| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 5912 | (49.14%) | 12 | (0.10%) |
| Aragon | 4489 | 3803 | (84.72%) | 187 | (4.17%) |
| Asturias | 484 | 387 | (79.96%) | -9 | (-1.86%) |
| Cantabria | 575 | 459 | (79.83%) | 5 | (0.87%) |
| Castilla y Leon | 8292 | 6254 | (75.42%) | 128 | (1.54%) |
| Castilla-La Mancha | 5797 | 2194 | (37.85%) | 76 | (1.31%) |
| Cataluña | 1950 | 1715 | (87.95%) | 50 | (2.56%) |
| Comunidad de Madrid | 1060 | 720 | (67.92%) | 7 | (0.66%) |
| Comunidad Valenciana | 1956 | 1034 | (52.86%) | 47 | (2.40%) |
| Extremadura | 14219 | 7407 | (52.09%) | 108 | (0.76%) |
| Galicia | 3220 | 2673 | (83.01%) | -47 | (-1.46%) |
| La Rioja | 136 | 115 | (84.56%) | 6 | (4.41%) |
| Navarra | 1014 | 888 | (87.57%) | 33 | (3.25%) |
| Pais Vasco | 252 | 210 | (83.33%) | 3 | (1.19%) |
| Region de Murcia | 148 | 70 | (47.30%) | 1 | (0.68%) |
