Three windmills, along with solar panels, installed on the roof of Yash Enclave, a 16-storey building with 105 flats at Dombivili (West), Thane, Maharashtra have been powering the lifts and lights in the building, as also those of the adjoining 12-storey building for the past two years. There are 150 lights in common areas like lifts, lobbies, staircase, stilt parking and streets and two pumps of 10 hp and 7.5 hp. The Go Green Ventures’ alternate energy system is automatic and does not require any manual intervention.