Siemens Energy to Connect NY's First Utility-Scale Offshore Wind Farm to the Grid

Siemens Energy has been  awarded its first offshore grid connection project  in the United States. In a consortium with Aker Solutions, the company will supply the high-voltage direct current (HVDC) transmission system  that  will bring green energy from Sunrise Wind, New York’s first utility-scale offshore wind project, to the mainland. 
Siemens Energy to Connect NY
: The offshore converter station (Siemens Energy)

It’s the first offshore wind project  in the U.S. to use HVDC technology. The approximately 924 megawatts wind farm is developed by a joint venture between Danish clean energy company Ørsted  and US-based energy provider  Eversource. Located about 50 kilometers (30 miles) east  of Long Island, Sunrise Wind will supply green energy to nearly 600,000 homes in New York State and support the state to meet its 100 percent clean electricity  by 2040 goal.

“To date, we have connected the offshore grid to the mainland 21 times,  bringing more  than  12 gigawatts of wind power  to households in Europe.  The fact that  we are now able to proceed with our very first offshore HVDC grid connection project  in the United States  makes  us proud,” said Tim Holt, member of the Executive Board at Siemens Energy.

“Carbon-neutrality goals will not be met without wide-scale deployment of renewable energy projects like Sunrise Wind. There will be many more  wind projects like this in the U.S. and we are happy  to do our part to help provide the country with sustainable power.”

Siemens Energy will deliver the HVDC system  on a turnkey  basis and provide onshore civil work in partnership with local companies. The HVDC system  will enable the low-loss transport of the generated green energy from the wind farm to the mainland. It consists  of two converter stations.

The offshore converter station will collect the 66 kilovolts (kV) alternating current (AC) power generated by the wind turbines through an inter-array cable system  and transform it to 320 kV DC for transmission through a 160 kilometers export  cable to the onshore converter station, located at Holbrook on Long Island.

The onshore station will convert the power  back to AC to feed it into the distribution grid which will bring the energy to homes, industry, and other end users  in New York. Aker Solutions  is responsible for the platform consisting of a steel jacket substructure, and a topside platform deck housing the electrical  equipment.

Sunrise Wind will support the establishment of an enduring offshore wind supply chain in New York State.  The onshore installation of the project’s converter station will be carried out by local companies. The final deliveries  are scheduled for second half of 2025.

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