| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 3632 | (30.19%) | -13 | (-0.11%) |
| Aragon | 4707 | 2473 | (52.54%) | -9 | (-0.19%) |
| Asturias | 484 | 274 | (56.61%) | -14 | (-2.89%) |
| Cantabria | 575 | 231 | (40.17%) | 4 | (0.70%) |
| Castilla y Leon | 8292 | 3256 | (39.26%) | -73 | (-0.88%) |
| Castilla-La Mancha | 5797 | 2056 | (35.47%) | -3 | (-0.05%) |
| Cataluña | 1950 | 1138 | (58.36%) | -2 | (-0.10%) |
| Comunidad de Madrid | 1060 | 642 | (60.57%) | -10 | (-0.94%) |
| Comunidad Valenciana | 1956 | 951 | (48.62%) | 5 | (0.26%) |
| Extremadura | 14456 | 5312 | (36.74%) | -22 | (-0.15%) |
| Galicia | 3220 | 1413 | (43.88%) | -41 | (-1.27%) |
| La Rioja | 190 | 68 | (35.68%) | -1 | (-0.52%) |
| Navarra | 1019 | 307 | (30.13%) | 1 | (0.10%) |
| Pais Vasco | 252 | 144 | (57.14%) | -1 | (-0.40%) |
| Region de Murcia | 148 | 32 | (21.62%) | 0 | (0.00%) |
