phyics m4 electrical energy cost and conservation

OBJECTIVES

Electricity Costs

Why Is Energy Conservation Important?

Domestic Energy Conservation

Commercial Energy

Conservation

QUIZ

INTRODUCTION

ELECTRICAL ENERGY COST AND

CONSERVATION

PHYSICS MODULE 4 UNIT 3 LESSON 9

BEGIN

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Objectives

When you have completed this presentation, you should be able to:

1) Calculate electricity usage and cost2) Define energy conservation3) Identify energy conservation methods that can be used in

the home, school and corporate entities.

2

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Introduction3

It is hard to imagine every day life without electricity. Most of our electricity needs are satisfied by the burning of fossil fuels. Jamaica has no natural oil reserves and imports oil.

Oil accounts for 40% of Jamaica’s import bill. There are several entities that generate electricity but ONLY one entity is licensed for the transmission of electricity. This makes electricity very expensive.

Jamaica needs to implement measures to secure future national energy security. Energy conservation is one such measure which can engage every Jamaican, young and old!

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Electricity cost4

Electricity cost = unit cost × kilowatt-hoursTo encourage energy conservation, the unit cost of electricity

varies for different levels of consumption.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Electricity Cost5

In Jamaica , because oil is imported there are additional charges which makes electricity costs for residential and commercial customers very expensive. In 2008, PM Golding announced a 10% GCT charge on electricity consumption over 200 kWh to compel Jamaicans to reduce electricity consumption and save on the country’s import bill.

Click to see sample bill.Click to see sample bill.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Why is Energy Conservation important?

6

Energy conservation includes methods to save or prevent wastage of electrical energy. The Jamaican government has sought to find alternative methods of energy . The LNG (Liquid Natural Gas) project was proposed as a suitable alternative. Natural gas is a fossil fuel and fossil fuels when burnt produce carbon dioxide and carbon monoxide. These gases has contributed to global warming and increased our carbon footprint.

Any energy conservation method pursued should look to reduce our carbon footprint which will help to reduce electricity costs for cooling.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


7

Carbon footprint is a measure of carbon emissions released into the atmosphere as a result of human activities. Reducing our carbon footprint can be an energy conservation measure and help us use less energy to keep our selves cool.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


8

Wind mills are a feasible alternative for generating electricity and also reduce our carbon footprint. The Wigton windfarms in St. Elizabeth produces and supplies MW of electricity to the national grid.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


9

Solar panels can produce electricity directly from the Sun and help to reduce our carbon footprint.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


10

Solar street lights can help to reduce the government’s electricity costs. Government departments and institutions are responsible for 15 % of the country’s total electricity bill.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


11

Parish councils can reduce electricity costs for public spaces such as bus stops by using solar energy.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Energy conservation12

Solar panels produce electricity to heat water. Hospitals can utilise solar water heaters to supply hot water to launder bed linen and sterilse surgical utensils and work stations.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Energy conservation13

Solar panels can produce electricity for outdoor security lights. Crime affects all communities and much expense is incurred providing outdoor security lights at nights to protect life and property.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


14

In the future, houses can be constructed with roof tiles with solar panels so individual homes can help to reduce their carbon footprint and reduce their electricity costs.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Domestic Energy Conservation 15

Painting building white can help to reduce electricity usage for cooling.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Awnings reduce the amount of sun light entering the house, reducing the need for electricity for cooling.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


White venetian blinds reduce the amount of sunlight entering the house, reducing the electricity usage for cooling.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Anti reflective windows reduce the amount of sunlight entering the house instead of using blinds.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


White or light coloured roof tiles will help reduce the amount heat entering the house. White is a good reflector of heat radiation.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Covering the roof with white pebbles help greatly to keep houses cool. The white pebbles increase the surface area of the roof for reflecting heat radiation.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


At Christmas time, LED lights can be used decorative lightings as they consume less electricity.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


LED lights for Christmas decoration.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Houses are constructed with a special design making use of natural ventilation to keep them cool. Hot air rises and escape through windows or vents near to the ceiling.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Energy Conservation24

