| Cofrentes nuclear power plant | 1.1 GW | — |
| Vandellos nuclear power plant | 1.1 GW | — |
| Trillo nuclear power plant | 1.1 GW | — |
| Almaraz nuclear power plant | 1.0 GW | — |
| Almaraz nuclear power plant | 1.0 GW | — |
| Ascó nuclear power plant | 1.0 GW | — |
| Ascó nuclear power plant | 1.0 GW | — |
| José María Oriol hydroelectric plant | 957 MW | Iberdrola |
| Cortes La Muela II hydroelectric plant | 882 MW | Iberdrola |
| Besós 5 power station | 859 MW | Endesa |
| Castellón power station | 858 MW | Iberdrola Generacion |
| As Pontes power station | 856 MW | Endesa |
| Arcos de la Frontera power station | 823 MW | Iberdrola Generacion |
| Bahia de Algeciras power station | 821 MW | Repsol |
| Escombreras Iberdrola power station | 816 MW | Iberdrola |
| Aldeadàvila hydroelectric plant | 810 MW | Iberdrola |
| Villarino hydroelectric plant | 810 MW | Iberdrola |
| Escatrón 3 power station | 804 MW | Repsol |
| Castelnou power station | 800 MW | Initec Energia |
| Amorebieta power station | 786 MW | Bizkaia Energia |
| Bahía de Bizkaia power station | 785 MW | Bahia de Bizkaia Electricidad |
| Castellón power station | 782 MW | Iberdrola Generacion |
| Cortes La Muela I hydroelectric plant | 635 MW | Iberdrola |
| Cifuentes-Trillo solar farm | 626 MW | — |
| Francisco Pizarro solar farm | 553 MW | — |
| Núñez De Balboa solar farm | 500 MW | — |
| Cedillo hydroelectric plant | 500 MW | Iberdrola |
| Aboño power station | 494 MW | Corporación Masaveu |
| Mula Solar Photovoltaic Power Plant | 494 MW | — |
| Aboño power station | 494 MW | Corporación Masaveu |
| Estany Gento-Sallente hydroelectric plant | 440 MW | Endesa |
| Puerto De Barcelona power station | 434.8 MW | Naturgy Energy Group |
| Puerto De Barcelona power station | 434.8 MW | Naturgy Energy Group |
| Aldeadàvila II hydroelectric plant | 433 MW | Iberdrola |
| Puerto De Barcelona power station | 431.4 MW | Naturgy Energy Group |
| Puerto De Barcelona power station | 431.4 MW | Naturgy Energy Group |
| Soto de Ribera power station | 428 MW | EDP |
| Soto de Ribera power station | 428 MW | EDP |
| Soto de Ribera power station | 426 MW | EDP |
| Soto de Ribera power station | 426 MW | EDP |
| Castejón power station | 424.9 MW | TotalEnergies |
| Castejón power station | 424.9 MW | TotalEnergies |
| Plana del Vent power station | 420.1 MW | Naturgy Energy Group |
| Plana del Vent power station | 420.1 MW | Naturgy Energy Group |
| Castejón power station | 418.4 MW | TotalEnergies |
| Castejón power station | 418.4 MW | TotalEnergies |
| Cartagena (Escombreras) power station | 418.2 MW | Naturgy Energy Group |
| Cartagena (Escombreras) power station | 418.2 MW | Naturgy Energy Group |
| Cartagena (Escombreras) power station | 417.8 MW | Naturgy Energy Group |
| Cartagena (Escombreras) power station | 417.8 MW | Naturgy Energy Group |
| Tarragona power station | 417 MW | Tarragona Power |
| Tarragona power station | 417 MW | Tarragona Power |
| Málaga power station | 416 MW | Naturgy Energy Group |
| Málaga power station | 416 MW | Naturgy Energy Group |
| Plana del Vent power station | 414 MW | Alpiq Energía España |
| Plana del Vent power station | 414 MW | Alpiq Energía España |
