| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 3822 | (31.77%) | -28 | (-0.23%) |
| Aragon | 4707 | 2644 | (56.17%) | -19 | (-0.40%) |
| Asturias | 484 | 302 | (62.40%) | -24 | (-4.96%) |
| Cantabria | 575 | 237 | (41.22%) | -7 | (-1.22%) |
| Castilla y Leon | 8292 | 3765 | (45.40%) | -94 | (-1.13%) |
| Castilla-La Mancha | 5797 | 2087 | (36.00%) | -14 | (-0.24%) |
| Cataluña | 1950 | 1218 | (62.46%) | -31 | (-1.59%) |
| Comunidad de Madrid | 1060 | 709 | (66.89%) | -3 | (-0.28%) |
| Comunidad Valenciana | 1956 | 939 | (48.01%) | -9 | (-0.46%) |
| Extremadura | 14219 | 4820 | (33.90%) | 39 | (0.27%) |
| Galicia | 3220 | 1467 | (45.56%) | -10 | (-0.31%) |
| La Rioja | 190 | 83 | (43.55%) | -3 | (-1.57%) |
| Navarra | 1019 | 358 | (35.13%) | -15 | (-1.47%) |
| Pais Vasco | 252 | 160 | (63.49%) | -2 | (-0.79%) |
| Region de Murcia | 148 | 35 | (23.65%) | -2 | (-1.35%) |
