Solar PV panels convert the sunlight directly into DC electricity. The panels are rated according to their peak wattage. Note that a 200 watt peak solar panel will produce 200 watt power when kept in sun but the power generated throughout the day will fluctuate depending on the time of day and angle of panel with the sun. Three types of panels are available in the market, Mono-crystalline, Poly-crystalline and thin film type in decreasing order of efficiency. Higher efficiency modules require lesser space for installation. Various Indian and foreign panels manufactures are present in the market providing panels with different peak wattages. The best available panels have efficiency around 17 – 22%.
What are solar photo-voltaic panels?Rohit Arora