environment as a whole.
The pattern of generation and use of energy indiscriminately, over a period
of time create the global concern on environmental protection. The greenhouse
effect, acid rain, the ozone hole, and the immediate health hazards necessitate
environmental awareness, at all levels of human activities.
Oil, natural gas, and coal being the major energy resources, their depletion
poses the need for identifying alternate energy resources. Huge amount of money
is invested on identifying alternative energy resources besides exploring oil and
gas in different areas in the globe. While it is certain that the globe will not
sustain the energy requirements from conventional sources the need for identifying
renewable energy resources is acute.
The actions to protect the global environment cannot be an event that may
last for just a few decades; it has to be a long drawn process. As such the effort has
34
to be all pervasive. Conceptually in a broader sense the energy and environmental
education has to be at the first instance to for the policy makers at the national and
Global level. Economists and politicians may not go for short term profits at the
cost of long term welfare. Also, they should assume, while taking any decision
that their primary responsibility is to leave their country as a better place for the
next generation. Environmental education should result in a firm belief that the
present generation may have to sacrifice a lot in the interest of the future
generations.
The other end from which the environmental education can start is in the
minds of the children. The desired end points of interest at different levels of
biological organization should be taught to the children and they must be made
aware of the environmental values that are to be protected. Special teaching
methods may be deployed wherein the children’s learning is activity-based and
experiential. Children must be exposed to various fields of study on ecology and
environment, disasters and managing disasters and so on. Ready made teaching
and training kits may be designed and used.
2.4 Energy Development in Tamil Nadu
The most important single factor, which can act as a constraint on the
economic growth of a country, is the availability of energy. There is a direct
correlation between the degree of economic growth, the size of per capita income
and per capita consumption of energy. Since energy is an essential input of all
35
productive economic activity, the process of economic development inevitably
demands increasing higher levels of energy consumption. So the energy
development is very important in all the countries.
Energy development has been given high priority by the State and Centre
over the plan periods. In Tamil Nadu, the State Sector investment for power
development has been very high. Cumulatively upto the IX plan, over 22 percent
of plan expenditure had been devoted for the development of this vital
infrastructure. The power sector attracted the highest allocation during the first
three plan periods (37.7%, 42.2% and 37.6% respectively). It may be noted that a
sum of Rs.8,030 crores accounting for 20.07 percent of X plan outlay has been
earmarked for energy development.
Energy Sector Policies and Financial Support Measures
Among the factors that have led to distortion in the supply and demand of
cleaner petroleum-derived cooking fuels (Kerosene, LPG) at national level have
been government price controls, particularly subsidies on domestic kerosene and
LPG, and protection of state oil monopolies, for example through import
restrictions and discrimination against the private sector.
Although the measures may have been introduced with a view to making
cleaner fuels more accessible to the poor, universal fuel subsidies have often
tended to be counter-productive, with wealthier people, who have better access to
these fuels, gaining most advantage.
36
To reduce the adverse fiscal impact of such policies, some governments
have supplemented a heavy kerosene subsidy with a ration system that made
subsidised kerosene available in small amounts, but not sufficient for cooking. In
addition, a price differential between domestic kerosene and LPG on one hand and
other petroleum products that are close substitutes (e.g. commercial kerosene and
LPG, and diesel) have led to illegal diversion of domestic fuels to the commercial
and transport sector; thus further reducing their availability for the poor.
Lack of incentives and enabling environments for the private sector may
also slow growth in supply, removal of infrastructure bottlenecks and development
of effective marketing strategies. Although in some countries, the recent removal
of subsidies on kerosene is believed to have pushed poor families back to reliance
on biofuels, "across-the board" subsidies are neither a sustainable nor an efficient
tool for addressing the needs of the poor.
Subsidy schemes should always be carefully assessed and designed to
target households in greatest need. In particular, carefully targeted financial
support for technical development and production of appliances, and for
infrastructure for marketing and transport may be reasonable.
Biogas: In another successful programme, financial incentives were used in
a biogas project in India where meeting of quality standards and durability of the
biogas system were rewarded in the form of an additional bonus. A mechanism
that is receiving growing attention is the provision of affordable micro-credit to
37
households: if used to support the purchase of efficient appliances that reduce fuel
(and health) costs in the long term, this could be a powerful instrument for change.
The generation of power and the consumption of power in Tamil Nadu are
given in Table 2.3.
Table: 2.3 – Electricity in 2000 - 2001
A. Generation of Electricity (Gross) - (in m.u.) Percentage
a. Hydro 5,450 13.05
b. Wind Mill Generation 18 0.04
c. Thermal 19,464 46.60
d. Power Purchased 16,617 39.80
e. Gas Turbine 215 0.51
Total 41,764 100.00
B. Consumption of Electricity (in m.u.)
a. Agriculture 9,095 27.22
b. Industry 11,751 35.16
c. Commercial 3,148 9.42
d. Domestic 7,176 21.47
e. Public Lighting and Water works 902 2.70
f. Sales to other States 211 0.63
g. Miscellaneous (including Traction and Railways) 1,135 3.40
Total 33,418 100.00
Source: Tamilnadu hand book 2001.htm
38
There was a moderate gain during 2002 – 03 both in building installed
power generation capacities (4.3 %) and also on the gross power availability
(5.7%), despite a setback in the hydel generation. To meet the increasing demand,
the Tamil Nadu Electricity Board resorted to a higher level of purchase during the
year and ensured unrestricted supply to all the categories of consumers. The per
capita consumption of power increased from 567 units in 2001 – 02 to 586 units in
2002 – 03. This information is given in Table 2.4.
The total installed capacity of Tamil Nadu Electricity Board as on
31.12.2004 was 9394 Mega Watts (MW). This comprises 5381 MW of TNEB’s
own projects, 1066 MW of Private Sector Projects, 2587 MW as share from
Central Sector Projects and external assistance of 360 MW. Apart from this, a total
capacity of 1664 MW is available from wind mills in the Private Sector and 19
MW of power from the wind mills of TNEB. Besides this a total capacity of 275
MW is available from Co-generation plants and 31 MW from Bio-mass plants.
The maximum peak demand so far reached is 7,468 MW (on 23.02.2005).
The growth of energy consumption is expected to be of the order of 6% per
annum. Energy consumption during 2004 - 05 upto December 2004 was 38,462
Million Units (MU) with a maximum daily consumption of 154.942 MU on
23.02.2005.
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Table: 2.4 – Power Sector – Profile
Details 2000 - 01 2001 - 02 2002 - 03
1. Installed Capacity (MW)
i. State’s Own
ii. Central Sector
iii. IPPs
iv. Captive Power
2. Power Generation (mu)
3. Power Purchase (mu)
4. Gross Power Availability (mu)
5. Total consumption within the state (mu)
6. Per capita consumption (units)
7. Number of consumers (lakhs)
8. Peak Demand (lakhs)
9. Line loss (%)
10. Auxiliary Consumption (mu)
7,513.4
5,213.1
1,905.0
301.7
93.6
25,147
16,617
41,764
33,418
510
145.73
6,290
16.50
1,672
7,924.7
5,213.1
1,913.0
729.1
69.5
25,562
18,358
43,920
35,202
567
153.43
6,687
16.25
1,791
8,268.8
5,308.1
1,903.0
988.2
69.5
24,929
21,263
46,414
36,347
586
160.16
6,957
18.0
1,878
Source: Economic Appraisal 2002 – 03, Evolution and Applied Research Department, Government
of Tamil Nadu, Kuralagam, Chennai, P.86.
As on 31.12.2004 there were 1069 substations, 1.46 lakh kms. of Extra
High Tension / High Tension (EHT/HT) lines, 4.75 lakh kms. of Low Tension
(LT) lines, 1.59 lakh distribution transformers and 169.10 lakh service
connections.
40
To meet the increase in demand, the TNEB has planned to augment its
generating capacity to 2,408.8 MW and to correspondingly expand the
transmission and distribution system during the X Plan period (2002 - 07).
2.4.1 Performance of Power Generation in Tamil Nadu
In Tamil Nadu, energy use has been increasing at a faster rate in respect of
domestic and agricultural purpose as compared to commercial and industrial uses.
