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| Nantucket Sound wind proposals | |
|---|---|
| Name | Nantucket Sound wind proposals |
| Location | Nantucket Sound |
| Status | Proposed/Contested |
| Developers | Nantucket Offshore Wind Project; Cape Wind Associates; Energy Management, Inc.; Ørsted (company); EDF Renewables; Deepwater Wind |
| Technologies | Offshore wind power; Monopile foundations; Gravity-based structures; Floating wind turbines |
| Electrical capacity | Varied proposals (tens to hundreds of megawatts) |
| First proposed | 2001 (Cape Wind) |
| Opponents | Alliance to Protect Nantucket Sound; Rocky Marciano; Kenneth C. Frazier |
| Proponents | Massachusetts Clean Energy Coalition; Massachusetts Department of Energy Resources; Energy Secretary Ernest Moniz |
Nantucket Sound wind proposals Nantucket Sound wind proposals refer to a series of offshore wind energy projects proposed in Nantucket Sound off the coast of Cape Cod, Massachusetts Bay, and nearby islands such as Nantucket and Martha's Vineyard. The proposals have involved public agencies, private developers, conservation groups, fisheries organizations, and legal actors in a multifaceted debate spanning environmental science, energy policy, coastal management, and property rights. Key proposals have included the high-profile Cape Wind plan and subsequent projects that sought to balance renewable energy development with maritime navigation, fisheries, and cultural landscape preservation.
Nantucket Sound lies between Cape Cod and the islands of Martha's Vineyard and Nantucket, adjacent to Vineyard Sound, Buzzards Bay, and the broader Atlantic Ocean. The Sound's bathymetry, sediment composition, and prevailing wind regimes attracted interest from developers after studies by National Renewable Energy Laboratory and U.S. Department of Energy showed offshore wind potential. The region contains federally regulated areas such as the Monomoy National Wildlife Refuge and is proximate to Cape Cod National Seashore, making siting an engineering and regulatory challenge involving agencies like the Bureau of Ocean Energy Management and the National Oceanic and Atmospheric Administration.
Early exploratory work culminated in the 2001 filing by Cape Wind Associates, led by J. Drake Hamilton and investors including Ira Magaziner, spawning advocacy from groups such as the Alliance to Protect Nantucket Sound and support from environmental organizations including Sierra Club (United States). Later entrants and partners included Nabholz Construction Corporation, Shell Oil Company, National Grid (United Kingdom), and regional utilities such as National Grid plc and NSTAR Electric (Eversource Energy). Stakeholders also encompassed commercial fishing organizations including the Massachusetts Fishermen's Partnership, municipalities like the Town of Nantucket, state agencies including the Massachusetts Department of Public Utilities, and federal entities like the U.S. Coast Guard.
The original Cape Wind plan proposed up to 130 Siemens Gamesa Renewable Energy-class turbines (then under different manufacturers), mounted on monopile or gravity-based structure foundations, connected by high-voltage submarine cables to the mainland grid at transmission points near Barnstable, Massachusetts and Bourne, Massachusetts. Subsequent schemes by developers such as Deepwater Wind and Ørsted explored alternatives including fewer larger turbines, offshore substations, and use of HVAC and HVDC transmission technologies studied by General Electric engineers and consultants from Black & Veatch. Proposed capacities ranged from tens to several hundred megawatts, with planned seabed surveys by firms like ERM (company) and deployment timelines coordinated with the Massachusetts Clean Energy Standard.
Environmental assessments commissioned by proponents and regulators examined potential impacts on species protected under the Endangered Species Act and managed by U.S. Fish and Wildlife Service, including seabirds like the Piping Plover and marine mammals such as North Atlantic right whale and Harbor seal. Studies referenced methodologies from Marine Ecology Progress Series and assessments by Massachusetts Audubon Society and The Nature Conservancy. Concerns included collision risk, habitat displacement affecting fisheries represented by the Northeast Seafood Coalition, construction noise impacts modeled after studies from Woods Hole Oceanographic Institution, and changes to sediment transport near Monomoy Island and Great Point (Nantucket).
Permitting engaged multiple statutes and agencies, including lease authority under the Outer Continental Shelf Lands Act administered by the Bureau of Ocean Energy Management, state permitting through the Massachusetts Department of Environmental Protection, and navigational safety oversight by the U.S. Coast Guard. Legal disputes invoked doctrines litigated in courts such as the United States Court of Appeals for the First Circuit and interventions by parties represented by law firms like Ropes & Gray. Contested permits involved reviews under the National Environmental Policy Act and consultations under the Marine Mammal Protection Act and the Magnuson–Stevens Fishery Conservation and Management Act.
Economic analyses cited impacts on regional tourism economies in Provincetown, Massachusetts, property assessments in Hyannis, Massachusetts, fishing industry revenue documented by Massachusetts Division of Marine Fisheries, and job projections by Massachusetts Clean Energy Center. Power purchase agreements with utilities such as National Grid (United Kingdom) and Massachusetts Electric Company (NStar) factored into ratepayer impacts reviewed by the Massachusetts Department of Public Utilities. Local governments including the Barnstable County and community organizations like the Town of Edgartown debated economic trade-offs between renewable energy benefits and effects on harbor-dependent businesses represented by the New Bedford Fishing Heritage Center.
Opposition coalesced around groups including the Alliance to Protect Nantucket Sound, influential donors like William Koch and legal advocates associated with The Brattle Group analyses. High-profile opponents included elected officials from Barnstable County and residents of Chatham, Massachusetts and Orleans, Massachusetts; prominent supporters included figures from Massachusetts Institute of Technology and former officials such as Ernest Moniz. Litigation produced decisions by the Supreme Judicial Court of Massachusetts and appeals to federal courts, while protest actions involved public hearings at venues like the John F. Kennedy Presidential Library and community rallies organized by groups such as Cape Cod Times editorial coalitions.
After prolonged litigation and shifting market dynamics, earlier proposals like Cape Wind were effectively shelved, but renewed interest by offshore developers including Ørsted (company) and EDF Renewables and federal leasing programs by the Bureau of Ocean Energy Management have kept Nantucket Sound and adjacent waters under consideration for offshore wind as part of regional plans under the New England Clean Energy Connect and state decarbonization targets by the Baker administration. Future prospects depend on continued consultation with stakeholders such as the Commercial Fishermen of America, advances in floating wind technology by firms like Principle Power and Equinor, grid upgrades coordinated with ISO New England, and evolving jurisprudence from federal and state courts.
Category:Offshore wind farms in the United States