| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 2944 | (24.47%) | -45 | (-0.37%) |
| Aragon | 4707 | 1718 | (36.50%) | -67 | (-1.42%) |
| Asturias | 484 | 272 | (56.20%) | -4 | (-0.83%) |
| Cantabria | 575 | 185 | (32.17%) | -9 | (-1.57%) |
| Castilla y Leon | 8292 | 2596 | (31.31%) | -279 | (-3.36%) |
| Castilla-La Mancha | 5797 | 1775 | (30.62%) | -18 | (-0.31%) |
| Cataluña | 1950 | 802 | (41.13%) | -12 | (-0.62%) |
| Comunidad de Madrid | 1060 | 582 | (54.91%) | -11 | (-1.04%) |
| Comunidad Valenciana | 1956 | 1000 | (51.12%) | -18 | (-0.92%) |
| Extremadura | 14456 | 4281 | (29.61%) | -35 | (-0.24%) |
| Galicia | 3220 | 1518 | (47.14%) | -22 | (-0.68%) |
| La Rioja | 190 | 93 | (48.80%) | -1 | (-0.52%) |
| Navarra | 1019 | 298 | (29.24%) | -15 | (-1.47%) |
| Pais Vasco | 252 | 163 | (64.68%) | -3 | (-1.19%) |
| Region de Murcia | 148 | 43 | (29.05%) | -1 | (-0.68%) |
