Checked
Millstone Nuclear Plant
3.2 miles WSW of New London, CT · Connecticut
- Millstone 2
- 100%
- Power on 10/29/2026
- Millstone 3
- 0%
- Power on 10/29/2026
Millstone 2
- Docket number
- 05000336
- Reactor type
- Pressurized water reactor (PWR)
- Reactor vendor
- Combustion Engineering
- Licensed thermal power
- 2,700 MWt
- License expires
- 07/31/2035
- Operator
- Dominion Generation
- Location
- 3.2 miles WSW of New London, CT
Millstone 2 power by month
Average daily power level, last 12 months
Swipe the table sideways to see more columns.
| Month | Average power | Days at 0% | Days reported |
|---|---|---|---|
| 10/2026 | 100.0% | 0 | 29 |
| 09/2026 | 100.0% | 0 | 30 |
| 08/2026 | 91.8% | 2 | 31 |
| 07/2026 | 100.0% | 0 | 31 |
| 06/2026 | 60.1% | 10 | 30 |
| 05/2026 | 51.4% | 13 | 31 |
| 04/2026 | 36.5% | 18 | 30 |
| 03/2026 | 99.6% | 0 | 31 |
| 02/2026 | 100.0% | 0 | 28 |
| 01/2026 | 100.0% | 0 | 31 |
| 12/2025 | 100.0% | 0 | 31 |
| 11/2025 | 100.0% | 0 | 30 |
| 10/2025 | 100.0% | 0 | 2 |
Millstone 3
- Docket number
- 05000423
- Reactor type
- Pressurized water reactor (PWR)
- Reactor vendor
- Westinghouse
- Licensed thermal power
- 3,650 MWt
- License expires
- 11/25/2045
- Operator
- Dominion Generation
- Location
- 3.2 miles WSW of New London, CT
Millstone 3 power by month
Average daily power level, last 12 months
Swipe the table sideways to see more columns.
| Month | Average power | Days at 0% | Days reported |
|---|---|---|---|
| 10/2026 | 37.9% | 18 | 29 |
| 09/2026 | 100.0% | 0 | 30 |
| 08/2026 | 100.0% | 0 | 31 |
| 07/2026 | 100.0% | 0 | 31 |
| 06/2026 | 100.0% | 0 | 30 |
| 05/2026 | 100.0% | 0 | 31 |
| 04/2026 | 100.0% | 0 | 30 |
| 03/2026 | 100.0% | 0 | 31 |
| 02/2026 | 100.0% | 0 | 28 |
| 01/2026 | 100.0% | 0 | 31 |
| 12/2025 | 100.0% | 0 | 31 |
| 11/2025 | 98.3% | 0 | 30 |
| 10/2025 | 100.0% | 0 | 2 |
Power levels are the percent of licensed thermal power that each plant reported to the Nuclear Regulatory Commission for the morning of each day. Zero percent usually means the reactor is shut down for refueling or maintenance. This is not a safety rating. For emergencies near a plant, follow your local emergency management agency.
Source: U.S. Nuclear Regulatory Commission, Power Reactor Status Reports and List of Power Reactor Units · Last updated 10/29/2026
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