Many appliances although not in use consume electricity. Appliances such as televisions, stereo systems, computers and DVD players consume electricity when left plugged. Unplug all appliances after use.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Compact fluorescent bulbs ( CFL) consume less electricity and have a longer life than incandescent bulbs. The lifespan of a CFL is 10, 000 hours and will consume 140 kW of electricity during its lifespan.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Only use the washing machine when washing a large load. Front loaders consume less electricity and water than top loaders. Instead of using a dryer, hang clothes on the line outside to be dried by the sun.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Do all ironing in one session. Each time the iron is heated to iron a piece of clothing or linen, heat is wasted, as it uses a lot of electricity to be heated and it takes a long time to cool down.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Lights are turned on before nightfall to deter thieves when families are going to out after dark. Photosensitive switches can turn on outdoor security lights as soon as dusk fall saving electricity costs.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Use energy efficient appliances. Side by side refrigerators and refrigerators with the freezer at the base consume more electricity than the conventional refrigerators. Packed refrigerators will consume more electricity to cool it because the cold air is unable to circulate freely.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Commercial Energy Conservation30

Commercial entities use anti - reflective windows to reduce their electricity costs. Anti-reflective windows reduce the amount of sunlight entering the building and use less electricity for cooling.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


The new Courts superstore use solar LED lights in the parking lot to help reduce security electricity costs.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Large corporate buildings can use their rooftops to generate electricity to supply their needs or contribute to the national grid. Solar energy can power computers. A firm in Mandeville save on electricity costs by using solar energy for its computers.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Recent innovations include the development of transparent solar panels. Corporate entities can use natural light from windows instead overhead electrical lights. The windows serve as electricity generators!

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Solar windows. Some governments have mandated that the windows of state buildings be retrofitted with these panels to generate electricity and reduce demand for electricity from the national grid. These initiatives will save millions of dollars !

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Use of photo-sensitive switches to turn off security lights at daylight. Security lights consume electricity at large complexes such as schools and hospitals during the day.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


LED lighting is more expensive than fluorescent lamps, but it is more energy efficient and cost effective. LED lighting can last 60, 000 hours before need for replacement. A LED lamp will consume 340 kW of electricity during its lifespan. Jamaican government offices are currently being retrofitted with LED lamps to reduce electricity costs.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ37

Are you ready to test yourself? 1.There are eight multiple choice items that you are required to do. 2.For each item, click on the letter of the correct response and then click the button ‘NEXT QUESTION’ to continue.3.Click the BEGIN QUIZ button to do the quiz.

BEGIN QUIZ!BEGIN QUIZ!

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ: Question 138

Most of our electricity needs are supplied by …….

A. Wind A. Wind

B. Natural gas B. Natural gas

C. Nuclear C. Nuclear

D. Fossil fuelsD. Fossil fuels

FEEDBACKFEEDBACKFEEDBACKFEEDBACK

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Quiz: Feedback to Question 139

Most of our electricity needs are supplied by …….

NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION

A. No; wind supplies a small percentage of our electricity needs.

B. No. natural gas usage is very limited.C. No. Nuclear energy is not used in Jamaica.D. Yes. Electricity generation is produced by

burning coal and diesel.

A. Wind A. Wind

B. Natural gas B. Natural gas

C. Nuclear C. Nuclear

D. Fossil fuelsD. Fossil fuels

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ: Question 240

A hair dryer rated at 1800 W is used for 6 hours per day. What the electricity usage for a 30 day period?

A. 2.16 kWh A. 2.16 kWh

D. 216,000 W D. 216,000 W

C. 7.2 kWh C. 7.2 kWh

B. 216 kWhB. 216 kWh


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


A hair dryer rated at 1800 W is used for 6 hours per day. What the electricity usage for a 30 day period?


A. No. B. Yes. Electricity cost = 1800 W ×6 × 30 =

216000Wh = 216 kWhC. No. Electricity cost for 1 day = 1800 W

×6 = 7200 Wh = 7.2 kWhD. No. The unit is incorrect.

