NVSI PVT LTD is a well-known company that uses renewable energy sources exclusively. It produces solar products like power packs, fans, chargers and lamps to replace kerosene; roof-top solar power generators; and solar-powered radars for meteorological and aviation use. NVIS also makes robots for artificial intelligence and prepares all its products for both commercial and domestic use, though they are costly, they are lifetime investments that emit less carbon dioxide and are eco-friendly. NVIS products provide simple and best replacements for non-renewable energy sources.