However, in view of inadequate and intermittent supply of power, a large number
of industrial establishments have captive power generation capabilities, which
apparently explains the relatively low growth of commercial and industrial use of
energy. During the last three decades Tamil Nadu’s total installed capacity has
increased more than three and a half times. Yet, the demand for electricity
continues to increase at an accelerated rate with the result energy and peaking
shortages hamper the growth of industrial and other sectors. The profile of the
power sector in Tamil Nadu is presented in Table 2.5.
The table 2.5 reveals that, the year 1999 - 2000 witnessed an accelerated
growth in power generation by 6.4 percent and the total power consumption by
9.3 percent as compared to (-) 4.0 percent and 3.8 percent respectively during
1998 - 99. Power purchases which increased by 18.5 percent in 1998 - 99
decreased to 13.3 percent in 1999 - 2000. The per capita consumption steadily
increased from 430 units in 1997 - 98 to 452 units in 1998 - 99 and further to 480
units in 1999 - 2000.
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Table: 2.5 - Power Sector: A Profile in Tamil Nadu
Items
1997- 98
%
Change
1998 - 99
%
Change
1999 - 00
%
Change
1. Installed Capacity (MW)
6,916.105
0.1
7,119.605
2.9
7,203.555
1.2
2. Generation (mu)
23,066
0.5
22,141
-4.0
23,549
6.4
3. Power Purchases (mu)
10,999
12.8
13,031
18.5
14,764
13.3
4. Gross Power Availability
(mu)
34065
4.2
35,172
3.2
38,313
8.9
5. Total Power
Consumption
(Million units)
26,740
4.5
27,657
3.8
30,238
9.3
6. Per Capita
(Consumption units)
430
2.4
452
5.1
480
6.2
7. Number of Agricultural
Pumpsets Energized
(lakhs)
16.10
2.5
16.44
2.1
16.79
2.1
Source: www.govt.tn.in.
Note: % percentage change over previous year
The table concludes that the power generation increases year by year, and at
the same time the power purchase also increases. So there is a negative
42
relationship between the power generation and power purchase. It is not
appreciated. So the government should take necessary action to increase the power
generation.
2.4.2 Capacity of State's Own Projects
The installed power generating capacity at the command of Tamil Nadu
Electricity Board gained visible improvements during 1998 - 99 and
1999 - 2000. The source-wise number of powerhouses and installed capacities are
depicted in Table 2.6.
Table: 2.6 – Tamil Nadu State Owned Projects
Source
No. of Power Houses Installed Capacity (MW)
1997 - 98 1998 - 99 1999 - 00 1997 - 98 1998 - 99 1999 - 00
Hydro 27 28 30 1955.75
(38.5)
1963.25
(38.6)
1995.20
(39.0)
Thermal 4 4 4 2970
(58.5)
2970
(58.4)
2970
(58.1)
Gas 2 2 2 130
(2.6)
130
(2.6)
130
(2.5)
Wind 10 10 10 19.355
(0.40)
19.355
(0.4)
19.355
(0.4)
Total 43 44 46 5,075.105
(100.0)
5,082.605
(100.0)
5,114.555
(100.0) Source: www.govt.tn.in.
Note: Figure in brackets indicates share to total
43
Table 2.6 explains that, the total installed capacity of the State’s own
projects rose from 5075.105 MW in 1997 - 98 to 5114.555 MW in 1999 - 2000.
All the additions (39 MW) came from the three-hydel stations – Sathanur (7.5
MW), Parsons Valley (30MW) and Tirumurthi Mini (1.95 MW). It is significant
to note that the State has been taking efforts for exploiting even the mini and
micro hydel sources to augment the capacity. With no additions possible in respect
of other sources, the share of hydel capacity marginally improved from
38.5 percent in 1997 - 98 to 39.0 percent during 1999 - 2000. In Tamil Nadu
thermal and hydropower houses are the important sources of energy.
2.4.3 Shared Capacity from Central Sector Projects
Substantial quality of the power has been added to the State grid by means
of purchases made from Central Sector Projects such as Neyveli I and II, National
Thermal Power Corporation (NTPC), Ramagundam and Madras Atomic Power
Project (MAPP), Kalpakkam. One notable addition to this category is the Kaiga
Atomic Power station in Karnataka, the purchases from which were linked with
the State grid in 1998 - 99. The installed capacities of the three sectors are
presented in Table 2.7.
44
Table: 2.7 - Installed Capacity: Central Sector Projects (MW)
Project 1997 - 98 1998 - 99 1999 - 00
1. Neyveli I & II 1,041 1,041 1,041
2. NTPC 470 470 470
3. MAPP & Kaiga 330 330 382
Total 1,841 1,841 1,893
Source: www.govt.tn.in.
Table 2.7 reveals that, the share of installed capacities from the Central
Sector Projects, a modest addition of 52 MW was possible with the
commissioning of the Kaiga Nuclear Power Project in Karnataka during
1999 - 2000. This addition came as a much needed relief after several years of
stagnancy and helped improve the capacity due from Central Sector Projects from
1,841 MW to 1893 MW.
2.4.4 Capacity Creation by Private Sector in Tamil Nadu
The Tamil Nadu government encourages the private power sectors - both
thermal power and windmill power. The capacity creation of private sector is
explained in Table 2.8.
Private sector came into play in power development for the first time in
1997 - 98. In 1998 - 99, a quantum of 196 MW (4 units each of 49 MW) Diesel
45
Electric Power Project (DEPP) was commissioned. Encouraged by the private
sector participation, a total capacity of 7,390.06 MW has been awarded to private
sector. Even if a portion of it could be brought to fruition every year with
favourable pricing agreements, the power needs of the State could be adequately
met. It is also noteworthy, that the State has made great strides in exploiting non-
conventional sources of energy, especially, wind energy with the help of private
sector.
Table: 2.8 - Capacity Creation: Private Sector (MW)
Category 1997 - 98 1998 - 99 1999 - 00
1. Thermal Power Project (GMR Vasavi) - 196.0 196.0
2.Wind Mills
i. Muppandal
166.1
117.0 117.7
ii. Perungudy 261.3 283.5
iii. Kayathar and Devi Kulam 46.2 48.7 63.1
iv. Poolavadi
275.6
143.9 143.9
v. Sultanpet 46.5 51.4
vi. Kethanur 88.4 91.8
Total (Wind Mills) 487.9 705.8 751.4
Grand Total 487.9 901.8 947.4
Source: www.govt.tn.in.
46
2.4.5 Power Generation
Remarkable recovery in the thermal generation and sustained improvement
in the generation of performance of the gas turbines and windmills helped
compensate the set back in the hydel generation during 1999 - 2000. It is displayed
in Table 2.9.
Table: 2.9 - Power Generation - Source-wise
Source
Electricity Generated (mu)
1997 - 98 1998 - 99 1999 –00
Hydel 5,287 (24.3) 4,918 (-7.0) 4,444 (-9.6)
Thermal 17,682 (-4.9) 17,076 (-3.4) 19,861 (10.5)
Wind & Gas 97 (-5.8) 147 (51.5) 244 (66.0)
Total 23,066 (0.5) 22,141 (-4.0) 24,549 (6.4)
Source: www.govt.tn.in
Note: Figure in bracket indicates percentage change over the previous year
Table 2.9 indicates the electricity generated through hydel capacity has
been declining in the recent years from 5,287 mu in 1997-98 to 4,918 mu in 1998 -
99 and further to 4,444 mu in 1999 - 2000. The thermal power generation is
displayed in Table 2.10.
47
Table: 2.10 - Thermal Power Generation
Source
Generation (mu) PLF (%)
1997 - 98 1998 - 99 1999 – 00 1997 - 98 1998 - 99 1999 – 00
Ennore 1,924 1,799 1,295 49 46 33
Thoothukudi 6,906 6,596 7,449 75 72 81
Mettur 5,440 5,004 5,786 74 68 78
North Chennai 3,412 3,677 4,331 62 67 78
Total 17,682 17,076 18,861 68 66 72
Source: www.govt.tn.in
Table 2.10 shows the details of the total thermal power generation during
1999 - 2000 that increased by 10.5 percent to reach 18,861 mu. The performance
of all the thermal stations was quite impressive save that of the Ennore Thermal
Plant. The overall Plant Load Factor (PLF) which indicates the operational
efficiency of the plants and defined as the ratio of average load carried by a power
station to the maximum load, increased from 66 percent in 1998 - 99 to 72 percent
in 1999 - 2000. This table discloses that the total thermal power generation
increased at a considerable rate.
