Abstract: . . .  T E O F C ALIFO R N I A EN ERGY COMMISSION Page 2 C A L I F O R N I A E N E R G Y C O M M I S S I O N Kate Zocchetti, Project Manager Sanford Miller, Technical Advisor Charles Mizutani, Office Manager TECHNOLOGY EVALUATION OFFICE Nancy Deller, Deputy Director ENERGY TECHNOLOGY DEVELOPMENT DIVISION HANDBOOK P500-99-008 C O MMISSION Buying a PHOTOVOL T AIC SOLAR ELECTRIC SYSTEM: A CONSUMER GUIDE AUGUST 1999 C ALIF ORNIA ENER GY Gray D avis, Govern or S T A T E OF CAL IFORNIA ENERGY CO MM ISS IO N Page 3 Buying a Photovoltaic Solar Electric System: A Consumer Guide i Acknowledgements Buying a Photovoltaic . . .
. . .  of one ampere through a resistance of one ohm. Electrical systems of most homes and offices use 120 volts. (Volts = watts/amps) Watt (W) –Electric measurement of power at one point in time, as capacity or demand. For example, light bulbs are classified by wattage. (1000 watts = 1 kilowatt) Page 30 Buying a Photovoltaic Solar Electric System: A Consumer Guide 25 Endnotes 1. PV systems do not necessarily have to use an inverter in order to produce usable power. For example, many “off-grid” systems use DC power to operate lights and motors. On-grid systems can also use DC power but the DC circuits . . .
. . .  ampere through a resistance of one ohm. Electrical systems of most homes and offices use 120 volts. (Volts = watts/amps) Watt (W) –Electric measurement of power at one point in time, as capacity or demand. For example, light bulbs are classified by wattage. (1000 watts = 1 kilowatt) Page 30 Buying a Photovoltaic Solar Electric System: A Consumer Guide 25 Endnotes 1. PV systems do not necessarily have to use an inverter in order to produce usable power. For example, many “off-grid” systems use DC power to operate lights and motors. On-grid systems can also use DC power but the DC circuits in the . . .
. . .  a resistance of one ohm. Electrical systems of most homes and offices use 120 volts. (Volts = watts/amps) Watt (W) –Electric measurement of power at one point in time, as capacity or demand. For example, light bulbs are classified by wattage. (1000 watts = 1 kilowatt) Page 30 Buying a Photovoltaic Solar Electric System: A Consumer Guide 25 Endnotes 1. PV systems do not necessarily have to use an inverter in order to produce usable power. For example, many “off-grid” systems use DC power to operate lights and motors. On-grid systems can also use DC power but the DC circuits in the home must then . . .
. . .  1. PV systems do not necessarily have to use an inverter in order to produce usable power. For example, many “off-grid” systems use DC power to operate lights and motors. On-grid systems can also use DC power but the DC circuits in the home must then be separately connected to the rest of the home’s electric system through the use of a charge controller. 2. For systems larger than 10 kW, you have 18 months to buy and install the system. As of March 1999, rebates available for systems greater than 10kW are $2.50/watt, or 40 percent of the total eligible system cost, whichever is less. 3. Assumes . . .
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