Solar panels do produce electricity in cloudy weather. They don’t produce as much electricity as they do on sunny days, but they have been shown to produce 25% of what they produce on a sunny day, or 10% when it’s very cloudy.

Daily Electricity generated by a solar system in KWh (unit of electricity) is usually 4.1 times of its size in KW as an average of the whole year. If the system size is 10 KW then 10 x 4.1 x 365 = 14,965 units of electricity will be generated annually. (Note: There are so many factors which may result in compromised electricity generation and the multiplying factor be reduced from 4.1 to 3.8 or even lesser. These factors are tilt, azimuth, dust deposition on panels, and the duration of electricity failure)

Just like the wind screen of a car, simple cleaning/washing with water, shampoo, and wiper is required. It is highly recommended to dry clean or wash the panels before sunrise or after sunset.

Space requirements range from 110 to 115 sq. feet per KW of solar PV installed depending whether it’s a rooftop or ground mounted and the tilt angle of the solar PV modules.

Net metering allows customers to generate their own electricity in order to offset their electricity usage. Currently, Net Metering is available to consumers with rooftop solar PV generators.

The roof top solar PV system generates electricity during the day time. At times the generation from this system is more than what is required by the consumer. Without net metering, this excess generation goes to the grid unaccounted for and there is no benefit to the consumer. Electric utility installs a bidirectional meter at the consumer’s premise which is capable of recording this excess generation and gives credit to the consumer in the monthly bill. Each unit exported to the grid by the consumer is netted off against the units imported by the consumer.