The Northern Pass project would bring 1,200 megawatts of hydroelectricity from the Canadian border through a converter station in Franklin and on to Deerfield. From there, it would continue to the regional power grid for distribution all over New England.

The company estimates it will include 140 miles of high-voltage, direct-current power lines and an additional 40 miles of alternate current lines. The project's supporters say it's clean, renewable energy that will bring jobs and tax dollars to the state. Opponents worry about its effects on property values, tourism, wildlife habitats and the local small-scale renewable power industry.