| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 4415 | (36.70%) | -10 | (-0.08%) |
| Aragon | 4707 | 3621 | (76.93%) | 5 | (0.11%) |
| Asturias | 484 | 293 | (60.54%) | -11 | (-2.27%) |
| Cantabria | 575 | 447 | (77.74%) | -1 | (-0.17%) |
| Castilla y Leon | 8292 | 4894 | (59.02%) | -26 | (-0.31%) |
| Castilla-La Mancha | 5797 | 2452 | (42.30%) | 6 | (0.10%) |
| Cataluña | 1950 | 1246 | (63.90%) | 29 | (1.49%) |
| Comunidad de Madrid | 1060 | 790 | (74.53%) | 3 | (0.28%) |
| Comunidad Valenciana | 1956 | 1333 | (68.15%) | 5 | (0.26%) |
| Extremadura | 14456 | 5642 | (39.03%) | -120 | (-0.83%) |
| Galicia | 3220 | 1821 | (56.55%) | -15 | (-0.47%) |
| La Rioja | 190 | 175 | (91.83%) | 0 | (0.00%) |
| Navarra | 1019 | 888 | (87.14%) | -17 | (-1.67%) |
| Pais Vasco | 252 | 224 | (88.89%) | -1 | (-0.40%) |
| Region de Murcia | 148 | 60 | (40.54%) | 2 | (1.35%) |
