The 30 megawatt (MW) Block Island Wind Farm opened off the coast of Rhode Island in 2016 as the first offshore wind farm in the United States
Offshore wind power is in the early stages of development in the United States. In 2016, the United States Department of Energy estimated that the country has a gross resource potential of 10,800GW of offshore wind capacity, with a "technical" resource potential of 2,058GW.[1] Offshore wind projects are under development in wind-rich areas of the East Coast, Great Lakes, and Pacific coast. The first commercial offshore wind farm, Block Island Wind Farm, began operation in 2016. As of 2017, about 30 projects totaling 24 gigawatts (GW) of potential installed capacity were being planned.[2]
In 2021 the Biden administration announced a target of 30 GW of offshore wind by 2030.[3] As of 2022, the US had 0.042 GW of offshore wind power,[4] in addition to which Vineyard Wind started coming online in stages on January 2, 2024.[5]
Wind energy lease areas off the southern coasts of Massachusetts and Rhode Island as of October, 2022
There is more than 16 GW of capacity planned for the Atlantic Coast. The map at right shows leases executed by the Bureau of Ocean Energy Management for the outer continental shelf off the Massachusetts and Rhode Island coasts, the first offshore wind energy area to be opened for auction, in 2014 (lease assignments as of 2022).[6]
Because of its shallow waters and average offshore wind speeds in excess of 9 m/s, the coast off Massachusetts has the greatest potential offshore wind production in the US, at more than 1 million GWh per year, followed by that of the Gulf Coast states.[7] In 2016, an update to Massachusetts energy law committed the state to purchasing 1,600 MW of offshore wind by 2027,[8] of which the first half was later awarded to Vineyard Wind (see project list below).[9] The shallow waters off the New England coast and proximity to load centers such as Boston, Providence, and Long Island make this area the most economical for both construction of wind farms and delivery of power to favorable nodes on the electric grid.
The state of New Jersey is aiming for 7,500 MW of offshore wind power capacity by 2035[10] and 11,000 MW by 2040.[11]New York has set of target of 2,400 megawatts (MW) of offshore wind by 2030. In February 2022, an auction for 6 lease areas in the New York Bight ended at $4.37 billion, with one area going for over one billion dollars. The combined areas could yield more than 5.6 gigawatts for an annual energy production of 19.6 TWh.[12][13][14]
The Energy Policy Act of 2005 provided for tax credits and other incentives for production of wind power.
The construction of an offshore wind farm involves a three-phase permitting process. First, the proponents must lease the seafloor from its owner – typically this will be Outer Continental Shelf, the federal seafloor which is leased by the Bureau of Ocean Energy Management (BOEM) under the Outer Continental Shelf Lands Act — but small wind projects can be constructed in state waters as well. The BOEM is the federal agency responsible for determining offshore areas where wind farms may be built in federal waters.[16] It sells leases to qualified bidders.[17] These leases may be awarded non-competitively, if only one proponent is interested in developing the area, or by auction. Once awarded, the lease areas can be further assigned and subdivided into separate projects.[citation needed]
Each project proponent, after winning an auction and making its initial lease payment, must file a Site Assessment Plan (SAP), which details the work required to evaluate the environmental conditions in the lease area, including both surface and seafloor conditions. After the SAP is approved, the proponent will install weather buoys and engage survey vessels to develop sufficiently detailed information to complete the design of the wind farm – this will include identifying protected species habitats, unexploded ordnance, shipwrecks, and geological formations that could interfere with either the foundations for wind turbines or the electrical cabling. After completing the survey, the proponent might choose to abandon the lease area if it appears development will be uneconomical, or else continue to final design and permitting, which culminates in the filing of a Construction and Operations Plan (COP).[citation needed]
In addition to the federal permitting process, all wind farms require state permits for their connections to the on-shore electric grid; even if an offshore project is constructed entirely in federal waters its "export cables" will need to transit state waters to reach the shore. Other permits may be required to connect to the grid, such as certificate of public necessity, as well as private consents from an integrated electric utility or a regional transmission organization.[citation needed]
Wind Energy Areas
In January 2012, a "Smart for the Start" regulatory approach was introduced, designed to expedite the siting process while incorporating strong environmental protections. Specifically, the Department of Interior approved "wind energy areas" off the coast where projects can move through the regulatory approval process more quickly.[18] The NOAA Coastal Services Center (CSC) has released a cadastre web tool to illustrate suitability of Eastern seaboard areas.[19]
The U.S. offshore wind industry is advancing with the Eco Edison, the first U.S.-built vessel for maintaining offshore wind farms, christened in New Orleans with bipartisan political support. Constructed by Orsted AS and Eversource Energy to service projects in the Northeast, the Eco Edison symbolizes a significant investment in overcoming industry challenges such as inflation and supply chain disruptions.[20]
National Environmental Policy Act
