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Avangrid's Hydropower Project Gets Final Maine Permit Despite Losing Referendum

Avangrid overcame legal and political challenges to secure permits for a 145-mile transmission line delivering up to 1,200 MW of Canadian hydropower to New England, officials said.

  • Avangrid Inc. secured its last state approval on Nov. 19, clearing the way for the New England Clean Energy Connect corridor to import 1,200 megawatts of Canadian hydropower to Massachusetts.
  • Maine voters' 2021 rejection set the stage for years of legal fights as opponents warned the 53-mile section would destroy woodlands; a 2023 jury ruling affirmed developers' constitutional right to proceed.
  • The 145-mile corridor stretches from Lewiston, Maine, to the Canadian border and follows mostly established utility corridors; final testing of the Central Maine Power corridor is on track for mid-December.
  • The company portrayed the permitting as a win for clean energy and the environment, but opponents said the long legal fight left lingering resentment toward Avangrid, which owns Central Maine Power.
  • Published Nov 24, 2025, the AP report noted local reporting from Portland, Maine, with Michael Casey, Associated Press writer, contributing to the coverage of the permit decision and project status.
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Avangrid's hydropower project gets final Maine permit despite losing referendum

The energy company Avangrid has received the final permit it needs from Maine to build a controversial hydropower transmission line to power hundreds of thousands of homes in Massachusetts.

·United States
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NBC Boston broke the news in Boston, United States on Monday, November 24, 2025.
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