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November 26, 2021

Block Islands Wind Farm, US

By Carmen

Block Islands Wind Farm is a 30MW offshore wind power project. The project is located in Atlantic Ocean, Rhode Island, the US. The project is currently active. It has been developed in multiple phases. The project construction commenced in 2015 and subsequently entered into commercial operation in December 2016.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Offshore 30 6 Active Rhode Island, the US Deepwater Wind Block Island


The project was developed by Deepwater Wind Block Island and is currently owned by Orsted US Offshore Wind with a stake of 100%.

The wind turbines in the project are installed on fixed foundations. An array of jacket foundations feature in the project.

The project generates 120,229MWh electricity and supplies enough clean energy to power 17,000 households, offsetting 121,000t of carbon dioxide emissions (CO2) a year. The project cost is $290m.

Development Status

The project is currently active. The project construction commenced in 2015 and subsequently entered into commercial operation in December 2016.

Power Purchase Agreement

The power generated from the project is sold to National Grid under a power purchase agreement for a period of 20 years, starting from 2016.

Contractors Involved

GE Renewable Energy was selected as the turbine supplier for the wind power project. The project consists of 5 units of Haliade 150-6MW turbines, each with 6MW nameplate capacity.

Alstom is the O&M contractor for the wind power project. The operation and maintenance contract commenced from 2016, for a period of 15 years.

The wind power project consists of Tubular Steel towers supplied by GE Renewable Energy. These towers are around 82.3m high.


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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