A. 2.16 kWh A. 2.16 kWh

D. 216,000 W D. 216,000 W

C. 7.2 kWh C. 7.2 kWh

B. 216 kWhB. 216 kWh

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ: Question 3

If the unit charge per kilowatt – hour is 25ȼ, what is the total electricity cost for the 30 day period for usage of the blow dryer?

42

A. $5400A. $5400

D. $1.80D. $1.80

B. $54000B. $54000

C. $54.00C. $54.00


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


If the unit charge per kilowatt – hour is 25ȼ, what is the total electricity cost for the 30 day period for usage of the blow dryer?

43


A. No. Electricity cost is 5400 cents; 216 × 25ȼ = 5400 ȼ

B. No.C. Yes. Electricity cost = 216 × $0.25 = $54.00 D. No. Electricity cost for a day = 7.2kWh × 25ȼ

= $1.80

A. $5400A. $5400

D. $1.80D. $1.80

B. $54000B. $54000

C. $54.00C. $54.00

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ: Question 4

Painting house white saves electricity because…

44

A. White is a good conductor of heat A. White is a good conductor of heat

D. White is a bad reflector of heat D. White is a bad reflector of heat

C. White is a good insulator C. White is a good insulator

B. White is a good reflector of heat B. White is a good reflector of heat


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Painting house white saves electricity because……. .

45


A. No. A conductor transmits heat easily.B. Yes. A reflector allows little or no heat

radiation to be taken in or given off.C. No. An absorber takes in heat radiation

easily.D. No. An insulator transmit little or no heat.

A. White is a good conductor of heat A. White is a good conductor of heat

D. White is a bad reflector of heat D. White is a bad reflector of heat

C. White is a good insulator C. White is a good insulator

B. White is a good reflector of heat B. White is a good reflector of heat

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Quiz: Question 5

Fluorescent lamps are better energy saving devices than incandescent bulbs because they …….

46

A. Consume less electricity and give a duller light.A. Consume less electricity and give a duller light.

D. Consume more electricity and have a longer life.D. Consume more electricity and have a longer life.

C. Consume more electricity and give a brighter light.C. Consume more electricity and give a brighter light.

B. Consume less electricity and give brighter light.B. Consume less electricity and give brighter light.


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Fluorescent lamps are better energy saving devices than incandescent bulbs because they …….

47


A. No. They consume less electricity but gives brighter light.

B. Yes.C. No. D. No. Fluorescent lamps last 10,000 hours

and consume less electricity.

A. Consume less electricity and give a duller light.A. Consume less electricity and give a duller light.

D. Consume more electricity and have a longer life.D. Consume more electricity and have a longer life.

C. Consume more electricity and give a brighter light.C. Consume more electricity and give a brighter light.

B. Consume less electricity and give brighter light.B. Consume less electricity and give brighter light.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ: Question 6

Solar panels convert solar energy directly into ……… ?

48

A. Chemical energy A. Chemical energy

B. Thermal energy B. Thermal energy

C. Light energy C. Light energy

D. Electrical energyD. Electrical energy


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


Solar panels convert solar energy directly into ……… ?

49


A. No. Solar panels do not store any form of energy.

B. No. Solar energy is transmitted as thermal energy.

C. No. Light energy is not created directly but by the flow of electricity in a circuit.

D. Yes. Solar energy causes a movement of electrons known as current.

A. Chemical energy A. Chemical energy

B. Thermal energy B. Thermal energy

C. Light energy C. Light energy

D. Electrical energyD. Electrical energy

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

Quiz: Question 7

A major energy cost saving measure used by NCB corporate offices is the use of ……...

50

A. Solar panels to power computers.A. Solar panels to power computers.

D. Nuclear reactors in the basement of the buildings. D. Nuclear reactors in the basement of the buildings.

C. Wind turbines on the top of its buildingsC. Wind turbines on the top of its buildings

B. Anti-reflective windows.B. Anti-reflective windows.


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


A major energy cost saving measure used by NCB corporate offices is the use of ……...