Like other major permitting actions, approval of the construction and operations plan is subject to the National Environmental Policy Act and requires preparation of an environmental impact statement (EIS). The BOEM is the lead federal agency in the EIS process, coordinating input from other federal agencies including the Coast Guard, the Fish and Wildlife Service, the Maritime Administration, the National Park Service, and the Army Corps of Engineers. In addition to approving each individual project's COP, the BOEM also performs an environmental review prior to opening an area of seafloor to leasing, although this review is not as stringent as a full EIS. The initial review largely serves to identify areas which are not developable and thus should be excluded from leasing.[citation needed]
The full COP review considers impacts to protected marine ecosystems, commercial and recreational fishing, as well as historic and cultural resources. The Coast Guard and Federal Aviation Administration evaluate each wind farm's COP for hazards to navigation and interference with coastal surveillance radars.[21]
Jones Act
The Merchant Marine Act of 1920 is a United States federal statute that provides for the promotion and maintenance of the American merchant marine.[22] Section 27 of the Merchant Marine Act is known as the Jones Act and deals with cabotage (coastwise trade) and requires that all goods transported by water between U.S. ports be carried on U.S.-flag ships, constructed in the United States, owned by U.S. citizens and crewed by U.S. citizens and U.S. permanent residents.[23]
Several ports are building or converting facilities to handle the large components[34][35] and manufacturing facilities such as a blade factories are planned.[36]
In 2019, the University of Delaware and the Danish Energy and Climate Academy jointly opened the first US skills training program for offshore wind energy professionals.[43]
In May 2014, the United States Department of Energy chose an offshore wind projects to receive funding.[52] Principle Power was planning a 30-MW WindFloat project in 2013 using 6-MW Siemens turbines in 366 m of water near Coos Bay, Oregon to be operational in 2017,[53] but the project was cancelled as too costly.[54][55][56][57] Interest has been renewed.[58]
Wind power is a branch of the energy industry that has expanded quickly in the United States over the last several years. From January through December 2023, 425.2 terawatt-hours were generated by wind power, or 10.18% of electricity in the United States. The average wind turbine generates enough electricity in 46 minutes to power the average American home for one month. In 2019, wind power surpassed hydroelectric power as the largest renewable energy source in the U.S.
Wind power in California had initiative and early development during Governor Jerry Brown's first two terms in the late 1970s and early 1980s. The state's wind power capacity has grown by nearly 350% since 2001, when it was less than 1,700 MW. In 2016, wind energy supplied about 6.9% of California's total electricity needs, or enough to power more than 1.3 million households. Most of California's wind generation is found in the Tehachapi area of Kern County, California, with some large projects in Solano, Contra Costa and Riverside counties as well. California is among the states with the largest amount of installed wind power capacity. In recent years, California has lagged behind other states when it comes to the installation of wind power. It was ranked 4th overall for wind power electrical generation at the end of 2016 behind Texas, Iowa, and Oklahoma. As of 2019, California had 5,973 megawatts (MW) of wind power generating capacity installed.
A floating wind turbine is an offshore wind turbine mounted on a floating structure that allows the turbine to generate electricity in water depths where fixed-foundation turbines are not feasible. Floating wind farms have the potential to significantly increase the sea area available for offshore wind farms, especially in countries with limited shallow waters, such as Spain, Portugal, Japan, France and the United States' West Coast. Locating wind farms further offshore can also reduce visual pollution, provide better accommodation for fishing and shipping lanes, and reach stronger and more consistent winds.
New York has 2,192 MW of installed wind power capacity as of 2022. Most of New York's wind power is located in upstate New York as onshore wind farms. New York has set a goal of developing 9,000 MW of offshore installed wind power capacity by 2035 that will power an estimated 6 million homes. As of October 2022, New York has five offshore wind farms in development with approximately 4,300 MW installed capacity.
Offshore wind power or offshore wind energy is the generation of electricity through wind farms in bodies of water, usually at sea. There are higher wind speeds offshore than on land, so offshore farms generate more electricity per amount of capacity installed. Offshore wind farms are also less controversial than those on land, as they have less impact on people and the landscape.
The U.S. state of Massachusetts has vast wind energy resources offshore, as well as significant resources onshore. The 2016 update to the states's Clean Energy and Climate Plan had a goal of reducing 1990 baseline greenhouse gas emissions levels by 25% by 2020. Current goals include installing 3,500 megawatts (MW) of offshore wind power in the state by 2035. However, as of Q4 2021 the state had only 120 MW of wind powered electricity generating capacity, responsible for generating 0.9% of in-state electricity production. The state has awarded contracts to two offshore projects, the 800 MW Vineyard Wind project and 804 MW Mayflower Wind project. Construction began on the Vineyard Wind 1 project on November 18, 2021, after a long fight for approval. Commonwealth Wind was selected for development in 2021, but the developer has attempted to cancel the project due to increased costs. There are eight projects planned for off the southern coast of Massachusetts, though some will deliver power to Rhode Island, Connecticut, and New York.