| Cartagena (Escombreras) power station | 412.7 MW | Naturgy Energy Group |
| Cartagena (Escombreras) power station | 412.7 MW | Naturgy Energy Group |
| Besós 3 power station | 412 MW | Endesa |
| Besós 3 power station | 412 MW | Endesa |
| Sagunto power station | 411.8 MW | Naturgy Energy Group |
| Sagunto power station | 411.8 MW | Naturgy Energy Group |
| Sagunto power station | 410.6 MW | Naturgy Energy Group |
| Sagunto power station | 410.6 MW | Naturgy Energy Group |
| Sagunto power station | 409.7 MW | Naturgy Energy Group |
| Sagunto power station | 409.7 MW | Naturgy Energy Group |
| El Fangal power station | 402.6 MW | Engie España |
| El Fangal power station | 402.6 MW | Engie España |
| San Roque 2 power station | 402 MW | Endesa |
| San Roque 2 power station | 402 MW | Endesa |
| El Fangal power station | 401.4 MW | Engie España |
| El Fangal power station | 401.4 MW | Engie España |
| Besós 4 power station | 400 MW | Naturgy Energy Group |
| Besós 4 power station | 400 MW | Naturgy Energy Group |
| Santurce power station | 396 MW | Iberdrola |
| Santurce power station | 396 MW | Iberdrola |
| El Fangal power station | 395 MW | Engie España |
| El Fangal power station | 395 MW | Engie España |
| Arrubal power station | 394.6 MW | ContourGlobal |
| Arrubal power station | 394.6 MW | ContourGlobal |
| Campo de Gibraltar power station | 392.6 MW | Puente Mayorga Generación |
| Campo de Gibraltar power station | 392.6 MW | Puente Mayorga Generación |
| Cristobal Colón power station | 391 MW | Endesa |
| Palos power station | 391 MW | Naturgy Energy Group |
| Sabón 3 power station | 391 MW | Naturgy Energy Group |
| Cristobal Colón power station | 391 MW | Endesa |
| Palos power station | 391 MW | Naturgy Energy Group |
| Sabón 3 power station | 391 MW | Naturgy Energy Group |
| Arrubal power station | 390 MW | ContourGlobal |
| San Roque 1 power station | 390 MW | Endesa |
| Arrubal power station | 390 MW | ContourGlobal |
| San Roque 1 power station | 390 MW | Endesa |
| Arcos de la Frontera power station | 389.2 MW | Iberdrola Generacion |
| Arcos de la Frontera power station | 389.2 MW | Iberdrola Generacion |
| Palos power station | 389.1 MW | Naturgy Energy Group |
| Palos power station | 389.1 MW | Naturgy Energy Group |
| Campo de Gibraltar power station | 387.9 MW | Puente Mayorga Generación |
| Campo de Gibraltar power station | 387.9 MW | Puente Mayorga Generación |
| Palos power station | 386.7 MW | Naturgy Energy Group |
| Palos power station | 386.7 MW | Naturgy Energy Group |
| Aceca 3 power station | 386 MW | Iberdrola Generacion |
| Aceca 3 power station | 386 MW | Iberdrola Generacion |
| Castejón power station | 378.9 MW | Iberdrola |
| Castejón power station | 378.9 MW | Iberdrola |
| Tajo De La Encantada hydroelectric plant | 377 MW | Endesa |
| Arcos de la Frontera power station | 373.2 MW | Iberdrola Generacion |
| Arcos de la Frontera power station | 373.2 MW | Iberdrola Generacion |
| Aceca 4 power station | 373 MW | Naturgy Energy Group |
| Aceca 4 power station | 373 MW | Naturgy Energy Group |
| Mimosa Hybrid solar farm | 360 MW | — |
| Aguayo I hydroelectric plant | 360 MW | Repsol |