2.4.6 Non-conventional Sources of Energy
Wind energy, solar energy, biomass and other forms of bio energy, tidal
energy, fuel cell, ocean-thermal and geo-thermal energy are important among
renewable energy sources. Among these sources, though the first three renewable
48
energy sources, namely, wind, solar and bio energy are being harnessed in a big
way in India and in Tamil Nadu, the other sources have not yet reached a stage of
commercial exploitation. The following table is given to show the energy
generation from non-conventional source.
Table: 2.11 - Energy Generation from Non-conventional Source (mu)
Source 1999- 00 2000 - 01 2001 - 02 2002 - 03
1. Government
Wind
Solar
Co-generation Plants
27.2
0.05
60.0
19.5
0.13
54.0
17.8
0.12
54.0
19.5
0.15
54.0
Total 87.25 73.63 71.92 73.65
2. Private
Wind
Solar
Co-generation Plants
1,129.4
--
312
1,070.7
339
-
1,239.3
0.031
340.0
1,286.2
0.018
546.0
Total 1,441.4 1,409.7 1,579.331 1,832.218
Source: Economic Appraisal 2002 – 03, Evolution and Applied Research Department,
Government of Tamil Nadu, Chennai, p.95.
The major share of this comes from wind energy followed by biogas based
co-generation plants in sugar industry. It may be noted that investments in these
projects have mainly come from private sector.
49
2.5 Energy Consumption in Households
The household sector, the most important one, consumes 70 percent of the
energy even now which is absolutely necessary for survival. Of the various facts
of energy problems confronting the developing countries, the problem of energy,
affecting the household sector is important. As Elizabeth Cecelski observes, “In
most of the developing countries, the household sector is still the largest single
energy consuming sector”.1
A household requires a minimum amount of energy for sheer survival. But,
the actual amount of energy consumed by a household depends on several factors
such as education, income, family size, price of energy occupation, cost of stove,
fuel types, plinth area of the house in sq. feet, hours of cooking and nature of stove
and location of kitchen that also influence household energy consumption.
Households require both commercial and non-commercial source of energy
for various uses. Commercial sources include electricity, kerosene, petrol, diesel
and L.P. Gas. Non-commercial sources consist of firewood, dung cake, and
agricultural wastes. Among the fuels consumed by the households, firewood
forms a major share. In the face of global energy crisis with the fast depleting
situation of primary sources of energy like coal, oil and gas and depleting forest
resources in the country, it is essential not only to use these fuels more efficiently
and sensibly but also to look for better and improved heating and cooking ovens.
1 Elizabeth Cecelski, “Energy and Rural Women’s Work: Crisis. Response and Policy
Alternatives”, International Labour View, 126 (1): 1987, p.41.
50
In the context of these situations, the present study pays attention to
investigate the existing patterns of energy consumption of the households and to
suggest ways to optimize energy use with care to protect the environment.
2.6 Rural Energy Consumption Pattern
The Tiruchendur taluk is about 30 kilometres from the district headquarters.
It covers an area of 546 sq.km and comprises 51 villages. According to the 2001
census, the total population of the taluk was 3,08,154. The rural energy
consumption patterns in Tiruchendur taluk are given in Table 2.12.
A study of the energy consumption pattern in the Tiruchendur taluk
indicates that although all types of fuels are currently in use, most domestic needs
are met only by firewood. Monthly per capita consumption of fuel wood was 89
kg, of kerosene 0.25 litres (mainly for lighting), of electricity 2 kWh, and LPG gas
12 kg.
51
Table: 2.12 – Rural Energy Consumption Pattern in Tiruchendur Taluk
Basic Data
Geographical Area (according to village records)
Villages
Households
Population (2001 census)
Rural Population
Net Area Shown (2005)
Cultivable wasteland
Forest Area
Livestock Population
Number of renewable Energy Systems installed
Solar Heaters
Photovoltaic panel for street lighting
Sq.km
No.
No.
Persons
Persons
H.a
H.a
H.a
No.
No.
No.
546
51
37,569
3,08,154
1,57,557
15,634
11,773
5,168
1,45,772
2
125
Source: Compiled from DRDA records, Collector Office, Thoothukudi.
2.7 Electricity in Thoothukudi
The Thoothukudi Thermal Power Station (TTPS) is the biggest power
station in Tamil Nadu under the control of the Tamil Nadu Electricity Board with
three units of 2 tonne M.W. each generating 50 million units of energy daily. The
first unit was commissioned in July, 1979, the second in December 1980 and the
third in March 1982. This power station feeds about 1/3 of the total power
demand of Tamil Nadu.
52
Generation of Electricity (in M.U)
a) Wind Mill Generation : 28.1
b) Thermal : 6,596
c) Power purchased : 28.1
Consumption of Electricity (in M.U)
a) Agriculture : 36
b) Industry : 369
c) Commercial : 60
d) Domestic : 132
e) Public lighting and water works 25
2.7.1 Biogas Plant
In the Thoothukudi district people seldom use cow dung as fuel for
domestic purposes. On the contrary it is used both as a manure and meagre input
for the production of cobar gas in household and institutions for cobar gas plants
are very liberal items. The life span of these plants has been estimated at 25 years.
Cobar gas plants are available in three models. They include K.K. model, Janata
model and Deenapandu model. The biogas plant installation in the Thoothukudi
district is presented in Table 2.13.
53
Table: 2.13 – Biogas Plant Installation in Thoothukudi District
(in Number)
Year
Target
Achieved
Achievement
percentage
1994 – 95
1995 – 96
1996 – 97
1997 – 98
1998 – 99
1999 – 00
2000 – 01
2001 – 02
2002 – 03
2003 – 04
2004 – 05
2005 – 06
200
210
100
50
40
40
65
70
60
60
41
41
200
75
56
45
17
40
65
70
60
60
41
32
100.00
35.71
56.00
90.00
42.50
100.00
100.00
100.00
100.00
100.00
100.00
78.05
Total 977 761 77.89
Source: Compiled from District Hand Book, 2005 –06.
The table 2.13 reveals that, there are 761 biogas plants installed in the
Thoothukudi district. Year after year the plant shows a downward trend. The
average achievement of a biogas plant is 77.89 percent. So the government should
take necessary steps to create awareness related to biogas plants. Bio-gas is a
renewable and the cheapest source of energy.
54
2.7.2 Improved Chulha
As a major harmony device the government has embarked on a massive
programme of supplying improved chulha through local government and
voluntary organizations. The chulha supplied are in different models. They are
Tamil Nadu Agricultural University model, Sukhad model and smokeless model.
The panchayat unions, District Rural Development Agency and voluntary
organizations, with a subsidy of 50 percent, supply these chulhas. Portable
chulhas enjoy more advantages like better burning of firewood, no smoke, no air
blowing, high thermal efficiency and finally saving of fire wood over 25 percent.
Table 2.14 shows that in 1990 –91 the total improved chulhas supplied in
Thoothukudi district was 2,340, but it has decreased to 825 numbers of improved
chulhas in the year 2004 – 05. The improved chulhas supplied by the panchayat
union is less compared to those supplied by the District Rural Development
Agency. The table draws the conclusion that the improved chulhas supplied in the
Thoothukudi district show a decreasing trend because the people change their
energy pattern.
55
Table: 2.14 – Improved Chulahs Supplied in the Thoothukudi District
(No.)
Year
By Panchayat
Union
By DRDA
Total
1990 – 91
1991 – 92
1992 – 93
1993 – 94
1994 – 95
1995 – 96
1996 – 97
1997 – 98
1998 – 99
1999 – 00
2000 – 01
2001 – 02
2003 - 04
2004 - 05
1340
1400
200
-
-
200
650
850
630
500
300
250
250
325
1000
1000
500
1000
1000
-
1500
1000
800
1000
800
500
500
500
2340
2400
700
1000
1000
200
2150
1850
1430
1500
1100
750
750
825
Source: Compiled from DRDA records, Thoothukudi.
2.7.3 Solar Street Light Installation in the Thoothukudi District
In the Thoothukudi district totally 175 solar street lights have been
installed. Table 2.15 shows the number of such solar street lights in the district
year wise.
