| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 6153 | (51.15%) | -4 | (-0.03%) |
| Aragon | 4489 | 4100 | (91.33%) | 32 | (0.71%) |
| Asturias | 484 | 430 | (88.84%) | -5 | (-1.03%) |
| Cantabria | 575 | 514 | (89.39%) | 0 | (0.00%) |
| Castilla y Leon | 8292 | 7275 | (87.73%) | 10 | (0.12%) |
| Castilla-La Mancha | 5797 | 2525 | (43.56%) | 4 | (0.07%) |
| Cataluña | 1950 | 1822 | (93.44%) | 14 | (0.72%) |
| Comunidad de Madrid | 1060 | 869 | (81.98%) | 4 | (0.38%) |
| Comunidad Valenciana | 1956 | 1228 | (62.78%) | -2 | (-0.10%) |
| Extremadura | 14219 | 8345 | (58.69%) | 29 | (0.20%) |
| Galicia | 3220 | 2757 | (85.62%) | 7 | (0.22%) |
| La Rioja | 136 | 127 | (93.38%) | 0 | (0.00%) |
| Navarra | 1014 | 928 | (91.52%) | -7 | (-0.69%) |
| Pais Vasco | 252 | 213 | (84.52%) | -1 | (-0.40%) |
| Region de Murcia | 148 | 75 | (50.68%) | 0 | (0.00%) |
