| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 4576 | (38.04%) | 49 | (0.41%) |
| Aragon | 4707 | 3348 | (71.13%) | -22 | (-0.47%) |
| Asturias | 484 | 264 | (54.55%) | -31 | (-6.40%) |
| Cantabria | 575 | 351 | (61.04%) | 4 | (0.70%) |
| Castilla y Leon | 8292 | 5048 | (60.88%) | -157 | (-1.89%) |
| Castilla-La Mancha | 5797 | 2040 | (35.19%) | 2 | (0.03%) |
| Cataluña | 1950 | 1510 | (77.44%) | -31 | (-1.59%) |
| Comunidad de Madrid | 1060 | 795 | (75.00%) | -3 | (-0.28%) |
| Comunidad Valenciana | 1956 | 1045 | (53.43%) | 12 | (0.61%) |
| Extremadura | 14219 | 5868 | (41.27%) | -88 | (-0.62%) |
| Galicia | 3220 | 2066 | (64.16%) | -178 | (-5.53%) |
| La Rioja | 190 | 86 | (45.13%) | 0 | (0.00%) |
| Navarra | 1019 | 725 | (71.15%) | 17 | (1.67%) |
| Pais Vasco | 252 | 192 | (76.19%) | 2 | (0.79%) |
| Region de Murcia | 148 | 43 | (29.05%) | 0 | (0.00%) |
