Largest Nuclear Plants Capacity Comparison (MW)
Compare the 10 largest nuclear plants by nameplate capacity, from Kashiwazaki at 7,965 MW to Hamaoka at 3,600 scale. MW totals with operator sources listed.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Kashiwazaki-Kariwa Largest nuclear site. Idle post Fukushima. | 7,965 megawatts | Niigata, Japan, 7 reactors, idle since 2011 | TEPCO Kashiwazaki spec: 7,965 MW nameplate |
| Kori (Gori) 476 under Kashiwazaki. | 7,489 megawatts | Busan, South Korea, 8 reactors | KHNP Kori spec: 7,489 MW nameplate |
| Bruce Nuclear Largest in North America. | 6,550 megawatts | Ontario, Canada, 8 reactors | Bruce Power spec: 6,550 MW nameplate |
| Hanul (Uljin) 650 under Bruce. | 5,900 megawatts | Gyeongsang, South Korea, 6 reactors | KHNP Hanul spec: 5,900 MW nameplate |
| Hanbit (Yeonggwang) Tied with Hanul. | 5,900 megawatts | Jeolla, South Korea, 6 reactors | KHNP Hanbit spec: 5,900 MW nameplate |
| Zaporizhzhia Largest in Europe. | 5,700 megawatts | Zaporizhzhia, Ukraine, 6 reactors | Energoatom Zaporizhzhia spec: 5,700 MW nameplate |
| Gravelines 240 under Zaporizhzhia. | 5,460 megawatts | Nord, France, 6 reactors | EDF Gravelines spec: 5,460 MW nameplate |
| Paluel 140 under Gravelines. | 5,320 megawatts | Normandy, France, 4 reactors | EDF Paluel spec: 5,320 MW nameplate |
| Cattenom 120 under Paluel. | 5,200 megawatts | Grand Est, France, 4 reactors | EDF Cattenom spec: 5,200 MW nameplate |
| Hamaoka Smallest row here. Idle post Fukushima. | 3,600 megawatts | Shizuoka, Japan, 5 reactors, kept for scale | Chubu Electric Hamaoka spec: 3,600 MW nameplate |
About this converter
Kashiwazaki-Kariwa runs 7,965 MW nameplate, 476 clear of Kori at 7,489. Bruce at 6,550, Hanul and Hanbit at 5,900 each, Zaporizhzhia at 5,700, Gravelines at 5,460, Paluel at 5,320, Cattenom at 5,200 and Hamaoka at 3,600 for scale follow. Nameplate means reactor sum at site, not yearly output. All rows here are nuclear sites, since hydro giants rank on a separate page. Kashiwazaki and Hamaoka sit idle since 2011 with that noted.
How to use it
Pick two plants and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Try Kashiwazaki against Cattenom to see the 2,765 gap. The bars below scale to Kashiwazaki so Hamaoka looks short. Switch the unit to gigawatts for short figures. Ratios are exact divisions of the nameplate totals.
Hydro vs nuclear splits this site. Largest-power-station-capacities ranks hydro giants to 22,500 MW. This page ranks nuclear sites to 7,965 MW. Kashiwazaki 7,965 idle since 2011 quake still ranks by nameplate. Hanul and Hanbit tie at 5,900 as sister Korean sites. Figures follow TEPCO, KHNP, Bruce Power, Energoatom and EDF nameplates.
FAQ
What is the largest nuclear plant?
Kashiwazaki-Kariwa at 7,965 MW. Idle since 2011 but still ranked by nameplate.
Is this the same as biggest power station?
No. Hydro giants to 22,500 rank elsewhere. This page keeps nuclear sites only.
What is the largest in Europe?
Zaporizhzhia at 5,700 MW. Gravelines follows at 5,460.
Why list idle Hamaoka?
For scale at 3,600 MW. Idle post Fukushima like Kashiwazaki.
Sources
- Operator nameplates: TEPCO Kashiwazaki 7,965; KHNP Kori 7,489, Hanul 5,900, Hanbit 5,900; Bruce Power 6,550; Energoatom Zaporizhzhia 5,700; EDF Gravelines 5,460, Paluel 5,320, Cattenom 5,200; Chubu Hamaoka 3,600 MW
Last verified: 2026-10-09 · 10 entries
More power levels converters
Dragon Ball Power Level Converter and Comparison
Compare 20 official Dragon Ball power levels: Goku, Vegeta, Frieza, Piccolo, Gohan and more. Interactive converter with Daizenshuu sources.
Aardman Movie Runtime Comparison (Minutes)
Compare 9 Aardman runtimes in minutes, from the 79 minute Vengeance Most Fowl to the 97 minute Arthur Christmas. Studio data in a linked tool. right now.
Advance Wars CO Power Star Comparison
Compare 16 Advance Wars CO power stars: Colin 2, Andy 3, Sami 3, Drake 4, Kanbei 4, Eagle 5, Hawke 5 and more. AW1 plus AW2 values. See full CO table here now.
← Largest National Parks Area Comparison · Largest Palaces Floor Area Comparison →