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November 23, 2021

Martha’s Vineyard Offshore Wind Alliance, US

By Carmen

Martha’s Vineyard Offshore Wind Alliance is a 1,600MW offshore wind power project. It is planned in Atlantic Ocean, Massachusetts, the US. The project is currently in financing stage. It will be developed in multiple phases. The project construction is likely to commence in 2022 and is expected to enter into commercial operation in 2023.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Offshore 1,600 1,600 Financed Massachusetts, the US Vineyard Power; Vineyard Wind


The project is being developed by Vineyard Power and Vineyard Wind. Avangrid Renewables and Copenhagen Infrastructure Partners KS are currently owning the project.

The project is expected to supply enough clean energy to power 750,000 households, to offset 1,600,000t of carbon dioxide emissions (CO2) a year. The project will be spread over an area of 675.28km².

Development Status

The project construction is expected to commence from 2022. Subsequent to that it will enter into commercial operation by 2023.

Power Purchase Agreement

Eversource Energy, National Grid USA Service and Unitil are expected to be the power offtakers from the project.

Contractors Involved

Martha’s Vineyard Offshore Wind Alliance (Vineyard Wind I) will be equipped with GE Renewable Energy Haliade-X 13 MW turbines.

Martha’s Vineyard Offshore Wind Alliance (Vineyard Wind II) will be equipped with GE Renewable Energy Haliade-X 13 MW turbines.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.

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