In Japan's electricity sector, wind power generates a small proportion of the country's electricity. It has been estimated that Japan has the potential for 144 gigawatts (GW) for onshore wind and 608 GW of offshore wind capacity. As of 2023, the country had a total installed capacity of 5.2 GW.
Wind power in New Jersey is in the early stages of development. New Jersey has just six wind turbines, but the state has plans to develop several major offshore wind projects on the continental shelf of the Atlantic Ocean off the southern Jersey Shore. Legislation has been enacted to support the industry through economic incentives and to permit wind turbines on existing piers.
Dogger Bank Wind Farm is a group of offshore wind farms under construction 130 to 200 kilometres off the east coast of Yorkshire, England in the North Sea. It is considered to be the world's largest offshore windfarm. It was developed by the Forewind consortium, with three phases envisioned - first phase, second phase and third phase. In 2015, the third phase was abandoned, while the first and second phases were granted consent. It was initially expected that the Dogger Bank development will consist of four offshore wind farms, each with a capacity of up to 1.2 GW, creating a combined capacity of 4.8 GW. As of 2023, a total of 277 turbines are expected to be built and produce a capacity of 3.6 GW, enough to power 6 million homes.
Wind power in Virginia is in the early stages of development. In March 2015, Virginia became the first state in the United States to receive a wind energy research lease to build and operate offshore wind turbines in federal waters. Virginia has no utility scale wind farms.
Wind power in Maryland, which has land-based and offshore resources, is in the early stages of development. As of 2016, Maryland has 191 megawatts (MW) of wind powered electricity generating capacity, responsible for 1.4% of in-state generated electricity. Two offshore wind farm projects that will supply wind-generated power to the state are underway.
Wind power in North Carolina is found along the coastal areas in the east and mountain regions in the western part of the state. The state has significant offshore wind resources. In 2015, small scale wind turbine projects were found throughout the state. In 2016, North Carolina's first large scale wind project, and the first in the southeastern U.S., was completed near Elizabeth City.
Wind power is a form of renewable energy in South Korea with the goal of reducing greenhouse gas (GHG) and particulate matter (PM) emissions caused by coal based power. After two oil crises dating back to the 1970s, the South Korean government needed to transition to renewable energy, which encouraged their first renewable energy law in 1987.
Ocean Wind was a proposed utility-scale 2,248 MW offshore wind farm to be located on the Outer Continental Shelf approximately 15 miles (24 km) off the coast of Atlantic City, New Jersey. It was being developed by Ørsted US Offshore Wind in conjunction with Public Service Enterprise Group (PSE&G). Construction and commissioning were planned for the mid-2020s. The closed Oyster Creek Nuclear Generating Station and B.L. England Generating Station would provide transmission points for energy generated by the wind farm.
Skipjack is a 966 MW capacity off shore wind farm, proposed by Ørsted US Offshore Wind to be built on the Outer Continental Shelf Offshore Delaware, approximately 16.9 nautical miles from the coast opposite Fenwick Island. It was originally projected that the project, which will provide power to Maryland, would be commissioned in 2022, It is one of the wind farm projects providing wind power to Maryland, the others being MarWin and Momentum Wind.
South Fork Wind Farm is a utility-scale offshore wind farm on the Outer Continental Shelf Offshore Rhode Island, providing energy to New York state.
Vineyard Wind 1 is an offshore wind farm under construction in U.S. federal waters in the Atlantic Ocean in Bureau of Ocean Energy Management-designated Lease Area OCS-A 0520, about 13 nautical miles south of Martha's Vineyard and Nantucket, Massachusetts. The array is designed to include 62 wind turbines manufactured by GE Offshore Wind with a nameplate capacity of 804 MW combined, equivalent to the annual power use of 400,000 homes. The Massachusetts Department of Public Utilities approved the project in 2019. Construction began on November 18, 2021. In October 2023, the first turbine was installed. Power from the first turbine started flowing into the ISO New England grid on January 2, 2024. Construction is expected to be complete by the end of 2024.
The Coastal Virginia Offshore Wind (CVOW) is an offshore wind energy project located about 43 km (27 mi) off the coast of Virginia Beach, Virginia, U.S. The initial phase, a two-turbine, 12-MW pilot project constructed in 2020, is the second utility scale offshore wind farm operating in the United States. Dominion Energy and Ørsted US Offshore Wind collaborated on the project, which is estimated to have cost $300 million and is expected to generate enough electricity to power up to 3,000 homes. It is the first utility scale wind farm serving Virginia and the first built in U.S. federal waters, in a wind lease area that covers about 2,135 acres.
Empire Wind is a proposed utility-scale offshore wind farm on the Outer Continental Shelf Offshore New York. It will be located in Bureau of Ocean Energy Management (BOEM) lease area OCS-A 0512 in the New York Bight about 15 miles (24 km) south of Jones Beach, Long Island.
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