Millstone nuclear power plant 3
Gross capacity
1,280MW
Millstone nuclear power plant 3 is a pressurised water reactor unit at Millstone nuclear power plant in United States rated at 1,280 MW gross. It is operating. Commercial operation began 23 Apr 1986.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | Westinghouse 4-loopWH 4LP (DRYSUB) in the source |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,280MW |
| Net capacity (reference) | 1,210MW |
| Net capacity (design) | 1,159MW |
| Thermal output | 3,650MWt |
| NSSS vendor | Westinghouse Electric Companyall vendors |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Millstone nuclear power plant |
|---|---|
| Unit | 3 |
| Country | United States |
| Owner | Dominion Resources Inc100% |
| Operator | Dominion Energy |
| Coordinates | 41.3107, -72.1677 |
Live status
NRC daily report, unit key "Millstone 3"
Power level
…
loading
Last 90 days
Updated daily from the US reactor status feed. The NRC publishes a power
percentage only, with no reason for a reduction, so a unit at 0% may be refuelling, in a planned
outage or tripped. See outages.
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- China National Nuclear Corporation PWR fuel assemblies
- ENUSA Industrias Avanzadas PWR and BWR fuel assemblies
- Framatome PWR fuel assemblies
- KEPCO Nuclear Fuel PWR fuel assemblies
- Mitsubishi Heavy Industries PWR fuel assemblies
- Westinghouse Electric Company PWR fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units,
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 9 Aug 1974Construction start
- 23 Jan 1986First criticality
- 12 Feb 1986Grid connection
- 23 Apr 1986Commercial operation
Other units at Millstone nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Millstone nuclear power plant 1 | Retired | 684 |
| Millstone nuclear power plant 2 | 918 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-28
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data