India 's ministry of science and technology has invested INR27 m ( $ 374,142 ) in the development of an integrated machine capable of storing solar electricity in water for 24 hours . The prototype , developed by NB Institute for Rural Technology 's ( NBIRT ) To generate power, a micro-hydel equipment will be switched on and that will bring the high-pressured, stored solar-powered water into the main machine, which will turn it into electricity,” he said. renewable energy school , has been created for a mass solar - hydroelectric project in the state of Assam . The cost of storing solar power in water is around one - fifth of storage in electricity , says state chief Gon Chaudhuri .
India 's ministry of science and technology has invested INR27 m ( $ 374,142 ) in the development of an integrated machine capable of storing solar electricity in water for 24 hours . The prototype , developed by NB Institute for Rural Technology 's ( NBIRT ) renewable energy school , has been created for a mass solar - hydroelectric project in the state of Assam . The cost of storing solar power in water is around one - fifth of storage in electricity , says state chief Gon Chaudhuri .