Assam 's ministry of science and technology has invested INR27m ($ 374,142 ) in the development of an integrated machine capable of storing solar electricity in water for 24 hours . The prototype, developed by ministry of science and technology ( 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 about 1/5th of storage in batteries, said ministry of science and technology chief Gon Chaudhuri .
India's ministry of science and technology has invested INR27m ($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 batteries, said NBIRT chief Gon Chaudhuri.