| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 4627 | (38.46%) | -126 | (-1.05%) |
| Aragon | 4707 | 3529 | (74.97%) | -120 | (-2.55%) |
| Asturias | 484 | 406 | (83.88%) | -1 | (-0.21%) |
| Cantabria | 575 | 383 | (66.61%) | -19 | (-3.30%) |
| Castilla y Leon | 8292 | 5642 | (68.04%) | -188 | (-2.27%) |
| Castilla-La Mancha | 5797 | 2428 | (41.88%) | -45 | (-0.78%) |
| Cataluña | 1950 | 1564 | (80.21%) | -48 | (-2.46%) |
| Comunidad de Madrid | 1060 | 802 | (75.66%) | -14 | (-1.32%) |
| Comunidad Valenciana | 1956 | 1102 | (56.34%) | -26 | (-1.33%) |
| Extremadura | 14219 | 5455 | (38.36%) | -294 | (-2.07%) |
| Galicia | 3220 | 1948 | (60.50%) | -59 | (-1.83%) |
| La Rioja | 190 | 132 | (69.27%) | -5 | (-2.62%) |
| Navarra | 1019 | 628 | (61.63%) | -30 | (-2.94%) |
| Pais Vasco | 252 | 188 | (74.60%) | -2 | (-0.79%) |
| Region de Murcia | 148 | 45 | (30.41%) | -1 | (-0.68%) |
