KOLKATA: The Centre is working on a West Bengal government proposal to generate green energy that will pump water to power a turbine later in the day, Power Minister Piyush Goyal said in Kolkata on Friday.Part of the funds for such projects will come from the Clean Energy Fund, he said, adding that the state government is also in talks with the Centre to join the Ujwal Discom Assurance Yojna or UDAY. Goyal, who was in the city to attend the Global Bengal Summit, told reporters that the state is close to attaining 100% electrification under ‘Sobar Ghore Alo Scheme’, with only 22 villages remaining to receive power supply.Later in the day, Chief Minister Mamata Banerjee urged Goyal to take over areas allegedly involved in illegal mining, which is a loss to the state exchequer. “We will work out something along with Coal India,” Goyal said.On the scheme for renewable and ‘pumped storage’, Goyal said: “West Bengal has been discussing with us for setting up pumped storage systems along with solar generation facilities and has been asking for our support from the Clean Energy Fund. We have liked the idea and are in the process of preparing a package that would be announced in the next few weeks.This will allow storage of solar power generated during the day that can be wheeled out during the night or at times when required and could be installed in all states.” A pumped storage facility consists of two large water tanks at two levels — one at the base of a hill and the other at the top of the hill. During the day, when solar power is generated, a portion of the power will be used to pump water from the lower tank to the higher one. At night, when solar power isn’t available, water from the elevated tank will be released to work a turbine and generate power.West Bengal has already installed a 1,000 MW pumped storage facility and has drawn up plans of setting up more such systems along with solar generation facilities at an estimated investment of about Rs 17,000 crore. On UDAY, Goyal said: “We have urged West Bengal to join UDAY and it would help the state reduce costs. Nationally, UDAY can save close to Rs 1.8 lakh crore and all of it would be passed on to consumers.”