| # | Plant | Region | MW |
|---|---|---|---|
| 1 | Bahía de Bizkaia power station | Basque Country | 788 |
| 2 | Escatron Peaker A.I.E. power station | Aragon | 276 |
| 3 | Ence Huelva power station | Andalusia | 168 |
| 4 | Refineria La Rabida power station | Andalusia | 134 |
| 5 | Zabalgarbi power station | Basque Country | 96 |
| 6 | Cartagena Refinery power station | Murcia | 96 |
| 7 | Ence Navia power station | Asturias | 77 |
| 8 | Son Reus incineration power station | Balearic Islands | 73 |
| 9 | Sogama power station | Galicia | 72 |
| 10 | Barcelona Cartonboard power station | Catalonia | 51 |
| 11 | Motril Mill power station | Andalusia | 49 |
| 12 | Genfibre cogeneration power station | Castille and Leon | 48 |
| 13 | Tortosa Energia power station | Catalonia | 42 |
| 14 | Pobla De Claramunt power station | Catalonia | 34 |
| 15 | Smurfit Mengíbar power station | Andalusia | 32 |
| 16 | Losan Talosa power station | Castille and Leon | 28 |
| 17 | Álabe Villarrubia power station | Castille-La Mancha | 26 |
| 18 | Cella Factory power station | Aragon | 25 |
| 19 | Navia (Prat) power station | Asturias | 24 |
| 20 | Losan Pina power station | Castille-La Mancha | 23 |
| 21 | Enercrisa power station | Castille and Leon | 21 |
| 22 | Figuruelas power station | Aragon | 21 |
WRI Global Power Plant Database (CC BY 4.0).