How much energy will a photovoltaic cell produce and how long will it last?

Designing a PV System involves the following steps:

žSOLAR PV SYSTEM WORKS ON THE PRICIPLE OF PHOTO ELECTRIC EFFECT

žCONVERTS SOLAR ENERGY TO DC VOLATGE

žWHICH CAN BE CONVERTED TO AC WITH THE HELP OF INVERTERS.

žBATTERIES CAN BE CHOSEN TO PROVIDE THE REQUIRED ROUD THE CLOCK POWER

žSITE ANALYSIS

žTHE SITE SHOULD BE ABLE TO ACCOMMODATE THE PV ARRAY SO THAT IT OPERATES ON ITS RATED EFFICIENCY

žIF THE SITE CONDITIONS LIMIT THE ELECTRICITY PRODUCTION THEN SOLAR SYSTEM CAN NOT BE USED FOR POWER GENERATION

žEXPOSURE TO SUN

žSUN LIGHT IS REQUIRED WITH LITTLE SHADING & OBSTRUCTION

žPANEL HAS TO BE PLACED IN SUCH A WAY THAT IT COLLECTS AS MUCH SUN AS POSSIBLE WHILE THE SUN MOVES FROM EAST TO WEST žSHADING

žSOLAR PATHFINDER IS SOMETIMES USED BY PROFESSIONALS TO DETREMINE THE POSITION OF THE SUN DURING THE YEAR TO FIND ANY SHADING THAT WILL OBSTRUCT THE SUNLIGHT

žDESIGNING A SOLAR PV SYSTEM

žASSUME 4.5 HOURS OF SUN AVAILABILITY

ž1 KW SOLAR PV SYSTEM GENERATES 4.5 KWH DC ENERGY PER DAY

žAND 135 KWH IN A 30 DAY MONTH žENERGY PRODUCED IS IN DC

žWHILE CONVERSION TO AC THE OUTPUT IS LOST BY 20 – 25% DEPENDING ON THE INVERTER EFFICIENCY AND THE SYSTEM DESIGN

žANGLE OR SLOPE FOR SOLAR PANEL

žIN A PLACE WHERE SUN ANGLE IS 20 DEGREES IN THE WINTER AND 45 DEGREES IN THE SUMMER žTHE INCLINATION THE PANEL SHOUL BE 30 DEGREES SOUTH FACING.

I have just given an outline...in case you need explaination, I can elaborate.

Cheers

Dupesh Saini/dupesh.saini@gmail.com/9833919279

Dear friend, based on experience, I think a 1-kWp photovoltaic cell produces between 800 and 1,050 kWh of electricity, depending on the region you live in, the alignment of the modules, the weather conditions and the system technology. In good years and in optimal locations, it is possible to produce more than 1,050 kWh.

Since solar systems have no moving parts, they are very reliable and require little maintenance. Depending on the quality, the photovoltaic cell can last up to 30 years. PV modules typically don't “die” when they get old; rather their output begins to diminish.