South Texas-1, United States
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| Reactor Type | Commercial Reactor |
| Process | PWR |
| Vendor | Westinghouse |
| Owner | Nrg Energy, Inc. |
| Model | W (4-loop) |
| Operator | Stp Nuclear Operating Co. |
| Capacity Net | 1280 MWe |
| Capacity Gross | 1354 MWe |
| Capacity Thermal | 3853 MWt |
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| Start Construction | 22 December 1975 |
| Criticality | 8 March 1988 |
| Grid Connection | 30 March 1988 |
| Commercial Operation | 25 August 1988 |
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| Output Life | 221.45 TWh |
| Capacity Factor Life | 82.3 % |