| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12035 | 6539 | (54.33%) | -115 | (-0.96%) |
| Aragon | 4489 | 3506 | (78.10%) | -34 | (-0.76%) |
| Asturias | 484 | 433 | (89.46%) | 3 | (0.62%) |
| Cantabria | 575 | 537 | (93.39%) | -1 | (-0.17%) |
| Castilla y Leon | 8292 | 5413 | (65.28%) | -57 | (-0.69%) |
| Castilla-La Mancha | 5753 | 2135 | (37.11%) | -33 | (-0.57%) |
| Cataluña | 1950 | 1602 | (82.15%) | 19 | (0.97%) |
| Comunidad de Madrid | 1060 | 739 | (69.72%) | -14 | (-1.32%) |
| Comunidad Valenciana | 2447 | 948 | (38.74%) | -12 | (-0.49%) |
| Extremadura | 14219 | 7666 | (53.91%) | -108 | (-0.76%) |
| Galicia | 3220 | 2537 | (78.79%) | 17 | (0.53%) |
| La Rioja | 136 | 114 | (83.82%) | -2 | (-1.47%) |
| Navarra | 1014 | 846 | (83.43%) | 6 | (0.59%) |
| Pais Vasco | 252 | 205 | (81.35%) | -1 | (-0.40%) |
| Region de Murcia | 148 | 36 | (24.32%) | 1 | (0.68%) |
|