| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12035 | 6496 | (53.98%) | -41 | (-0.34%) |
| Aragon | 4489 | 2938 | (65.45%) | 1 | (0.02%) |
| Asturias | 484 | 317 | (65.50%) | -6 | (-1.24%) |
| Cantabria | 575 | 432 | (75.13%) | -6 | (-1.04%) |
| Castilla y Leon | 8292 | 4259 | (51.36%) | -78 | (-0.94%) |
| Castilla-La Mancha | 5753 | 1841 | (32.00%) | 0 | (0.00%) |
| Cataluña | 1950 | 1494 | (76.62%) | 32 | (1.64%) |
| Comunidad de Madrid | 1060 | 789 | (74.43%) | -9 | (-0.85%) |
| Comunidad Valenciana | 2447 | 586 | (23.95%) | -2 | (-0.08%) |
| Extremadura | 14219 | 7437 | (52.30%) | -132 | (-0.93%) |
| Galicia | 3220 | 1766 | (54.84%) | -45 | (-1.40%) |
| La Rioja | 136 | 55 | (40.44%) | -2 | (-1.47%) |
| Navarra | 1014 | 394 | (38.86%) | -18 | (-1.78%) |
| Pais Vasco | 252 | 173 | (68.65%) | -2 | (-0.79%) |
| Region de Murcia | 148 | 24 | (16.22%) | 0 | (0.00%) |