56
Table: 2.15 – Solar Street Light Installation in the Thoothukudi District
(in Number)
Year
Target
Achieved
Achievement
percentage
2002 – 03
2003 – 04
2004 – 05
2005 – 06
25
50
50
50
25
50
50
50
100
100
100
100
Total 175 175 100
Source: Compiled from District Hand Book (2005 –06)
The table 2.15 reveals that in the year 2002 – 03 the Thoothukudi district
installed the solar streetlights. In the year 2002 – 03, 25 solar streetlights were
installed but in the year 2003 – 04, 50 solar streetlights were installed. After that
there is no improvement in this regard.
2.7.4 Kerosene
It is the most popular conventional type of commercial energy source in use
among households. In 2001 family cardholders in ‘A’ grade municipalities were
entitled to get a minimum of not less than 10 litres of kerosene per month. But the
same was fixed at five litres in B grade municipalities and town panchayats and
three litres in village panchayats. The details regarding kerosene consumption
through fair price shops in the Tiruchendur taluk is presented in Table 2.16.
57
Table: 2.16 – Kerosene Consumption through fair price shops in the
Tiruchendur Taluk
(in Litre)
Year
Consumption
(per month)
Population
Covered
2000 – 01
2001 – 02
2002 – 03
2003 – 04
2004 –05
21,845
23,458
25,540
26,382
28,785
57,854
59,443
59,530
59,817
59,866
Source: District Statistical Office, Thoothukudi
Table 2.16 explains that in 2000 – 01, 21,845 litres of kerosene
consumption covered a population of 57,854. The average kerosene consumption
was 0.378 litre. In 2004 – 05 it was increased to 0.481 litre. The average
consumption of kerosene has increased and it means the people mostly use this
type of energy compared to the bio-fuels.
In the Tiruchendur taluk 145 ration shops distribute essential goods through
66,194 family cards. A block-wise distribution of ration shops and family cards is
given in Table 2.17.
58
Table: 2.17 – Ration Shops of the Tiruchendur Taluk
Block
No. of
Ration
Shops
BPL
Cards
APL
Cards
Total no. of
Family
Cards
Alwarthirunagari
Tiruchendur
Udangudi
52
48
45
10,768
13,896
10,540
9,884
11,596
9,510
20,652
25,492
20,050
Total 145 35,204 30,990 66,194
Source: Statistical Hand Book, 2004 - 05, Thoothukudi District, Thoothukudi
The table gives above accounts for the lowest number of ration shops in the
taluk. While distributing kerosene, ration shops disqualify those who own two
liquefied petroleum gas cylinders from availing themselves of the monthly quota
of it. However, those who own only one cylinder are rendered eligible for the
monthly supply of a minimum of just three litres.
2.8 District Profile
A brief description of the profile of the study area namely the Tiruchendur
block in the Thoothukudi district, is presented in this chapter. It provides a
backdrop for the analysis.
The Thoothukudi District carved out of the erstwhile Tirunelveli District in
1986 has certain rare features. The mixed landscape of the sea and the ‘theri’
(waste) lands has imbibed some special traits in the character of the sons of the
59
soil. Valour, devotion and patriotism are the watchwords of the people here. The
story of our country’s freedom struggle cannot be complete without mentioning
the supreme sacrifices of the illustrious sons of the district like V.O.Chidamparam
Pillai who brought the first Swadeshi ship ‘Galia’ to the Thoothukudi port and
Veerapandi Kattabomman who waged a war against the British.
The poet Subramania Bharathi born at Ettayapuram in this district was also
a proud son of the soil.
Inception
The Government in their G.O. Ms.No.535 / Revenue Department dated
23.4.1986 ordered the formation of a new district called the Chidambaranar
district which is named after the great patriot and freedom fighter Late
V.O.Chidambaram Pillai. It was formed on 8-9-1986, with its headquarters at
Tuticorin, by bifurcating the erstwhile Tirunelveli District.2 The district has been
renamed as the Thoothukudi district from 1997 as per the G.O. Ms. No. 618/
Revenue Administration (1) Department dated 1-7-1997.
Location
The Thoothukudi district is bounded by the Virudhunagar district on the
North, Tirunelvelli district on the South and West and the Bay of Bengal on the
2 District Industry Centre, Chidambaranar District at Tuticorin – Action Plan for 1989-90 to
1993 - 94, p. 2.
60
East. It lies between 0.8 and 45’ of the Northern longitude and 78 and 11’ of the
Eastern longitude. The total area of the district is 4621 square kilometres.3
There are three Revenue divisions (namely Thoothukudi, Kovilpatti and
Tiruchendur), eight taluks and 12 blocks in the district. This district comprises 19
town panchayats and two municipalities. There are 468 revenue villages grouped
in 408 panchayats.
Climate and Rainfall
The climate of Thoothukudi is neither too hot nor too cold. During the
months of April, May and June the Thoothukudi district is hot. During winter,
that is, in the months of December and January, the climate is pleasant.
Table: 2.18- Rainfall – Season-wise during 2003-04, Thoothukudi
District (in millimetres)
Seasons Period Normal
Rainfall Actual
Cold weather Jan-Feb 46.6 41.7
Hot weather March to May 112.2 108.6
South West monsoon June to September 86.8 48.1
North East Monsoon Oct to December 410.1 319.5
Total 655.7 517.9
Source: District Statistical Hand Book 2002 - 03, Thoothukudi District.
3 District Statistical Hand Book 2003 - 04, Thoothukudi District.
61
Tiruchendur Block
Alwarthirunagari Block
Udangudi Block
Map: 2.1 – Area of Study
62
The maximum temperature is 35.70 C and the minimum is 24.5
0 C. The
rainfall is high in the coastal taluks namely Thoothukudi and Tiruchendur. The
normal rainfall of the district is 655.7mm but the actual rainfall varies year to year,
and the variation is large.4
Table 2.20 reveals the rainfall in Thoothukudi district during 2002-‘03.
When the North East Monsoon started, the actual rainfall was higher namely,
319.5 millimetres. During the cold season the actual rainfall was very low that is,
41.7 millimetres.
Irrigation
Tambrabarani, the perennial river benefits about 19,000 hectares in the
Thoothukudi district, through 52 system tanks. The river rises from Agasthiar
Malai in Pothigai hills in the Western Ghats, passes through, Ambasamudram,
Tirunelveli, Srivaikuntam and Tiruchendur taluks (the former two taluks are in the
Tirunelveli District) (the latter two taluks are in the Thoothukudi district) and
enters into the sea at Punnakayal (in the Thoothukudi district) a place between
Thoothukudi and Tiruchendur. The most fertile lands lie on either sides of the
river5. The rest of the lands in other taluks are dry lands. In the taluks of
Tiruchendur, Srivaikuntam and some pockets of Thoothukudi, there are wind
blown sandy belts, red in colour, with sand dunes, which are locally known as
4 District Statistical Hand Book 2003 - 04, Thoothukudi District.
5 Durairaj.S, “An Agricultural Profile- Tuticorin”, The Hindu, dated January 1,1998 – Magazine B,
p.8.
63
‘Theri’. The net area under irrigation through government canal is 3,873 hectares,
through tank irrigation, 18,040 hectares, through tube wells 256 hectares and by
other wells 20,406 hectares.
Agriculture
The district economy is largely agrarian. Important agricultural crops are
paddy, chillies, banana, cumbu, chenna and cotton. The total cultivated area in the
Thoothukudi district is 1,65,998 hectares of which the net area sown is 1,60,992
hectares and the rest is 5,006 hectares.6. The intensity of cropping is very low,
because most of the cultivated land is rain fed.
Industry
The Thoothukudi coastal area is noted for salt manufacturing. At
Thoothukudi, the Central Government has a Research Centre for marine salt in
addition to the State Government’s units. There are two industrial estates in the
district, one at Kovilpatti and another at Thoothukudi. The major industrial units
in the Thoothukudi district are Southern Petro Chemical Industries Corporation
(SPIC), Tuticorin Alcaline Company (TAC), Dharangadara Chemical Works
(DCW), Sterlite Copper Smelting Industries, Heavy Water Plant and Thermal
Power Project.
6 District Statistical Hand Book 2003 - 04, Thoothukudi District.
64
Forest
The total reserved forest area is 11,012 hectares. In the total forest
products, timber contributes 69.857 cu.m., fuel wood 13,273 metric ton and
cashew 5.24 tons.
