KOLKATA: West Bengals’ power distribution company has roped in Japan International Cooperation Agency for a Rs 5,000 crore loan that would part finance its proposed 1000 mw Turga pumped storage project.A loan agreement with the Japanese bank was executed recently and the total project cost has been estimated at Rs 6922 crore. It will come up in the state’s Purulia district at Ayodhya hills. Four reversible pump-turbine units of 250 mw each would be set up which has already been approved by the state cabinet.It could be used to store solar power during the day which can be pushed into the grid during night thus acting as power storage like batteries.Pumped storages stores electricity in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation one. Power is used to run pumps which send water from a lower reservoir to an upper reservoir. During periods of high electrical demand or during night when power is necessary, the stored water is released through turbines to produce electricity. It can also be usedEarlier the state was looking at the possibility of setting up 1,200 mw of solar power units that could be used to power the 1000 mw pumped power storage plant. However, setting up solar generation facility is likely to cost another Rs 5000 crore. The centre was earlier looking at financing part of the project with centre’s assistance.