economics of rooftop solar (23/03/15)

Cost Economics For Solar Rooftops

Anmol Singh Jaggi

[email protected] Ph:+91 93270 16962

Anatomy of Rooftop Solar PV System

1 3

4

5

6

2

1.  Solar Photovoltaic Modules

2.  Module Mounting Structures

3.  Inverters

4.  Cables

5.  Junction Boxes

6.  Protection & Peripherals

Contact: [email protected] | Ph:+91 93270 16962

A word of Caution

Solar Modules Inverters

Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +

Protection Services Margin

“ Q: What did it feel like sitting atop the rocket, ready to launch?

A: I felt about as good as anybody would, sitting in a capsule on top of

a rocket that were both built by the lowest bidders.

- Astronaut & Senator John Glenn

“ Contact: [email protected] | Ph:+91 93270 16962

Cost of Solar Plant


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


Typical 250 kW Solar Rooftop System costs Rs. 1.55 Cr.

In other words, Rs. 62 per Watt.

62 Rs. 1.55 Cr / 250 kW =

Rs per W


Exploring Cost Breakup: The Heart


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


36 Rs.

Function Sunlight falls on Solar Panels. Solar panels convert the sun’s energy into DC Electricity using Photovoltaic effect.

Buying Guidelines We recommend/use ploy-crystalline 60 cell modules with minimum efficiency of 15.5%

Makes Recommended


Exploring Cost Breakup: The Brain


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


9 Rs.

Function The Inverter converts the DC Current from the Solar Modules and converts it into the usable AC Current.

Buying Guidelines Multiple MPPT inverters are preferred Can overload the inverter upto 20% A large voltage range helps in accommodating variation in climatic conditions

Makes Recommended


Exploring Cost Breakup: The Legs


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


4 Rs.

Function Solar Modules are mounted on Structures which should be corrosion free and strong enough to cater to wind speeds.

Buying Guidelines Use only hot dip galvanized iron structures with a min galvanisation of thickness of

80 microns.

Structures are designed to withstand wind speeds of 150 km/hr or as per wind zone

Makes Recommended


Exploring Cost Breakup: The Body


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


4 Rs.

Function Civil - Erection of all Structures and Equipment using foundations / pedestals Electrical – Connecting all electrical parts together using time tested practices

Buying Guidelines M25 grade concrete should be used for pedestals to withstand pressure in long term

All electrical wirings should have proper dressing/saddles for long-term performance

Makes Recommended


Exploring Cost Breakup: The Arteries


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


2 Rs.

Function DC Cables connect the modules to inverters while AC Cables connect inverters to Junction Boxes and finally give current to power our buildings.

Buying Guidelines Cable sizes are chosen according to current carrying capacity, expected heat and

losses and long life (UV Protection)

Makes Recommended


Exploring Cost Breakup: The Joints


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


2 Rs.

Function Junction Box aggregates the current from various inverters Lightening Arrestors & Earthing Equipment is used for protection of plant MC4 connector are used to connect modules with inverters

Buying Guidelines Ratings of sub parts – fuses / busbar – etc are optimized according to design.

Earthing network is designed to keep resistance value less than 1 ohm

Makes Recommended

Junction Box: Hensel Earthing Material / Lightning Arrestor: SGI Engineers/Ashlok MC4: Multi-Contact/Bizlinks


Exploring Cost Breakup: The Health


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


Function Design, Engineering & Supervision

Buying Guidelines Expertise, Experience & Integrity

Makes Recommended

3 Rs.

“ Design is either good or bad. It is not Indian or German.


Exploring Cost Breakup: The Smile


Mounting Structures

Civil & Electrical

Works Cables

Junction Boxes +


3 Rs.

“ Businesses planned for service are apt to succeed,

while businesses that are planned for profit are apt to fail.


Project Economics: Simple Math!

