| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12035 | 6963 | (57.86%) | 22 | (0.18%) |
| Aragon | 4489 | 3235 | (72.07%) | -52 | (-1.16%) |
| Asturias | 484 | 325 | (67.15%) | -7 | (-1.45%) |
| Cantabria | 575 | 444 | (77.22%) | -1 | (-0.17%) |
| Castilla y Leon | 8292 | 4344 | (52.39%) | -1 | (-0.01%) |
| Castilla-La Mancha | 5753 | 1982 | (34.45%) | 23 | (0.40%) |
| Cataluña | 1950 | 1607 | (82.41%) | -18 | (-0.92%) |
| Comunidad de Madrid | 1060 | 766 | (72.26%) | -1 | (-0.09%) |
| Comunidad Valenciana | 2447 | 756 | (30.89%) | 9 | (0.37%) |
| Extremadura | 14219 | 7810 | (54.93%) | 17 | (0.12%) |
| Galicia | 3220 | 1844 | (57.27%) | 17 | (0.53%) |
| La Rioja | 136 | 55 | (40.44%) | 0 | (0.00%) |
| Navarra | 1014 | 409 | (40.34%) | 4 | (0.39%) |
| Pais Vasco | 252 | 177 | (70.24%) | -2 | (-0.79%) |
| Region de Murcia | 148 | 34 | (22.97%) | 0 | (0.00%) |