Demographic Situation
In the 2001census, the Thoothukudi district had a population of 15,72,773
persons of which 7,66,823 were males and 8,05,450 were females. The rural
population accounted for 9,07,500 persons while the urban population was
6,64,773. The density of population in the district was 340 persons per square
kilometre.7 The total population of the Tiruchendur taluk is 3,08,154 persons out
of which 1,45,714 are males and 1,62,440 females.
7 District Statistical Hand Book 2002 - 03, Thoothukudi District.
65
Table: 2.19 – Classification of Area and Population Block wise
(2001 Census) (in number)
Name of the Block
Area
(sq.k.m)
Population
Persons Male Female
Thoothukudi 366 4,05,363 2,03,368 2,01,995
Srivaikuntam 244 1,12,440 54,799 57,641
Karunkulam 349 79,443 38,673 40,770
Tiruchendur 136 1,18,862 56,591 62,271
Udangudi 197 72,415 33,454 38,961
Alwarthirunagari 213 1,16,877 55,669 61,208
Satankulam 276 80,396 36,151 44,245
Ottapidaram 738 1,14,759 56,989 57,770
Kovilpatti 419 2,04,371 1,00,254 1,04,117
Kayathar 570 1,03,713 50,236 53,477
Vilathikulam 623 91,560 44,936 46,624
Pudur 490 71,810 35,439 36,371
Total 4,621 15,72,773 7,66,823 8,05,450
Source: Block Statistical Hand Book (2004 - 2005)
66
Literacy
The Thoothukudi district ranks second in literacy in the state with
81 percent of the population being literate.
Table: 2.20 - The Literacy Rate as per 2001 Census (in percentage)
Category
Literacy Rate
Male
Female Total
Tamil Nadu 82.33 64.55 73.47
Thoothukudi 88.66 75.64 81.96
Source: Tamil Nadu – An Economic Appraisal, 2001 - 02 Department of Evaluation and
Applied Research (DEAR) Government of Tamil Nadu, Chennai, pp.S4 – S5.
Employment
The total workers in the district were 6,73,682, out of which male workers
were 4,30,386 and female workers, 2,43,296. The rural workers were 4,28,883
while urban workers were 2,44,799. The employment pattern shows that there
were 71,315 cultivators, 1,67,387 landless agricultural labourers, 45,783 persons
in household industry, and 3,89,197 other workers. There were 88,944 marginal
workers and 89,206 non-workers.8
Fisheries
On the eastern border of Thoothukudi district there are 24 coastal villages
ranging from Vembar village to Periathazhi village covering 135 kms. Marine
8 District Statistical Hand Book 2002 - 03, Thoothukudi District.
67
fishing is one of the sources of employment to the fisher folk. In 2001 the total
population of the fisher folk was 43,707 out of which 21,180 fisher folk were
involved in fishing and marketing operations. There were 20 fishermen co-
operatives and 13 fisher women co-operatives in the Thoothukudi district. Fisher
women were engaged chiefly in marketing fresh and dried fish. The per capita
income per family was only Rs.6,573. A Fisheries College with Research Institute
has been functioning since 1977 at Thoothukudi.9
Transport and Communications
The important towns and villages are well connected with a good network
of roads. The total length of roads in the Thoothukudi district is 4,705 km., out of
which the length of surfaced and unsurfaced is 4,556.373 and 148.698 km
respectively. The length of the National Highways in the Thoothukudi district is
112.4 km and that of the State Highways is 1,994.232 km. Municipality and
Municipal Corporation roads contribute a length of 202.106 km. The district has a
106.47 km length of railways. Thoothukudi is connected by Air transport from
June 1991 and the airport is located near Vagaikulam at a distance of 15 kms from
Thoothukudi.
9 Tamil Nadu Marine Fisher Folk Census year 2001 – Department of Fisheries, Government of Tamil Nadu,
pp. 210 – 212.
68
There are 39 post offices doing postal business alone and 406 post offices
doing post and telegraph works. The district has 95,155 telephone connections,
with 3,689 public call offices and 69 telephone exchanges.10
Port
The district has the pride of having a major Port, the Thoothukudi Harbour
Project renamed the Thoothukudi Port Trust. During 2003 – 04, 1517 vessels
entered Thoothukudi port and cargo to the tune of 1.36 crore tones are handled.
Exports of certain raw materials and finished products are shipped to about 20
foreign countries. The Thoothukudi port has been issued the prestigious ISO 9002
certificate for port operation and services and has joined the select group of world
ports by becoming the first Indian major port to get such certificates.
From the foregoing section on the profile of the study area, it is clear that
the Thoothukudi district has people of different occupations and the majority of
the workers earn their income through agriculture. Most of the villages are rain-
fed areas and paddy is cultivated mainly in the delta areas of the river
Thambarabarani. Agriculture is found to be the main occupation in the district. As
agricultural workers do not have regular employment throughout the year, they
have to earn their livelihood through other works during the off season.
10
District Statistical Hand Book 2003 - 04, Thoothukudi District.
69
2.8.1 Integral Rural Energy Programme
The District Rural Development Agency (DRDA) launched the Integrated
Rural Agency programme.
Biogas
Government approved Turnkey agencies have been entrusted to install
bio-gas plants in the district. They are Vivekananda Kendra, Kanyakumari, Centre
for Rural Technology, Tirunelveli and Bharat Ideal Corporation, Thoothukudi.
Normally 2 cubic metre or 3 cubic metre bio-gas plants are constructed in the
villages requiring a minimum of 3 cattle.
The National Project on Bio - Gas Development (NPBD) which caters to
the setting up of family type Bio - Gas plants is a central sector scheme and is
point number 19(d) of the 20 Point Programme. It has the following objectives:
1. To provide fuel for cooking purposes and organic manure to rural
households.
2. To mitigate the drudgery of rural women, reduce pressure on forests and
accentuate social benefits.
3. To improve sanitation in villages by linking sanitary toilets with Biogas
plants.
The cost of construction of a bio-gas plant is Rs.6,500. The rate of subsidy
is given below:
70
Capacity of the
Plant
Subsidy for SC/ST, SF/MF Western
Ghats notified hilly areas.
Subsidy for
others
1 Cu.m. to 10
Cu.m.
Rs.2,300
Rs.1,800
Additional subsidy for linking Biogas plants with sanitary toilets is
Rs. 500/- per plant.
Chulha
Under the National Programme on Improved Chulhas (NPIC) launched by
the Ministry of Non-conventional Energy Sources (MNES), of the Government of
India on 14 December 1993, the district Rural Developemnt Agency implemented
the programme at the district level. At the block level, there is a separate extension
cum Rural Welfare Department. They identify and select the beneficiaries at the
block level. Manons are given technical training about the installation and
maintenance of chulhas at agricultural engineering Colleges in Tamil Nadu.
Government approved agencies supply portable chulhas.
The NPIC is Point No. 19(c) of the Twenty point Programme and part of
the Minimum Needs Programme. Its objectives are:-
1. Fuel wood conservation
2. Elimination / reduction of smoke
3. Reduction in drudgery of women and children from cooking in smoky
kitchen and collection of fuel wood.
4. Environmental upgradation and check on deforestation.
71
5. Employment generation in rural areas.
Subsidy
Fixed models with chimney Rs. 40/- per chulha. Rate of self employed
workers Rs. 20/- per chulha for single pot, Rs. 30/- per chulha for two / three pots.
2.9 Tiruchendur Taluk Profile
The Tiruchendur taluk covers three blocks namely, Tiruchendur,
Alwarthirunagari and Udankudi. All the blocks are directly linked with every
nook and corner of the district by means of a very good network of roads.
2.9.1 Tiruchendur Block
A short description of Tiruchendur is presented in this subdivision. The
Tiruchendur block is situated in the south of the Thoothukudi District and situated
near the sea of Gulf of Mannar. This block is surrounded in the West and the
North by the Alwarthirunagari block, the East by Gulf of Mannar and the South by
the Udankudi block. The sea level of this block is 3.5 metre in height. The area of
this block is 135.68 sq. km. This block consists of 15 revenue villages and
Tiruchendur, Arumuganeri and Kayalpattinam are the most thickly populated
areas.
This block has a total area of 135.68 sq. kilometers. As per the 2001 census,
the population of this block was 1,18,862 out of which the male population was
56,591 and the female population 62,271. The number of SC/ST was 18,068,
72
which was 15 percent of the total population. The number of the rural population
was 28,360 that is 23.86 percent of the total population. The density of population
is 223 sq. km. The number of females per 1000 males is 1100.
