Nuclear reactors supplied by Babcock & Wilcox
Babcock & Wilcox is recorded as the nuclear steam supply system (NSSS) supplier of 10 units in 1 country, per the IAEA PRIS register: 5 operating with 4,284 MWe net, 1 under construction and 4 shut down.
Pressurized water reactors with once-through steam generators; Three Mile Island among them. By country: United States (10). By technology: 10 PWR. The first unit was connected in 1962 and the most recent in 1978. The most powerful unit in operation is Davis Besse 1, in the United States, with 894 MWe. One unit is under construction: Three Mile Island 1 (United States). 4 units have been permanently shut down.
PRIS supplier codes: B&W · Reference · Names per IAEA, Nuclear Power Reactors in the World 2025, table 25
Units with a Babcock & Wilcox nuclear steam supply system
| Unit | Country | Type | Model | MWe | Grid connection | Status |
|---|---|---|---|---|---|---|
| Indian Point 1 |  United States | PWR | unknown | 257 | 1962 | Shut down |
| Oconee 1 | United States | PWR | B & W (DRY) | 847 | 1973 | Operating |
| Oconee 2 | United States | PWR | B & W (DRY) | 848 | 1973 | Operating |
| Arkansas Nuclear One 1 | United States | PWR | B & W (DRY-Cont) | 836 | 1974 | Operating |
| Oconee 3 | United States | PWR | B & W (DRY) | 859 | 1974 | Operating |
| Rancho Seco 1 | United States | PWR | WH (DRY) | 873 | 1974 | Shut down |
| Three Mile Island 1 | United States | PWR | B & W (DRY) | 835 | 1974 | Under construction |
| Crystal River 3 | United States | PWR | B&W LLP (DRYAMB) | 860 | 1977 | Shut down |
| Davis Besse 1 | United States | PWR | B & W (DRY) | 894 | 1977 | Operating |
| Three Mile Island 2 | United States | PWR | B & W (DRY) | 880 | 1978 | Shut down |
Data: Global Energy Monitor (CC BY 4.0), IAEA PRIS 2025, Wikipedia (CC BY-SA), Wikidata and Wikimedia Commons. Capacities in net MWe unless stated.
Other vendors
Westinghouse · Framatome · General Electric · Rosatom (Atomenergomash, Atomstroyexport) · Atomenergoexport (USSR) · China First Heavy Industries · Siemens / Kraftwerk Union · Nuclear Power Corporation of India · Vendors