51


A. No. B. Yes. Anti-reflective windows reduce the

amount of heat radiation entering buildings through the windows.

C. No. There are no wind turbines on their buildings.

D. No. There are no nuclear reactors used for generating electricity.

A. Solar panels to power computers.A. Solar panels to power computers.

D. Nuclear reactors in the basement of the buildings. D. Nuclear reactors in the basement of the buildings.

C. Wind turbines on the top of its buildingsC. Wind turbines on the top of its buildings

B. Anti-reflective windows.B. Anti-reflective windows.

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

QUIZ: Question 8

A cost effective method of energy conservation that can be practised by adults and teenagers alike is …….

52

B. Hang clothes and linen outside instead of using a dryer.B. Hang clothes and linen outside instead of using a dryer.

D. Turn off the refrigerator and freezer at nights. D. Turn off the refrigerator and freezer at nights.

C. Iron damp clothing and linen. C. Iron damp clothing and linen.

A. Unplug all electronic appliances when not in use. A. Unplug all electronic appliances when not in use.


OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION


A cost effective method of energy conservation that can be practised by adults and teenagers alike is …….

53

A. Yes. Electronic appliances consume electricity when left plugged into sockets, although not actively in use.

B. No. Not all teenagers have washing chores and will hang clothes.

C. No. Ironing damp clothes will use more electricity than ironing dry clothes.

D. No. The refrigerator and freezer will consume more electricity to get it cool once more.

END OF QUIZ END OF QUIZ END OF QUIZ END OF QUIZ

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

End of Quiz

You have reached the end of the quiz. If you wish to review this lesson, go to the first slide. If you have finished viewing the lesson, click the Close (X)

button.

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

CARBON FOOTPRINT LOGOhttp://www.grassrootsaviationenvironmentalproducts.com/image/Reduce-your-carbo-footprints.jpgWIND TURBINEhttp://thumbs.dreamstime.com/thumb_166/1184883579pe8DcC.jpgCOMPACT FLUORESCENT LIGHThttp://t0.gstatic.com/images?q=tbn:ANd9GcQN_pJc4UyHh6pCx7K9MBPP-lNFp0PDZNduZrOh44YtibXGTzEVyQSOLAR PANELS ON HOUSEhttp://t3.gstatic.com/images?q=tbn:ANd9GcRpQUZZ4j9FpEW1p7IOx9ay94DHdA2xFuNjK5IEsrcp2x3lUGvu

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

SOLAR PANELS IN ROOF TILEShttp://www.piedmontcivic.org/wp-content/uploads/2011/10/Screen-shot-2011-10-17-at-2.27.03-AM.pngAWNINGShttp://www.aristocratawnings.com/blog/wp-content/uploads/2011/05/1-Window-Awnings-4.jpgOUTDOOR GARDEN SOLAR LIGHTShttp://blog.hayneedle.com/wp-content/gallery/120827_lightenup/thumbs/thumbs_2.jpgDOMESTIC ANTIREFLECTIVE WINDOWShttp://www.montrealgazette.com/6981856.bin

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

SOLAR STREET LIGHTShttp://www.kcpsolar.com/web_images/Solar%20CFL%20street%20light.jpgWINDOW BLINDShttp://t1.gstatic.com/images?q=tbn:ANd9GcRC68fmb8-8UFEqjLIRzwC1AlaFPECw9QieF3fKOEX9a01yZNjC7ASOLAR WATER HEATERhttp://t1.gstatic.com/images?q=tbn:ANd9GcQV6oG2eZNfH09ipcRhVkDZvCTNsNZP5G7hX7FJwSzQwYAkBoQSWHITE PAINTED BUILDING WITH WHITE ROOF TILEShttp://brookegiannetti.typepad.com/.a/6a00e554d7b8278833016762a4b1b8970b-800wi