Cost of Setting up a 250 kWp Solar Power Plant Rs. 155 Lacs Benefits due to Accelerated Depreciation 22-23% Generation from 250 kWp Solar Power Plant 4 Lac Units Tariff Rs. 6.5 /- Revenue Rs. 26 Lacs Expense Rs. 2 Lac Payback 4.65 years Contact: [email protected] | Ph:+91 93270 16962

Case Study: An Off-Grid Solar PV System

System capacity 8.5 kWp Type of system 25% fixed tilt rooftop system with conventional structures Client profile BSNL, Telecom Commissioning December 2014 Location Bihar

Plagued by excessive diesel usage, like any other telecom BTS site, BSNL has made a significant step forward in Renewable Energy Production by installing solar system over its various BTS sites in Bihar. Powered by Gensol’s robust design and engineering, this is one of the first systems that has been able to get the BSNL rid of excessive reliance on diesel as source of energy. This 8.5 kWp system is powering a load of 30 amperes throughout the day, with a very less dependence on diesel generators.


How is Gensol helping?

Cost of Construction Increasing Generation Customer Acquisition

Gensol boasts of being India’s

largest Solar Engineering

Advisory firm boasting of 1.3

GW of client base.

Gensol EPC has been able to

achieve the most competitive

prices in the industry because

of its engineering prowess.

Gensol has JV with Spain’s

Solarig with plants managed

across 6 countries for offering

truly world class Operation &

Maintenance services for Indian

Solar Power Plants.

India’s first solar marketplace

where you can order Solar

Energy Assessment Reports

and Solar Layouts online. Soon,

ezysolare will allow you to

upload roof data and order

installers and products online.


Engineering, Procurement & Construction

200 kW, IIT Kanpur, Uttar Pradesh

200 kW, VIT Andhra Pradesh 130 kW, NIMS Hospital, Kerala 100 kW, VVIT, Andhra Pradesh

100 kW, NCET Karnataka 5 kW, Raheja Residence, Delhi 1 kW, 70 systems, Kerala

About Gensol

Gensol Consultants, found in 2007 is India’s leading Advisory and System

Integrator for Solar PV Power Projects. Gensol is a channel partner to MNRE and

enjoys empanelment with most major Lending Institutions in India.

1,000+ MW 2,000+ kW

Gensol has an advisory portfolio of

more than 1 GW with every 5th MW in

India developed with our expertise.

Being an MNRE Channel partner,

Gensol has executed more than 2

MW of Solar Rooftop Projects across

India.

Gensol is based out of Ahmedabad in

Gujarat but has operational solar

projects across 16 Indian States.

With a 40+ Employee Strength –

Gensol prides itself on having the

best technical talent in industry.

AWARDS

BusinessWorld – India’s largest

weekly business magazine awarded

Gensol with “Hottest Young

Entrepreneur” in 2009.

Economic Times – India’s largest

financial daily awarded Gensol in its

“Power of Ideas” series in 2010.

Gensol was the only non-UK based

firm to be nominated for Global

Consultancy of the Year at

BusinessGreen Leader Awards,

London in 2014.


Gensol Engineering Pvt Ltd | Gensol Consultants Pvt Ltd

Corporate Office 108, Pinnacle Business Park Opp Royal Arcade, Prahladnagar Ahmedabad, Gujarat India - 380015

Email: [email protected] Website: www.gensol.in Phone: +91 79 40068235 Mob: +91 93270 16962 Fax: +91 79 40068239 Twitter: gensol_tweets

Gensol is one of the leading consultants and system integrators for Solar Power Plants. We boast of a portfolio of over

1000 MW of Solar Photovoltaic Plants. Gensol is also a channel partner to Ministry of New & Renewable Energy and

installs kW scale Solar Rooftop systems on a turnkey basis with more than 1 MW of cumulative installations across the

country.

The information contained herein is of a general nature and is not intended to address the circumstances of any particular

individual or entity. Although we endeavor to provide accurate and timely information, there can be no guarantee that such

information is accurate as of the date it is received or that it will continue to be accurate in the future. No one should act on

such information without appropriate professional advice after a thorough examination of the particular situation.

economics of rooftop solar (23/03/15)

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