| # | Plant | Fuel | Country | MW |
|---|---|---|---|---|
| 1 | Kernkraftwerk Leibstadt | Nuclear | Switzerland | 1,275 |
| 2 | Kernkraftwerk Beznau | Nuclear | Switzerland | 760 |
| 3 | Laufenburg | Hydro | Switzerland | 110 |
| 4 | Klingnau | Hydro | Switzerland | 43 |
| 5 | Augst | Hydro | Switzerland | 35 |
| 6 | Wettingen | Hydro | Switzerland | 25 |
| 7 | Bremgarten-Zufikon | Hydro | Switzerland | 20 |
| 8 | Beznau | Hydro | Switzerland | 20 |
| 9 | Aarau Stadt | Hydro | Switzerland | 17 |
| 10 | Beznau-Wehrkraftwerk | Hydro | Switzerland | 6 |
| 11 | Wettingen-Dotierzentrale | Hydro | Switzerland | 2 |
| 12 | Windisch | Hydro | Switzerland | 2 |
| 13 | Turgi | Hydro | Switzerland | 1 |
Method: ranked from open data — capacity & fuel from WRI Global Power Plant Database (CC BY 4.0); CO₂ measured for US EPA GHGRP / EU ETS records and modelled for Climate TRACE records. Sorted server-side; click any column to re-sort. Company-level data only.
Kernkraftwerk Leibstadt (Switzerland) ranks #1 with 1,275 mw.
This ranking covers 13 power plants in in Aargau, Switzerland.
1. Kernkraftwerk Leibstadt (1,275); 2. Kernkraftwerk Beznau (760); 3. Laufenburg (110).