On June 20, 2023, the New York Independent System Operator (NYISO) announced that its Board of Directors had selected the Propel Alternate Solution 5 transmission project to meet the Long Island Offshore Wind Export Public Policy Transmission Need (Long Island Need).[1] The New York State Public Service Commission (PSC) initially declared the Long Island Need in March 2021, launching an effort by NYISO’s team of experts, the New York State Department of Public Service, developers, and stakeholders to address transmission needs in and around Long Island.

Propel Alternate Solution 5 will deliver at least 3,000 MW of offshore wind power from Long Island to the rest of New York. The project will add three new underground cables connecting Long Island with the rest of the state and a 345 kV transmission backbone across western/central Long Island. Through a partnership called Propel NY, the New York Power Authority and New York Transco will develop the project. Propel Alternate Solution 5 is expected to be in service by May 2030, with an estimated cost of $3.26 billion. According to NYISO’s analysis, the project's potential economic benefits are comparable to or greater than the project cost over 20 years. NYISO expects the project to bring the state closer to its 9,000 MW of offshore wind energy goal by 2035.

[1] https://www.nyiso.com/-/press-release-%7C-nyiso-board-selects-transmission-project-to-deliver-offshore-wind-energy