These systems generate electricity through solar energy and are appropriate for running electrical and electronic appliances in remote areas where there are no other means of electricity. Solar Modules (panels), during the daytime, convert light into electrical energy (by a photovoltaic effect) which is stored in battery banks through charge/ load controllers. This stored energy can be used for running lamps and other electrical appliances. The charge/ load controller protects the battery from being deeply discharged as well as overcharged from the solar module. Solar Home Lighting Systems (SHS) of various capacities, which are currently being subsidized by the Government for rural households, also fall in this category. A standard Suryodaya Urja SHS for village electrification consists of a 40Wp PV module, a 75 Ah deep cycle battery, a charge/ load controller, 4 lamp sets, power points for a radio, or a small B/ W TV set, and all necessary installation materials.
We have also designed low-cost Solar Home Systems of 20-22 Wp capacities for people with lower income range. This system enables a household to use three low watt fluorescent lamps for 4 hours a day or 2 lamps and a B/ W TV for approximately 2 hours.
Depending on the requirement, the size of the standalone solar PV system can be of larger capacity e. g. 60+ Wp, 80+ Wp, or in the range of a Kilowatt. Suryodaya Urja also designs, manufactures, and implements large stand-alone systems to run office complexes, hotels, and lodges on a turnkey basis. Portable or semi-portable systems to run laptops, slide projectors, TV/ VCRs, communication equipment can also be custom manufactured as per specific requirements.