US renewable energy firm Gravity Renewables has announced it has acquired the Dog River hydroelectric facility, also known as Nantanna Mill hydro, in Northfield, Vermont – the second hydro acquisition for the company in the US state.

The plant, originally commissioned in 1983, generates approximately 650,000kWh each year, enough to power nearly 100 average Vermont homes.

"After a 31 year association with Nantanna Hydro – rehabilitating, operating or owning it – we are pleased to hand the keys over to Gravity Renewables," said Jay Boeri, the project’s previous owner. Boeri will remain on as a consultant to the project.

"Powered by the topography of the Green Mountains, Dog River Hydro is an important part of the central Vermont’s renewable energy mix," added Ted Rose, Gravity Renewables’ Chief Executive Officer. "We are grateful to Jay for putting his faith in our team."

Dog River becomes Gravity’s second Vermont hydro facility, joining Comtu Falls in Springfield.