The climate is pleasant from September to December. During summer that
is April to June it is hot.
With regard to education, the total number of literates is 90,438 out of
which, 44,522 are male (that is, 78.67 percent of the total male population) and
45,916 female (that is, 73.74 percent of the total women population of 62,271).
Tiruchendur is the main educational centre. There are 67 primary schools, 22
middle schools, three high schools, 11 higher secondary schools, two
matriculation higher secondary schools, five colleges and one ITI.
This block has a Chemical Industry, a large-scale industrial unit. Salt
process, coir making, ice manufacturing and mineral water processing industries
come under small-scale industries. Fishing is a very important job in this block.
Amali Nagar, Veerapandianpattinam and Kombuthurai are important fishing
centres in this block.
Occupational pattern shows that the total number of cultivators is 11,157.
Agricultural labourers (15,905) constitute 43.76 percent of the total work force.
There are 7,759 male agricultural workers and 8,146 female ones. The total
number of workers in cottage and household industries is 1,287, which contribute
only 3.54 percent of the total work force in the block. There are 391 male and 896
female workers in this category. Workers in other industries are 1,147. The
73
numbers of male and female workers are 105 and 1,042 respectively. They form
3.16 percent of the total work force. Other workers are 6,048 or 16.64 percent of
the total work force.
The total length of roads in this block is 21.9 km. The length of tar roads is
10.5 km, and of metal roads 8.62 km. The length of cement concrete roads is 1.18
km and the length of mud roads (earthern road) is 1.6 km.
The main crops cultivated in the block are paddy, banana, coconut,
groundnut, vegetables and fruits. The Tiruchendur block has few infrastructure
facilities and the cultivators mainly rely on the channel. The net area sown in this
block is 3,851 hectares. Current fallow and other fallow lands account for 2,761
hectares. The area under barren and uncultivated land is 549 hectares.
The Tiruchendur block has a large number of livestock like 24,115 cattle,
7,931 buffaloes, 11,123 sheep, 10,744 goats, 12 horses and ponies, 1,817 pigs, 436
donkeys and 9,063 poultry. Two milk co-operative societies are functiong in this
block and the total production of milk is 68,076 litres per year.
In this block all the 15 villages, 150 hamlets and four towns are electrified.
There are 1,686 tube lights and 29 sodium vapours in the streets.
74
2.9.2 Alwarthirunagari Block
A short description of Alwarthirunageri is presented in this subdivision.
Alwarthirunageri block is located almost on the southern side of the district. On
the northern side, the Ottapidaram block is situated. The Thoothukudi and
Srivaikundam blocks lie on the eastern side. The Satankulam and
Alwarthirunagari blocks are the eastern boundary of this block. To its southern
side, the Tirunelveli district lies. There are 31 village panchayats in this block.
With regard to education, there are eight pre-primary schools, 87 primary
schools, 34 middle schools, five high schools, eight higher secondary schools, an
Arts and Science College, an Engineering college, a Teachers’ Training College, a
polytechnic and an Art and Industrial School.
This block has a total area of 216.73 Sq. kilometres. As per the 2001
census, the population of this block was 1,16,877 out of which the male population
was 55,669 and the female population 61,208. The number of rural population was
76,474 that is 65.43 percent of the total population.
The density of population is 185 sq. km. The number of females per 1000
males is 910. The total numbers of literates is 87,966 out of which, 43,723 are
male (that is, 78.54 percent of the total male population) and 44,423 are female
(that is, 72.58 percent of the total women population of 61,208).
The total length of roads in this block is 143.3 km. The length of tar roads
is 86.85 km, and of metal roads 28.7 km. The length of saral roads is 17.35 km
75
and the length of mud, unsurfaced roads is one kilo metre and cement concrete
road, 9.4 km.
The main crops cultivated in the block are paddy, banana, blackgram,
groundnuts, and cotton. The Alwarthirunagari block has few infrastructure
facilities and the cultivators mainly rely on the channel. The net area sown in this
block is 7,761 hectares. Current fallow and other fallow lands account for 3,843
hectares. The area under barren and uncultivated land is 100 hectares. The forest
land occupies 88 hectares.
2.9.3 Udangudi Block
The Udangudi block is located on the South West of Tiruchendur and
surrounded by the Alwarthirunagari block, the Thiruchendur block, the
Sattankulam block and Gulf of Mannar.
There are sixteen revenue villages, seventeen village panchayats and a town
panchayat in this block. Udangudi town panchayat consists of two revenue
villages namely Udangudi and Kalankudiyerruppu. Kulasekarapattanam and
Manapadu are the sea-shore villages of this block.
Over thousand fishermen live at Manapadu, which is the boating centre in
this block. There are Palm leaf Women Industrial Co-operative Society and
Fishermen Co-operative Society at Manapadu and also an Industrial Co-operative
Coir Society at Kulsekarapattinam.
76
Parmankurichi is a Handloom centre wherein over 200 families depend on
weaving. The places of tourist attraction are Arul Migu Mutharamman Temple,
located at Kulasekarapattinum and Siluvai Church, located at Manapadu.
This block has a total area of 197 Sq. kilometres. As per the 2001 census,
the population of this block was 72,415 out of which the male population was
33,454 and the female population 38,961. The number of rural population was
52,723 that is 73.11 percent of the total population.
The total number of literates is 56,432 out of which, 26,649 are male and
29,783 female. The total number of rural literates is 41,011 that is, 77.79 percent
of the total rural population. The total number of urban literates is 15,421 (that is,
79.53 percent of the total urban population of 19,390).
The total number of work force in the block is 22,287 persons out of which
14,764 are male workers and 7,523 female workers. The percentage of workforce
of the total population is 30.91.
There are no medium or large-scale industries in this block. Occupational
pattern shows that the total number of cultivators is 3,108. Agricultural labourers
(5,085) constitute only 22.82 percent of the total work force. There are 4,184 male
agricultural workers and 901 female agricultural workers. The total number of
workers in the household industries manufacturing factory is 8,675 which
contribute 38.92 percent of the total work force in the block. There are 5,905 male
and 2,770 female workers in this category. Marginal workers are 2,824. The
numbers of male and female workers are 138 and 2,686 respectively. They form
77
12.97 percent of the total work force. Other workers are 2,595 or 11.64 percent of
the total work force.
The main crops cultivated in the block are paddy, coconut, banana, and
sugarcane. In the Udangudi block the cultivators mainly rely on the wells. The
net area sown in this block is 4,022 hectares and area more than once is 2,498
hectares. Current fallow and other fallow lands account for 3,566 hectares. The
area of barren and uncultivated land is 284 hectares. The forest land occupies
5,080 hectares.
In this block only ten biogas plants are installed. 16 revenue villages, one
town panchayat and 167 hamlets are electrified. There are 3,812 street tube lights,
175 sodium lights, 16 mercury lights and one tower light in this village.
78
2.10 Sample Profile
This section is devoted to discuss the characteristic features of sample
households. The areas of discussion include caste composition, sex-wise
distribution, age group, education, occupational classification, family size, housing
particulars, purpose of fuel use and electrification of the sample households in the
study area. A total sample size of 375 was randomly selected from the sample
villages.
2.10.1 Caste Composition of the Respondents
A bird’s-eye view of the caste composition of respondents is given in
Table 2.21.
Table: 2.21 – Caste Composition of the Respondents
(in Numbers)
Income
Groups
Backward
Most
Backward
Scheduled
Caste /
Tribe
Other
Caste
Total
Low
Marginal
Medium
High
73
(43.45)
14
(15.73)
24
(30.38)
13
(33.33)
38
(22.62)
36
(40.45)
18
(22.79)
11
(28.21)
44
(26.19)
26
(29.21)
26
(32.91)
8
(20.51)
13
(7.74)
13
(14.61)
11
(13.92)
7
(17.95)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 124
(33.07)
103
(27.47)
104
(27.73)
44
(11.73 )
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
79
Out of the total sample size, 124 respondents (33.07 percent) belong to the
backward class, which consists of 73 respondents from the low-income group, 14
from the marginal income group, 24 from the medium income group and 13 from
the high-income group. There are 103 respondents (27.47 percent) belonging to
the most backward class, out of which 38 come under the low-income group, 36
from the marginal income group, 18 from the medium income group and 11 from
the high-income group. Respondents in the Scheduled Caste and Tribe category
are 104 (27.73 percent) distributed as 44 from low income, 26 from marginal
income, 26 from medium income and eight from high-income groups.
