Block Island Wind Farm

Block Island Wind Farm
Name	Block Island Wind Farm
Location	Block Island, Rhode Island, United States
Coordinates	41°10′N 71°36′W
Status	Operational
Construction started	2015
Commissioned	2016
Owner	Deepwater Wind; later Equinor and Ørsted stake changes
Turbines	5 × 6 MW GE Wind Haliade-class
Capacity	30 MW
Website	Deepwater Wind (archived)

Block Island Wind Farm The Block Island Wind Farm is the first operational offshore wind facility in the United States. Located off Block Island in Narragansett Bay and the Atlantic Ocean, it consists of five offshore wind turbines linked to Rhode Island's electrical grid via submarine cable. The project established a regulatory, commercial, and technical precedent for subsequent U.S. offshore wind developments such as Vineyard Wind and Revolution Wind.

Overview

The project was developed by Deepwater Wind and sited about 3 nautical miles southeast of Block Island. It uses five turbines rated at 6 MW each from General Electric's offshore portfolio, with foundations embedded in seabed soils typical of the New England shelf. The farm connects to the mainland via a transmission cable landed at Portsmouth, Rhode Island and integrates into the regional grid operated by ISO New England. The facility's small scale contrasts with larger European projects like Hornsea Project and London Array but served as a demonstration for U.S. permitting pathways followed by South Fork Wind.

Planning and approval

Initial planning began when Deepwater Wind pursued lease and permit approvals from federal and state agencies including the Bureau of Ocean Energy Management and the Rhode Island Coastal Resources Management Council. The project navigated environmental review under the National Environmental Policy Act and endangered species consultations involving National Marine Fisheries Service and U.S. Fish and Wildlife Service. Stakeholders in the permitting process included the Town of New Shoreham, the Rhode Island Public Utilities Commission, local fishing organizations such as the Rhode Island Commercial Fishermen’s Association, and conservation groups like The Nature Conservancy. Legal and political challenges involved elected officials at the Governor of Rhode Island's office and congressional actors concerned with maritime uses and visual impacts.

Design and construction

Design decisions balanced turbine technology from General Electric with foundation and installation methods employed by contractors experienced on projects like Block Island Wind Farm-era European arrays. Foundations were monopiles engineered for glacial till and sand strata common off Rhode Island. Construction mobilized heavy-lift vessels and jackup rigs with procurement contracts awarded to suppliers from Denmark, United Kingdom, and the United States; companies involved included global marine contractors previously active on Beatrice Wind Farm and Thanet Wind Farm. Cable installation used specialized trenching techniques paralleling methods used at Ormonde Wind Farm to minimize exposure. Onshore work at Portsmouth, Rhode Island integrated with harbor facilities used by the Port of Providence regional logistics network.

Operations and performance

Commissioned in 2016, the farm achieved commercial operation and began supplying electricity under a power purchase agreement approved by the Rhode Island Public Utilities Commission. Performance metrics compare capacity factor and availability against colder-water European benchmarks such as Horns Rev and Walney Extension. Operations, maintenance, and remote monitoring draw on practices developed by operators of Greater Gabbard and Walney projects; spare parts logistics involve ports utilized by Block Island Ferry services and regional shipyards. The project has contributed to studies by National Renewable Energy Laboratory and Massachusetts Institute of Technology into offshore wind resource assessment, wake effects, and grid integration.

Environmental and community impact

Environmental assessments examined potential effects on marine mammals monitored under guidance from National Oceanic and Atmospheric Administration, fisheries addressed by the New England Fishery Management Council, and seabird migration evaluated alongside researchers from University of Rhode Island and Brown University. Construction instituted seasonal constraints to reduce impacts on species protected under the Endangered Species Act and state marine policies. Community responses mixed support from renewable energy advocates such as Sierra Club with concerns raised by local tourism stakeholders and the Block Island Chamber of Commerce about visual impacts seen from Mohegan Bluffs viewpoints. Monitoring programs coordinated with the Rhode Island Department of Environmental Management produced data on benthic habitat recovery and marine mammal sightings that informed subsequent federal guidance for Coastal zone management.

Economics and ownership

Financing combined private equity, project-level debt, and a long-term contract for differences structure approved by the Rhode Island Public Utilities Commission. Ownership evolved through acquisitions and strategic investments involving I Squared Capital and later partnerships with European offshore energy firms including Ørsted (company) and Equinor. The project's levelized cost and contract terms were compared in policy discussions with proponents of larger arrays like Vineyard Wind and federal incentives such as the Investment Tax Credit. Local economic impacts included job creation during construction, port investment at Port of Providence, and workforce training linked to programs at Rhode Island College and University of Rhode Island.

Future developments and legacy

As a first-of-its-kind U.S. offshore wind project, the facility influenced federal leasing strategy at the Bureau of Ocean Energy Management and regulatory frameworks used for projects such as Revolution Wind, Vineyard Wind, and South Fork Wind. Legacy outcomes include site-specific monitoring datasets cited by National Oceanic and Atmospheric Administration and guidance adopted by the National Renewable Energy Laboratory for turbine siting and cable routing. The project also helped catalyze supply chain investments in New England ports and laid groundwork for workforce initiatives in collaboration with institutions like Rhode Island Department of Labor and Training. The farm remains a reference point in debates about coastal planning, renewable energy policy, and regional decarbonization pathways pursued by Rhode Island and neighboring states.

Category:Offshore wind farms in the United States Category:Energy infrastructure in Rhode Island