MA 83C III OSW Awards — 1,632 MW combined
MA 83C Round III: Commonwealth Wind 1,232 MW (Avangrid+CIP) + Mayflower Wind expansion 400 MW (Shell+Ocean Winds). Avangrid terminated Commonwealth July 2023 ($48M penalty).
Largest MA OSW procurement at announcement
Deal Value
1,632MW
Capacity
Offshore Wind
Technology
MA
Location
Deal Details
- Deal Type
- Power Purchase Agreement
- Seller / Sponsor
- Commonwealth Wind (Avangrid+CIP) — 1,232 MW + Mayflower Wind expansion (Shell+Ocean Winds) — 400 MW
- Buyer / Financier
- MA EDCs
- Offtaker
- MA EDCs
- Deal Value
- Largest MA OSW procurement at announcement
- Stage
- Development
- ISO/RTO
- ISO-NE
- Source
- offshorewind.biz
Related Deals
Mayflower Wind — 400 MW offshore wind (later renamed SouthCoast Wind)
Mayflower Wind (Shell + Ocean Winds JV) — later renamed SouthCoast Wind → MA EDCs (National Grid, Eversource, Unitil)
~$120M economic development commitment
Commonwealth Wind — 1,232 MW offshore wind
Commonwealth Wind / Avangrid (Iberdrola) → MA EDCs (National Grid, Eversource, Unitil)
1,232 MW
Vineyard Wind 1 — 800 MW (84 turbines), 15 mi south of Martha's Vineyard MA
Avangrid Renewables (50%) + Copenhagen Infrastructure Partners (50%) → MA EDCs
Federal approval (no value)
Vineyard Wind 1 — 800 MW offshore wind, offshore Massachusetts (62 turbines)
Vineyard Wind (Avangrid; Copenhagen Infrastructure Partners) → Massachusetts utilities
New England Wind 1 — 791 MW offshore wind, federal lease area OCS-A 0534, ~30 miles south of Barnstable, Massachusetts
Avangrid Renewables (Iberdrola Group) → Massachusetts ratepayers
Undisclosed OREC strike
Buckleberry Solar — Solar project, NC (CPLE). MW not publicly disclosed.
Buckleberry Solar, LLC → Duke Energy Progress, LLC
Get deals like this in your inbox
Free weekly clean energy deal intelligence. Every Monday.