| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12035 | 7113 | (59.10%) | 4 | (0.03%) |
| Aragon | 4489 | 3635 | (80.98%) | 21 | (0.47%) |
| Asturias | 484 | 381 | (78.72%) | -12 | (-2.48%) |
| Cantabria | 575 | 520 | (90.43%) | -5 | (-0.87%) |
| Castilla y Leon | 8292 | 4872 | (58.75%) | 141 | (1.70%) |
| Castilla-La Mancha | 5753 | 2099 | (36.49%) | 13 | (0.23%) |
| Cataluña | 1950 | 1470 | (75.38%) | -12 | (-0.62%) |
| Comunidad de Madrid | 1060 | 755 | (71.23%) | -1 | (-0.09%) |
| Comunidad Valenciana | 2447 | 851 | (34.78%) | 8 | (0.33%) |
| Extremadura | 14219 | 7780 | (54.72%) | 29 | (0.20%) |
| Galicia | 3220 | 2294 | (71.24%) | 18 | (0.56%) |
| La Rioja | 136 | 95 | (69.85%) | 4 | (2.94%) |
| Navarra | 1014 | 695 | (68.54%) | 22 | (2.17%) |
| Pais Vasco | 252 | 207 | (82.14%) | 0 | (0.00%) |
| Region de Murcia | 148 | 34 | (22.97%) | 0 | (0.00%) |
