1000 वाट =1 किलोवाट 1 किलोवाट के लिए 10 वर्ग मीटर जगह की आवश्यकता होती है।1 किलोवाट का खर्चा भारत सरकार ने रू 1.90 लाख निर्धारित किया हैं , जिसमे सोलर पैनल , बैटरी , इन्वेर्टर अदि शामिल हैं और भारत सरकार इसमें 15 % सब्सिडी देती है। हमारे सोलर पैनल WAREE जैसे बहुत अच्छी कंपनियों के है जो भारत सरकार , MNRE से अधिकृत हैं और 25 साल की 80% परफॉरमेंस वारंटी दी जाती है। सोलर पैनल का रेट प्रति वाट रू 55/- से 59/- रहेगा। DPG Sansthan : A channel partner of MNRE, GoI Solar Photovoltaic Technology Basics Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process of converting light (photons) to electricity (voltage), which is called thePV effect. The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual solar PV systems. Utility companies are also using PV technology for large power stations. Solar panels used to power homes and businesses are typically made from solar cells combined into modules that hold about 40 cells. A typical home will use about 10 to 20 solar panels to power the home. The panels are mounted at a fixed angle facing south, or they can be mounted on a tracking device that follows the sun, allowing them to capture the most sunlight. Many solar panels combined together to create one system is called a solar array. For large electric utility or industrial applications, hundreds of solar arrays are interconnected to form a large utility-scale PV system.Traditional solar cells are made from silicon, are usually flat-plate, and generally are the most efficient. Second-generation solar cells are called thin-film solar cells because they are made from amorphous silicon or nonsilicon materials such as cadmium telluride. Thin film solar cells use layers of semiconductor materials only a few micrometers thick. Because of their flexibility, thin film solar cells can double as rooftop shingles and tiles, building facades, or the glazing for skylights.Third-generation solar cells are being made from a variety of new materials besides silicon, including solar inks using conventional printing press technologies, solar dyes, and conductive plastics. Some new solar cells use plastic lenses or mirrors to concentrate sunlight onto a very small piece of high efficiency PV material. The PV material is more expensive, but because so little is needed, these systems are becoming cost effective for use by utilities and industry. However, because the lenses must be pointed at the sun, the use of concentrating collectors is limited to the sunniest parts of the country.
Solar PV installations may be 2 types – On grid or Off grid
On grid may be with net metering or without netmetring , although in India , there is legislation for net metering but net metering is in nascent stage .
In general On grid are of bigger capacity i.e in MW capacity .
While off grid PV system are with batter back up and in general , roof top installations are off grid.