57

OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

WHITE PEBBLES ON ROOF OF HOUSEhttp://t3.gstatic.com/images?q=tbn:ANd9GcSy571PCPUb8B79GqbIComdquMGmHBiQctRCpbRbsztfYGNXQvd9gJPS BILL

http://gojamaica.net/news/articleimages/2012/39224jpsbillsa20041202ws.jpg

FRONTLOADER WASHER AND DRYERhttp://img.ehowcdn.com/article-new/ehow/images/a07/r8/4v/balance-front-load-washing-machine-800x800.jpgIRONING LADYhttp://ak6.picdn.net/shutterstock/videos/843238/preview/stock-footage-young-woman-ironing-clothes.jpg

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

SOLAR PANELS ON ROOFShttp://syntoniccorp.com/news/wp-content/uploads/2010/11/solar_panels_for_commercial_use-3625-300x225.jpgPHOTOSENSITIVE SWITCHhttp://www.szshilong.com/Uploadimages/product/2010121721819947.jpgOUTDOOR LIGHTShttp://energy.gov/sites/prod/files/styles/large/public/photosensor_6929888.jpg

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

LED LAMPShttp://i00.i.aliimg.com/wsphoto/v0/579783880_1/Free-Shipping-8-LED-font-b-Light-b-font-Lamp-PIR-Auto-font-b-Sensor-b.jpg_250x250.jpgSOLAR LIGHTS ON BUS SHELTERhttp://www.kent.edu/about/administration/business/facilitiesplanning/universityarchitect/energy_conservation/images/SolarPoweredLED_BusShelterLighting.JPGWHITE BUILDINGShttp://static.ddmcdn.com/gif/storymaker-earth-environment-green-2010-1012284-515x261.jpg

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

CHRISTMAS LED LIGHTShttp://www.paperlost.com/wp-content/uploads/2012/12/Led-Christmas-Lights-1.jpgCHRISTMAS DECORATIONShttp://livinais.com/wp-content/uploads/2013/02/christmas-lights-beautiful-christmas-decorating-photos-and-design.jpgNCB TOWERShttp://t3.gstatic.com/images?q=tbn:ANd9GcSIY6OAC5Bl9a-

pexgjVbv3l3qYAjMo3YAmO5PJLajl4ohovL8BbAhttp://t3.gstatic.com/images?

q=tbn:ANd9GcQbG32hcLnCG4X82SeEozVmiwBeHgGDRKGouabuU1HtsfRIYjKUrw

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

NATURAL VENTILATIONhttp://www.examiner.com/images/blog/EXID44129/images/

Passive_Cooling(1).jpgUNPLUG APPLIANCEShttp://t3.gstatic.com/images?

q=tbn:ANd9GcQ5gQjVBGir94ceBjX5Bv2tn0P70BKTunqGLhdrcMY8Km0K8M7h

UNPLUG LOGOhttp://triaxisenergy.com/wp-content/uploads/2009/04/

unplug_symbol_lo1.jpgCOMPACT FLUORESCENT SAVINGShttp://www.freediyhomeimprovement.com/wp-content/

uploads/2011/09/use-less-electricity.jpg

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

ENERGY EFFICIENT APPLIANCEShttp://www.newgreenbasics.com/images-2010/

refrigerators.jpgUNPLUG SAVINGShttp://t3.gstatic.com/images?

q=tbn:ANd9GcTvWhpm7k7ou6lA8hFO-mBfB8m5G3Kol068yk-TmEzUKoJKYeFy

INVISBLE SOLAR PANELShttp://t3.gstatic.com/images?

q=tbn:ANd9GcTvWhpm7k7ou6lA8hFO-mBfB8m5G3Kol068yk-TmEzUKoJKYeFy

SOLAR WINDOWShttp://assets.inhabitat.com/wp-content/blogs.dir/1/files/

2011/03/Willis-Tower-Solar-Windows-5-537x402.jpg

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OBJECTIVES

Electricity Costs



Commercial Energy

Conservation

QUIZ

INTRODUCTION

CREDITS

SOLAR LED STREET LIGHTShttp://i00.i.aliimg.com/photo/v0/330450212/

CE_SONCAP_approved_12V_24V_50W_LED.jpg

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phyics m4 electrical energy cost and conservation

Education