| Villalba de Guardo (Iberdrola) solar farm | 350 MW | — |
| Lorca solar farm | 339 MW | — |
| Trillo Node solar farm | 338 MW | — |
| GECAMA wind farm | 329.2 MW | — |
| Ceclavín solar farm | 328 MW | — |
| Oriol solar farm | 328 MW | — |
| Mequinenza hydroelectric plant | 322 MW | Enel |
| Ciudad Rodrigo solar farm | 318 MW | — |
| Puente Bibey hydroelectric plant | 315 MW | Iberdrola |
| Campo de Arañuelo solar farm | 300 MW | — |
| Talasol solar farm | 300 MW | — |
| Talayuela (Solarcentury) solar farm | 300 MW | — |
| Cedillo solar farm | 294.7 MW | — |
| Escatron Peaker A.I.E. power station | 275 MW | Ignis Energía |
| Cáceres (Bruc Energy) solar farm | 275 MW | — |
| Escatron Peaker A.I.E. power station | 275 MW | Ignis Energía |
| Conso hydroelectric plant | 270 MW | Iberdrola |
| Saucelle II hydroelectric plant | 269 MW | Iberdrola |
| Valdesolar solar farm | 264 MW | — |
| Riba Roja hydroelectric plant | 264 MW | Endesa |
| San Esteban hydroelectric plant | 263 MW | Iberdrola |
| Gasset solar farm | 258 MW | — |
| Saucelle hydroelectric plant | 251 MW | Iberdrola |
| Tabernas (Grenergy) solar farm | 250 MW | — |
| Valdecañas hydroelectric plant | 249 MW | Iberdrola |
| Cortes II hydroelectric plant | 246 MW | Iberdrola |
| Barranco de Tirajana power station | 236 MW | Endesa |
| Granadilla power station | 236 MW | Endesa |
| Barranco de Tirajana power station | 236 MW | Endesa |
| Granadilla power station | 236 MW | Endesa |
| Son Reus power station | 233 MW | Endesa |
| Son Reus power station | 233 MW | Endesa |
| Ca's Tresorer power station | 230 MW | Endesa |
| Ca's Tresorer power station | 230 MW | Endesa |
| Ca's Tresorer power station | 230 MW | Endesa |
| Ca's Tresorer power station | 230 MW | Endesa |
| Barranco de Tirajana power station | 226 MW | Endesa |
| Granadilla power station | 226 MW | Endesa |
| Son Reus power station | 226 MW | Endesa |
| Barranco de Tirajana power station | 226 MW | Endesa |
| Granadilla power station | 226 MW | Endesa |
| Son Reus power station | 226 MW | Endesa |
| Belesar I hydroelectric plant | 225 MW | — |
| Bolarque II hydroelectric plant | 220 MW | — |
| Moralets hydroelectric plant | 219 MW | Enel |
| Las Majas wind farm | 217 MW | — |
| Soutelo hydroelectric plant | 215 MW | Iberdrola |
| Guillena hydroelectric plant | 207 MW | Enel |
| Sigma (Reposal) solar farm | 204 MW | — |
| Chiprana solar farm | 200 MW | — |
| Renopool solar farm | 200 MW | — |
| Vilecha (Axpo) solar farm | 200 MW | — |
| Chira hydroelectric plant | 200 MW | — |
| San Esteban II hydroelectric plant | 188 MW | Iberdrola |
| Los Peares I hydroelectric plant | 181 MW | — |
| Bienvenida solar farm | 180 MW | — |
| Tico wind farm | 180 MW | — |
| Azután hydroelectric plant | 180 MW | Iberdrola |
| Don Rodrigo solar farm | 175 MW | — |
| Ricobayo I hydroelectric plant | 175 MW | Iberdrola |
| Olmedilla Hive solar farm | 169 MW | — |
| Maira Alpha solar farm | 165.3 MW | — |
| Salime hydroelectric plant | 160 MW | Enel |
| Carmonita Ministerio solar farm | 159 MW | — |
| Carmonita Ministerio solar farm | 159 MW | — |
| Carmonita Ministerio solar farm | 159 MW | — |
| La Isla solar farm | 157.5 MW | — |
| Sabinar Hive solar farm | 155 MW | — |
