| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 11941 | 2458 | (20.58%) | -43 | (-0.36%) |
| Aragon | 4751 | 1612 | (33.93%) | 11 | (0.23%) |
| Asturias | 456 | 367 | (80.48%) | -5 | (-1.10%) |
| Cantabria | 575 | 152 | (26.43%) | -4 | (-0.70%) |
| Castilla y Leon | 8292 | 3778 | (45.56%) | -29 | (-0.35%) |
| Castilla-La Mancha | 5803 | 1701 | (29.31%) | -10 | (-0.17%) |
| Cataluña | 1950 | 714 | (36.62%) | -19 | (-0.97%) |
| Comunidad de Madrid | 1060 | 539 | (50.85%) | 2 | (0.19%) |
| Comunidad Valenciana | 1956 | 832 | (42.54%) | 4 | (0.20%) |
| Extremadura | 14456 | 5797 | (40.10%) | 12 | (0.08%) |
| Galicia | 3220 | 1972 | (61.24%) | -18 | (-0.56%) |
| La Rioja | 190 | 64 | (33.58%) | -3 | (-1.57%) |
| Navarra | 1019 | 439 | (43.08%) | -8 | (-0.79%) |
| Pais Vasco | 252 | 155 | (61.51%) | -2 | (-0.79%) |
| Region de Murcia | 148 | 43 | (29.05%) | 1 | (0.68%) |
