| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 4056 | (33.72%) | -12 | (-0.10%) |
| Aragon | 4707 | 3039 | (64.56%) | -20 | (-0.42%) |
| Asturias | 484 | 318 | (65.70%) | -2 | (-0.41%) |
| Cantabria | 575 | 304 | (52.87%) | 0 | (0.00%) |
| Castilla y Leon | 8292 | 4797 | (57.85%) | -12 | (-0.14%) |
| Castilla-La Mancha | 5797 | 1947 | (33.59%) | -6 | (-0.10%) |
| Cataluña | 1950 | 1607 | (82.41%) | 1 | (0.05%) |
| Comunidad de Madrid | 1060 | 707 | (66.70%) | 2 | (0.19%) |
| Comunidad Valenciana | 1956 | 954 | (48.77%) | 11 | (0.56%) |
| Extremadura | 14219 | 6012 | (42.28%) | -37 | (-0.26%) |
| Galicia | 3220 | 1870 | (58.07%) | -25 | (-0.78%) |
| La Rioja | 190 | 74 | (38.83%) | 1 | (0.52%) |
| Navarra | 1019 | 505 | (49.56%) | 0 | (0.00%) |
| Pais Vasco | 252 | 172 | (68.25%) | -1 | (-0.40%) |
| Region de Murcia | 148 | 43 | (29.05%) | 1 | (0.68%) |