| Ayora (Grenergy) solar farm | 154.7 MW | — |
| Ricobayo II hydroelectric plant | 154 MW | Iberdrola |
| El Escudo wind farm | 151.2 MW | — |
| Arenales (Iberdrola) solar farm | 150 MW | — |
| Trillo Node solar farm | 150 MW | — |
| Alcalá De Guadaira Solar Park | 149 MW | — |
| Amazon Cabrera solar farm | 149 MW | — |
| Pinos Puente solar farm | 147.6 MW | — |
| Guillena (Iberdrola) solar farm | 144 MW | — |
| Maira Gamma solar farm | 140.1 MW | — |
| Trillo Node solar farm | 138 MW | — |
| Amazon Arco solar farm | 137.5 MW | — |
| Castano solar farm | 134 MW | — |
| Puerto Real solar farm | 133.6 MW | — |
| Cornatel hydroelectric plant | 132 MW | Enel |
| Torrejón hydroelectric plant | 132 MW | Iberdrola |
| Renopool solar farm | 130 MW | — |
| Alcúdia power station | 130 MW | GESA-Endesa |
| Alcúdia power station | 130 MW | GESA-Endesa |
| Frieira hydroelectric plant | 130 MW | — |
| Castrelo hydroelectric plant | 128 MW | — |
| Garnacha (ERG) solar farm | 127.5 MW | — |
| Almendralejo solar farm | 125 MW | — |
| Tanes hydroelectric plant | 123 MW | EDP |
| Cofrentes hydroelectric plant | 122 MW | Iberdrola |
| Puertollano Green Hydrogen Solar Plant | 120 MW | — |
| Tavascan Superior hydroelectric plant | 119 MW | Enel |
| Villalcampo II hydroelectric plant | 119 MW | Iberdrola |
| Centurión solar farm | 116.5 MW | — |
| Buniel wind farm | 114 MW | — |
| Las Majas wind farm | 114 MW | — |
| Castro II hydroelectric plant | 113 MW | Iberdrola |
| Amazon 1 solar farm | 111 MW | — |
| Amazon Solar Farm - Extremadura | 111 MW | — |
| Las Quinientas solar farm | 110 MW | — |
| Gabriel Y Galán hydroelectric plant | 110 MW | Iberdrola |
| Canelles hydroelectric plant | 107 MW | Enel |
| Cuevas Del Velasco wind farm | 105 MW | — |
| Sierra Del Escudo wind farm | 101 MW | — |
| Amazon Alamo solar farm | 100 MW | — |
| Cartagena solar farm | 100 MW | — |
| EKIAN (Iberdrola) solar farm | 100 MW | — |
| Gnowee solar farm | 100 MW | — |
| Guindalera wind farm | 100 MW | — |
| Pinta wind farm | 100 MW | — |
| Minglanilla solar farm | 99.6 MW | — |
| Minglanilla solar farm | 99.6 MW | — |
| Villalcampo hydroelectric plant | 99 MW | Iberdrola |
| Dulcinea solar farm | 95.2 MW | — |
| Cartagena Refinery power station | 95 MW | SABIC Innovative Plastics España |
| Cartagena Refinery power station | 95 MW | SABIC Innovative Plastics España |
| Pinatar solar farm | 93.2 MW | — |
| CSF Continua Anguita solar farm | 93 MW | — |
| Campillo De Altobuey wind farm | 91.2 MW | — |
| Campillo De Altobuey wind farm | 91.2 MW | — |
| La Flota solar farm | 89.4 MW | — |
| Rey solar farm | 89.1 MW | — |
| Rey solar farm | 89.1 MW | — |
| Rey solar farm | 89.1 MW | — |
| Rey solar farm | 89.1 MW | — |
| Ip hydroelectric plant | 89 MW | — |
| Susqueda hydroelectric plant | 89 MW | Endesa |
| Eriste hydroelectric plant | 88 MW | Endesa |
| Montamara 1 hydroelectric plant | 88 MW | Endesa |
| Lirios solar farm | 87.1 MW | — |
| Velle hydroelectric plant | 86 MW | — |
| El Morell power station | 85 MW | Repsol |
| Tarragona Refinery power station | 85 MW | Repsol |
| Totana solar farm | 85 MW | — |
| Remolina hydroelectric plant | 85 MW | Repsol |
| El Morell power station | 85 MW | Repsol |