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.
The approximately 924MW wind farm is developed by a joint venture between Ørsted and Eversource. Located about 50 kilometers east of Long Island, Sunrise Wind will supply green energy to nearly 600,000 homes in New York State. 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. Aker Solutions is responsible for the platform consisting of a steel jacket substructure, and a topside platform deck housing the electrical equipment. 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.
