| # | Plant | Fuel | Country | MW |
|---|---|---|---|---|
| 1 | Fljótsdalsvirkjun (Kárahnjúkar ) | Hydro | Iceland | 690 |
| 2 | Búrfell | Hydro | Iceland | 270 |
| 3 | Hellisheiði | Geothermal | Iceland | 213 |
| 4 | Hrauneyjafoss | Hydro | Iceland | 210 |
| 5 | Blanda | Hydro | Iceland | 150 |
| 6 | Sigalda | Hydro | Iceland | 150 |
| 7 | Nesjavellir | Geothermal | Iceland | 120 |
| 8 | Sultartangi | Hydro | Iceland | 120 |
| 9 | Reykjanes | Geothermal | Iceland | 100 |
| 10 | Búðarháls | Hydro | Iceland | 95 |
| 11 | Vatnsfell | Hydro | Iceland | 90 |
| 12 | Svartsengi | Geothermal | Iceland | 76 |
| 13 | Krafla | Geothermal | Iceland | 60 |
| 14 | Írafoss | Hydro | Iceland | 48 |
| 15 | Lagarfoss | Hydro | Iceland | 27 |
| 16 | Steingrímsstöð | Hydro | Iceland | 26 |
| 17 | Ljósafossvirkjun | Hydro | Iceland | 15 |
| 18 | Laxárvirkjun 3 | Hydro | Iceland | 14 |
| 19 | Andakíl | Hydro | Iceland | 8 |
| 20 | Bjarnarflag | Geothermal | Iceland | 3 |
Method: ranked from open data — capacity & fuel from WRI Global Power Plant Database (CC BY 4.0); measured CO₂ where reported to US EPA GHGRP, EU ETS or Climate TRACE. Sorted server-side; click any column to re-sort. Company-level data only.
