| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 5656 | (47.02%) | -10 | (-0.08%) |
| Aragon | 4489 | 3416 | (76.10%) | -67 | (-1.49%) |
| Asturias | 484 | 346 | (71.49%) | -12 | (-2.48%) |
| Cantabria | 575 | 428 | (74.43%) | 1 | (0.17%) |
| Castilla y Leon | 8292 | 5851 | (70.56%) | -66 | (-0.80%) |
| Castilla-La Mancha | 5797 | 1939 | (33.45%) | 14 | (0.24%) |
| Cataluña | 1950 | 1527 | (78.31%) | -30 | (-1.54%) |
| Comunidad de Madrid | 1060 | 649 | (61.23%) | 6 | (0.57%) |
| Comunidad Valenciana | 1956 | 830 | (42.43%) | 20 | (1.02%) |
| Extremadura | 14219 | 6997 | (49.21%) | 33 | (0.23%) |
| Galicia | 3220 | 2624 | (81.49%) | 21 | (0.65%) |
| La Rioja | 136 | 95 | (69.85%) | 1 | (0.74%) |
| Navarra | 1014 | 774 | (76.33%) | -8 | (-0.79%) |
| Pais Vasco | 252 | 191 | (75.79%) | 1 | (0.40%) |
| Region de Murcia | 148 | 61 | (41.22%) | 0 | (0.00%) |
