The U.S. Department of Energy is recommending approval of a key permit in the Northern Pass power project.
The department on Thursday released its final environmental impact study of the project, which seeks to run a 192-mile transmission line from Pittsburg to Deerfield, carrying enough hydropower to southern New England markets to power about a million homes.
After issuing a draft report two years ago, the energy department re-evaluated the project after EverSource Energy changed its proposal to call for burying 60 miles of lines instead of eight. The new report concludes the project won't have a significant impact on the environment and proposes that the department issue one of three necessary federal permits; a formal permit hasn't been issued.
New Hampshire's Site Evaluation Committee will vote on the project later this year.