The respondents other than the above categories are grouped as other caste.
There are 44 (11.73 percent) respondents out of which, 13 are from low income,
another 13 from marginal, 11 from medium and seven from high-income groups.
This table reveals that the majority of the respondents belong to the backward
class, 33.07 percent of the total, followed by Scheduled Castes and Tribes, 27.73
percent.
2.10.2 Sex -wise Distribution of the Respondents
Sex-wise distribution of the sample respondents is given in Table 2.22. Out
of the total sample size, 277 respondents (73.87 percent) are male which includes
133 from low income, 67 from marginal income, 51 from medium income and 26
from high-income groups. There are 98 (26.13 percent) females, which include 35
80
from low income, 22 from marginal income, 28 from medium income and 13 from
high-income groups. The majority of the respondents are male.
Table: 2.22 – Sex – wise Distribution of the Respondents
(in Numbers)
Income
Groups
Male
Female
Total
Low
Marginal
Medium
High
133
(79.17)
67
(75.28)
51
(64.56)
26
(66.67)
35
(20.83)
22
(24.72)
28
(35.44)
13
(33.33)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 277
(73.87)
98
(26.13)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
2.10.3 Age Wise Distribution of the Respondents
Table 2.23 explains the age distribution of sample households in a number
of years.
81
Table: 2.23 – Age – wise Distribution of the Respondents
(in Numbers)
Income
Groups
Below 30
years
30 – 45
Years
Above 45
years
Total
Low
Marginal
Medium
High
44
(26.19)
26
(29.21)
21
(26.58)
14
(35.90)
86
(51.19)
44
(49.44)
36
(45.57)
18
(46.15)
38
(22.62)
19
(21.35)
22
(27.85)
7
(17.95)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 105
(28.00)
184
(49.07)
86
(22.93)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
Table 2.23 reveals that the respondents who are below 30 are
105 (28 percent), those between 30 and 45, 184 (49.07 percent) and those above
45, 86 (22.93 percent). There are 184 respondents belonging to the age group of
30 – 45, distributed as 86 from low income, 44 from marginal income, 36 from
medium income and 18 from high-income groups.
2.10.4 Education Level of the Respondents
Among the factors determining household energy consumption, education
is also an important one. The details of the education levels of the respondents are
given in Table 2.24.
82
Table: 2.24 – Education Level of the Respondents
(in Numbers)
Income
Groups
Primary
Middle
Secondary
Higher
Studies
Total
Low
Marginal
Medium
High
37
(22.02)
11
(12.36)
17
(21.52)
9
(23.08)
64
(38.10)
34
(38.20)
28
(35.44)
12
(30.77)
45
(26.79)
18
(20.22)
30
(37.97)
11
(28.21)
22
(13.10)
26
(29.21)
4
(5.06)
7
(17.95)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 74
(19.73)
138
(36.80)
104
(27.74)
59
(15.73)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
The respondents who are of the primary level are 74 (19.73 percent),
middle level 138 (36.80 percent), secondary level 104 (27.74 percent) and higher
studies level 59 (15.73 percent) in the total sample size. The majority of the
respondents have the educational level ranging from middle to secondary.
2.10.5 Occupation of the Respondents
Households are classified into agricultural labourers, agricultural
households, salaried employee households and business people depending upon
their main occupation.
83
Table: 2.25 – Occupation Level of the Respondents
(in Numbers)
Income
Groups
Agricultural
Labour
Agriculturist
Salaried
People
Business
People
Total
Low
Marginal
Medium
High
36
(21.43)
21
(23.60)
26
(32.91)
8
(20.51)
64
(38.10)
26
(29.21)
19
(24.05)
6
(15.38)
24
(14.29)
31
(34.83)
16
(20.25)
8
(20.51)
44
(26.19)
11
(12.36)
18
(22.78)
17
(43.59)
168
(100)
89
(100)
79
(100)
39
(100)
All
Groups
91
(24.27)
115
(30.67)
79
(21.07)
90
(24.00)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
According to Table 2.25, the respondents who come under agricultural
labourers are 91 (24.27 percent), agricultural households are 115 (30.67 percent),
salaried employee households 79 (21.07 percent) and business people 90
(24 percent) of the total sample size. The households with agriculture as their main
occupation are 115, out of which 64 are from low income group, 26 are from
marginal income group, 19 are from medium income group and the remaining six
are from high income groups as per the standard classification.
84
2.11 Housing Particulars of the Respondents
Particulars regarding family size, nature of house, nature of ownership of
house, whether electrified or not, and purposes of different fuels used are
discussed as follows:
2.11.1 Family Size of the Respondents
Family size is an important determinant of household energy consumption.
Table 2.26 explains the family size of the sample households.
Table: 2.26 – Family Size of the Respondents
(in Numbers)
Income
Groups
Less than 3
4 - 6
More than
6
Total
Low
Marginal
Medium
High
46
(27.38)
31
(34.83)
26
(32.91)
17
(43.59)
94
(55.95)
36
(40.45)
29
(36.71)
14
(35.90)
28
(16.67)
22
(24.72)
24
(30.78)
8
(20.51)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 120
(32.00)
173
(46.13)
82
(21.87)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
There are 120 respondents in the category of less than 3, 173 respondents
between 4 and 6 and 82 respondents more than 6 of the total households. Most of
the respondents i.e., 173 (46.13 percent) belong to the group of 4 – 6 persons.
85
2.11.2 Nature of House
The people in the study area are living in different types of houses like
concrete, tiled and thatched houses. As per Table 2.29, 132 (35.20 percent)
households live in concrete houses, 174 (46.40 percent) in tiled houses and 69
(18.40 percent) in thatched houses.
Table: 2.27 – Nature of House of the Respondents
(in Numbers)
Income
Groups
Concrete
Tiled
Thatched
Total
Low
Marginal
Medium
High
34
(20.24)
36
(40.45)
44
(55.70)
18
(46.15)
106
(63.10)
32
(35.96)
22
(27.85)
14
(35.90)
28
(16.67)
21
(23.60)
13
(16.46)
7
(17.95)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 132
(35.20)
174
(46.40)
69
(18.40)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
86
2.11.3 Ownership of House
The respondents reside either in their owned or rented houses. Table 2.28
shows that, 300 (80 percent) respondents have their own houses. Only 75 sample
households (20 percent) reside in rented houses. Out of the 75 rented houses,
24 are occupied by low income group, 16 by marginal income group, 27 by
medium income group and the remaining eight by high income group.
Table: 2.28 – Ownership of House
(in Numbers)
Income
Groups
Owned
Rented
Total
Low
Marginal
Medium
High
144
(85.71)
73
(82.02)
52
(65.82)
31
(79.49)
24
(14.29)
16
(17.98)
27
(34.18)
8
(20.51)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 300
(80.00)
75
(20.00)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
87
2.12 Electrification Particulars of the Respondents
Consumption of commercial energy in the household sector depends
mainly on electricity. As per Table 2.29, out of the total sample size, 319 houses
are electrified (85.07 percent) and 56 (14.93 percent) houses are not electrified.
Among the electrified houses, 135 come under the low-income group, 71 in the
marginal income group, 76 in the medium income group and 37 in the high-
income group. Non-electrified houses are very few in the medium income group.
Table: 2.29 – Electrification Particulars of the Respondents
(in Numbers)
Income
Groups
Electrified
Non-
electrified
Total
Low
Marginal
Medium
High
135
(80.36)
71
(79.78)
76
(93.83)
37
(100.00)
33
(19.64)
18
(20.22)
5
(6.17)
-
(0.00)
168
(100)
89
(100)
81
(100)
37
(100)
All Groups 319
(85.07)
56
(14.93)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
88
2.13 Monthly Income of the Respondents
The monthly income of the sample respondents is given in Table 2.30.
Table: 2.30 – Monthly Income of the Respondents
(in Numbers)
Income
Groups
Total
Percentage
Below Rs.2,000
Rs.2,000 – 4,000
Rs.4,000 – 6,000
Above Rs.6,000
168
89
79
39
44.80
23.73
21.07
10.40
All Groups 375
100.00
Source: Field Survey
Out of the total sample size, 168 respondents (44.80 percent) come under
below Rs.2,000, 89 (23.73 percent) from Rs.2,000 to 4,000, 79 (21.07 percent)
from Rs.4,000 to 6,000 and the remaining 39 (10.40 percent) belong to Rs. 6,000
and above groups.
