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The dispute is over a 145-mile transmission line, which would cost nearly $1 billion and is being financed by Massachusetts electric ratepayers, which would eventually bring hydropower from Canada to Massachusetts.

The two energy companies, NextEra Energy and Avangrid rival complaints are risking the state’s ability to comply with its new climate law signed by Gov. Charlie Baker in March.

NextEra, owner of Seabrook Nuclear Power Plant in New Hampshire and an oil-fired power plant in Yarmouth, Maine are concerned over the loss of revenue from the project.

In order for the New England Clean Energy Connect project to proceed, another energy company, Avangrid needs NextEra to upgrade a substation at the Seabrook plant to accommodate the new line in Maine.

[Douglas Hook]

More: Massachusetts’ climate goals at risk due to dispute between energy companies

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