Millstone is a 2.3 GW Nuclear asset in ISO New England, currently Operating.
Millstone is reported in Connecticut since 1975 under Dominion Energy Nuclear Conn Inc. Available operating and financial measures include 84.5% capacity factor and 16709 GWh annual generation; $4215/kW reported CapEx.
- Location
- New London, Connecticut
- Technology
- Nuclear
- Owner / parent
- Dominion Energy Nuclear Conn Inc
- Operator
- Dominion Energy Nuclear Conn Inc
- Grid
- ISO New England
- Plant ID
- 566
What stands out
Millstone is a 2.3 GW Nuclear asset in Connecticut with status Operating.
Latest annual operating measures report 84.5% capacity factor and 16709 GWh annual generation.
Available financial measures include $4215/kW CapEx.
Latest linked story: “CT and nuclear power. It’s a long-term relationship with questions about picking up the check.” (Hartford Courant, 2025-11-24).
Market and operating context
- ISO / market
- ISO New England
- Balancing authority
- ISO New England Inc.
- NERC region
- NPCC
- State rank
- #1 of 1
- National rank
- #22 of 58
Why it matters
For this asset in ISO New England, operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.
