Clearway Energy, San Francisco, has been selected to develop an 800-megawatt (MW) wind farm in Maine, the largest in the state, according to an August 2026 press release from the Maine Public Utilities Commission (PUC). Clearway received an award for energy and renewable energy certificates.

This multistate project aims to efficiently integrate renewable resources from northern Maine into the broader regional electric grid. Maine electricity ratepayers will pay for the state’s share—Maine plans to buy 600 MW of wind power generated from the project—while the remaining 200 MW will be sent to other New England states, according to the press release.

The wind farm will grow Maine’s onshore wind capacity by about 66%, according to an article in Electrek. In October 2025, the state’s onshore wind-powered generating capacity reached 1,214 MW.

The project will be built on commercial timberland in Aroostook County. While Aroostook County is not currently connected to the regional ISO New England electric grid, Central Maine Power’s parent company Avangrid Networks was selected to develop a 1,200-MW high-voltage transmission line to carry the generated wind power to the regional grid. Avangrid plans to use existing transmission corridors and has already secured most of the rights-of-way.

The cost of the transmission line will be spread across five New England states—Connecticut, Maine, Massachusetts, Rhode Island and Vermont. Maine expects to pay for 11% of the transmission line costs, while the rest will be shared among the other states.

“This project has demonstrated that separate sovereign governments can work together to plan for and procure significant transmission and generation investments, and most surprisingly, to agree on how to share the costs and benefits of those investments,” said Patrick Scully, commissioner for the Maine PUC. “I’ve not seen anything like this in the U.S., and I think this effort deserves national attention and provides a model for other regions to work collaboratively to meet common energy, climate and reliability goals.”

Maine’s PUC said the wind farm will produce more than $2.4 billion in total economic output. The generation and transmission projects are expected to create more than 2,500 construction jobs over four years, generate about $150 million in new state and municipal tax revenue and deliver $387–$425 million in net benefits to electricity customers in Maine, according to the press release.

There are still several hurdles before the wind farm is finalized. Maine’s PUC and Clearway will need to negotiate and approve a power purchase agreement for the state’s 600-MW portion of the output, the press release said. And the plan for the wind-power generated electricity transmission will need to be approved by the project’s participating states and Avangrid as well as the Federal Energy Regulatory Commission (FERC). The Maine PUC recommended the New England States Committee on Electricity collaborate with the participating states and Avangrid to finalize a voluntary agreement and then submit it to FERC.