It is observed that 44.80 percent of the respondents are in the low income
groups, 23.73 percent of the respondents in the marginal income group,
21.07 percent of the respondents in the medium income group and the remaining
10.40 percent fall in the high income category of Rs.6,000 and above.
89
2.14 Purpose of Fuel Use
The purpose of use of different fuels like kerosene, petrol, diesel, L.P.Gas
and electricity are explained as follows:
2.14.1 Kerosene Use
The purpose of kerosene used by different income groups is explained in
Table 2.31.
Table: 2.31 – Purpose of Kerosene Use – Income Group - wise
(in Numbers)
Income
Groups
Not-
using
Lighting
Cooking
Both
Total
Low
Marginal
Medium
High
36
(21.43)
21
(23.60)
26
(32.91)
8
(20.51)
64
(38.10)
26
(29.21)
19
(24.05)
6
(15.38)
24
(14.29)
31
(34.83)
16
(20.25)
8
(20.51)
44
(26.19)
11
(12.36)
18
(22.78)
17
(43.59)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 91
(24.27)
115
(30.67)
79
(21.07)
90
(24.00)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
Out of the total sample size, the category not using kerosene is 91
(24.27 percent). Those who use it for lighting are 115 (30.67 percent), for cooking
79 (21.07 percent) and for both lighting and cooking 90 (24 percent). Under the
90
low-income group, 168 respondents use kerosene, out of which 64 use it for
lighting, 24 for cooking and the remaining for both cooking and lighting.
2.14.2 Petrol and Diesel Use
The purpose of petrol and diesel used by different income groups is
explained in Table 2.32.
Table: 2.32 – Purpose of Petrol and Diesel Use – Income Group - wise
(in Numbers)
Income
Groups
Not-using
Transport
Total
Low
Marginal
Medium
High
164
(97.62)
76
(85.39)
73
(92.41)
28
(71.79)
4
(2.38)
13
(14.61)
6
(7.59)
11
(28.21)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 341
(90.93)
34
(9.07)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
As per Table 2.32, out of the total sample size, 341 (90.93 percent)
respondents do not use petrol and diesel at all. Only 34 (9.07 percent) respondents
use them for transport purpose.
91
2.14.3 L.P. Gas Use
Table 2.33 reveals the details of the purpose of L.P. Gas use income group
wise.
Table: 2.33 – Purpose of L.P. Gas Use – Income Group - wise
(in Numbers)
Income
Groups
Not-using
Cooking
Total
Low
Marginal
Medium
High
152
(90.48)
55
(61.80)
62
(78.48)
15
(38.46)
16
(9.52)
34
(38.20)
17
(21.52)
24
(61.54)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 284
(75.73)
91
(24.27)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
In the total sample size, only 91 respondents (24.27 percent) use L.P. Gas
for cooking purpose, of which 16 are from the low-income group, 34 from the
marginal income group, 17 from the medium income group and 24 from the high-
income group. It is understood from Table 2.33 that only the higher income group
prefers L.P. Gas for cooking purposes.
92
2.14.4 Electricity Use
An over all estimate of the purpose of electricity use income group wise has
been analysed with the help of Table 2.34.
Table: 2.34 – Purpose of Electricity Use – Income Group - wise
(in Numbers)
Income
Groups
Not-using
Lighting
Total
Low
Marginal
Medium
High
10
(5.95)
4
(4.49)
2
(2.53)
-
158
(94.05)
85
(95.51)
77
(97.47)
39
(100.00)
168
(100)
89
(100)
79
(100)
39
(100)
All Groups 16
(4.27)
359
(95.73)
375
(100) Source: Field Survey
Note : Figures in parentheses show percentages to the row-wise total
Among the electricity using households of 359, 100 are from the low-
income group, four from the marginal income group and two from the medium
income group and they use electricity for lighting purpose. It is observed from
Table 2.34 that no respondents reported using electricity for cooking purpose.
93
2.15 Summary
Energy is an essential ingredient for human life on earth One of the
important requirements of energy for man is in the form of food. A brief
description of the profile of energy is discussed in this chapter. A brief description
of the profile of the study area namely Tiruchendur block in the Thoothukudi
district, is presented in this chapter.
The characteristic features of sample households are also discussed. The
areas of discussion include caste composition, sex-wise distribution, age group,
education, occupational classification, family size, housing particulars, purpose of
fuel use and electrification of the sample households in the study area. A total
sample size of 375 was randomly selected from the sample villages.
Photovoltaic comes from the words photo meaning “light” and volt, a measurement of electricity. Sometimes photovoltaic cells are called PV cells orsolar cells for short. These are the four steps that show how a PV cell is made and how it produces electrictySolar energy is radiant energy that is
produced by the sun. Every day the sun
radiates, or sends out, an enormous
amount of energy. The sun radiates more
energy in one second than people have
used since the beginning of time!
SOLAR AT A GLANCEWHAT IS SOLAR?
NUCLEAR FUSION
PHOTOVOLTAIC CELLS
A slab (or wafer) of pure silicon is used to make a PV cell. The top of the slab is very thinly di�used with an “n”
dopant such as phosphorous. On the base of the slab a small amount of a “p” dopant, typically boron, is di�used.
The boron side of the slab is 1,000 times thicker than the phosphorous side.
The phosphorous has one more electron in its outer shell than silicon, and the boron has one less. These dopants
help create the electric �eld that motivates the energetic electrons out of the cell created when light strikes the
PV cell. The phosphorous gives the wafer of silicon an excess of free electrons; it has a negative character. This is
called then-type silicon (n = negative). The n-type silicon is not charged—it has an equal number of protons
and electrons—but some of the electrons are not held tightly to the atoms. They are free to move to di�erent
locations within the layer. The boron gives the base of the silicon a positive character, because it has a tendency
to attract electrons. The base of the silicon is called p-type silicon (p = positive). The p-type silicon has an equal
number of protons and electrons; it has a positive character but not a positive charge.
Where the n-type silicon and p-type silicon meet, free electrons from the n-layer �ow into the p-layer for a split
second, then form a barrier to prevent more electrons from moving between the two sides. This point of contact
and barrier is called the p-n junction. When both sides of the silicon slab are doped, there is a negative charge
in the p-type section of the junction and a positive charge in the n-type section of the junction due to
movement of the electrons and “holes” at the junction of the two types of materials. This imbalance in electrical
charge at the p-n junction produces an electric �eld between the p-type and n-type silicon
If the PV cell is placed in the sun, photons of light strike the electrons in the p-n junction and energize them,
knocking them free of their atoms. These electrons are attracted to the positive charge in the n-type silicon
and repelled by the negative charge in the p-type silicon. Most photon-electron
collisions actually occur in the silicon base.
A conducting wire connects the p-type silicon to an electrical load, such as a light or battery, and then back to
the n-type silicon, forming a complete circuit. As the free electrons are pushed into the n-type silicon they repel
each other because they are of like charge. The wire provides a path for the electrons to move away from each
other. This �ow of electrons is an electric current that travels through the circuit from the n-type to the p-type
silicon. In addition to the semi-conducting materials, solar cells consist of a top metallic grid or other electrical
contact to collect electrons from the semi-conductor and transfer them to the external load, and a back contact
layer to complete the electrical circuit
TOP SOLAR STATES
The process of fusion most commonly involves hydrogen isotopes combining to
form a helium atom with a transformation of matter. This matter is emitted as
radiant energy.
HYDROGEN ISOTOPE
NEUTRONHELIUM
ENERGY
HYDROGEN ISOTOPE
N-TYPE SILICON
P-TYPE SILICON
NEGATIVE CHARACTER
POSITIVE CHARACTER
PROTON FREE ELECTRON TIGHTLY-HELD ELECTRON A LOCATION THAT CAN ACCEPT AN ELECTRON
Data: Energy Information Administration
POSITIVE CHARGE
N-TYPE
P-TYPEP-N JUNCTION
NEGATIVE CHARGE
POSITIVE CHARGE
N-TYPE
P-TYPEP-N JUNCTION
NEGATIVE CHARGE
FREE ELECTRON