How much did the Vineyard Wind 1 offshore wind farm cost?
Vineyard Wind 1 is an 804 MW offshore wind farm of 62 GE Haliade-X turbines about 15 miles south of Martha's Vineyard, Massachusetts, developed by Avangrid and Copenhagen Infrastructure Partners as the first large-scale offshore wind project in the United States. Onshore construction began in 2021 and offshore work in 2022; the first power was delivered on 2 January 2024 and the last blades were installed on 13 March 2026. WBUR reports the project cost as USD 4.5 billion.
Published project estimate
$4.5 billion
Cost basis: 2026
WosketompCC BY-SA 4.0
Cost evidence
Basis of the published figure
Published project estimate2026
Project metrics
Key dimensions
- Powerwbur.org
- 804 MW
Project record