Coastal Virginia finds its feet

In: Windfarms
27/05/2020

Ørsted, Jan De Nul Group & Dominion Energy have installed the first turbine foundation for the
Coastal Virginia Offshore Wind (CVOW), off the US east coast, in federal waters. The first monopile was installed using Jan De Nul's jack-up installation vessel Vole au Vent.

The 12 MW CVOW project is the first offshore wind project in US federal waters and is positioned in a federal lease area about 27 miles off the coast of Virginia Beach. The monopile foundations will support two Siemens Gamesa’s 6-MW
SWT-6.0-154 wind turbines. The pilot project is set to come online later this year and is being developed by Ørsted on behalf of American power and energy company will proceed Dominion Energy.

Dominion Energy plans to install a massive 2,640 MW offshore wind development off the Virginia coastline. The exact quantity of turbines to be deployed is subject to final project site conditions. All turbine installations are expected to be completed by 2026. Once online, the project is expected to provide enough clean energy to power 650,000 homes at rated wind speed.

Just yesterday (26 April 2020), Dominion Energy and Siemens Gamesa announced a conditional supply agreement for  
SG 14-222 DD turbines for the larger project. The SG 14-222 DD is Siemens Gamesa's latest offshore turbine variant and is said to have the capability to produce up to 15 MW with a 222 metre rotor.

The turbine’s 222 metre diameter rotor, just shy of the length of the USS Wisconsin, one of the largest battleships built by the U.S. Navy, uses the new Siemens Gamesa B108 blades. Nearly 50 feet taller than the Statue of Liberty, each 108 metre long IntegralBlade is cast in one piece using patented Siemens Gamesa blade technologies. At 39,000 m2, the turbine’s swept area is equivalent to approximately seven NFL football fields.

Siemens Gamesa stated that it continues to work with local stakeholders to investigate a potential blade manufacturing facility for these turbines on the East Coast, potentially the first facility custom-built to manufacture components for the SG 14-222. Decisions on sourcing and supply chain to serve the U.S. market are expected to be made within the next year.

For more information on offshore wind developments in the U.S. and crew transfer vessels,
click here. You can also view projects worldwide on 4C Offshore's interactive map.

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