Top 5 Biggest Offshore Wind Farms In U.S

Offshore wind farms are rapidly coming up on the U.S. coasts, with around two dozen projects, mostly located on the east coast due to strong winds, shallow waters and proximity to major population centres.

In 2021, the Biden administration announced a target of 30 GW of offshore wind by 2030. The sector is also garnering considerable attention and funding from investors and has generated thousands of jobs in the country.

Though development was mainly centred in the Atlantic Ocean, the federal government has initiated the processes to expand offshore wind to the Pacific Ocean and the Gulf of America, also, to make it a national industry.

Let us look at the 5 Biggest Offshore Wind Farms of the United States.

1. Coastal Virginia Offshore Wind Farm

This is the biggest offshore wind project under construction in the United States, led by Dominion Energy. It is located 27 miles off Virginia Beach, Virginia and will generate clean energy to power up to 660,000 homes.

It is 50% complete as of 2025 and is on track for full completion by the end of 2026. The farm will have a 2.6 GW (2,600 MW) capacity with 176 wind turbines.

The project is expected to create 2000 jobs during its construction and 1100 permanent jobs once it becomes operational, and generate two billion dollars in economic activity.

The total cost of the project has increased to $10.7 billion, due to higher network upgrade and interconnection costs.

The first of three offshore substations was installed in early 2025, and 16 transition pieces and 78 monopile foundations have been installed till now.

Electricity collected at three offshore substations will be transmitted to shore at Virginia Beach and routed to the regional grid.

2. Vineyard Wind 1

Vineyard Wind is presently constructing a utility-scale offshore wind energy project 15 miles off the coast of Massachusetts to produce clean and affordable energy, which would decrease carbon emissions by more than 1.6 million tons annually.

Vineyard 1 would comprise 62 wind turbines, placed a nautical mile apart. Every General Electric Haliade-X turbine can generate 13 megawatts of electricity, which is collected by an offshore substation before being transmitted to the shore.

The offshore wind farm would generate 800 megawatts of electricity to power 400,000 houses, equivalent to removing 325,000 vehicles from the roads.

Two submarine cables will run from the offshore substation to onshore at Covell’s Beach in Barnstable. The cables are buried up to 6 feet below the seafloor, and the onshore ones will be buried below the roads in Barnstable.

3. Revolution Wind

This offshore wind farm is under construction off the coasts of Rhode Island and Connecticut. It is the first multi-state offshore wind project in the US, which will provide clean energy to both states.

It is being developed by Orsted and Skyborn Renewables and will have a 704 MW capacity, 400 MW for Rhode Island and 304 MW for Connecticut.

The offshore wind farm will have 65 Siemens Gamesa 11.0-200 DD turbines, each rated at 11 MW.

Construction began in 2023, and it is estimated to power 350,000 homes. As of 2025, 52 turbine foundations and 9 turbines have been installed.

It is expected to be completed by 2026 as it suffered delays due to difficulties in installing an offshore substation monopile and other challenges.

4. South Fork Offshore Wind Farm

This is the United States’ first utility-scale offshore wind farm on the Outer Continental Shelf Offshore Rhode Island, 56 km east of Montauk Point, New York.

It can generate 132 megawatts of energy to power more than 70,000 homes. The 12-turbine wind farm will offset 300,000 tons of carbon emissions annually.

Each of the Siemens Gamesa wind turbines has a capacity of 11.0 MW and a diameter of 200 m.

The substation was built by Kiewit Offshore Services, Ltd, and the wind farm was constructed by Orsted along with Eversource.

The project spans 97,498 acres, and the farm links to the power grid via an underwater cable to East Hampton, New York.

Though the lease was approved in 2017, construction did not begin until 2022. Power from the first turbine was delivered to the grid in 2023, with the project completed in March 2024.

5. Block Island Wind Farm

This offshore wind farm lies 6.1 km from Block Island, Rhode Island, in the Atlantic Ocean. The project was developed by Deepwater Wind, now known as Ørsted US Offshore Wind.

In 2015, construction began, and the next year, 5 Alstom Haliade 150-6 MW turbines were installed.

In December 2016, operations began, with a capacity of 30 MW, and power was supplied to homes on the Rhode Island mainland and Block Island.

The project’s cost was 290 million dollars, and it led to the replacement of diesel power on Block Island and the delivery of clean and green energy to thousands of homes.

Power is sent to the grid through a 34 km submarine cable, which makes landfall at Narragansett, Rhode Island.

The turbines utilise pile-driven jacket foundations, which can withstand powerful storms.

You might also like to read-

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• 12 Biggest Offshore Wind Companies

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