| Comunidad | Capacidad | Embalsada | Variacion | ||
| Andalucia | 12030 | 5545 | (46.09%) | -11 | (-0.09%) |
| Aragon | 4707 | 3721 | (79.05%) | -5 | (-0.11%) |
| Asturias | 484 | 374 | (77.27%) | -3 | (-0.62%) |
| Cantabria | 575 | 446 | (77.57%) | 2 | (0.35%) |
| Castilla y Leon | 8292 | 6559 | (79.10%) | -102 | (-1.23%) |
| Castilla-La Mancha | 5797 | 2635 | (45.45%) | -1 | (-0.02%) |
| Cataluña | 1950 | 1553 | (79.64%) | -15 | (-0.77%) |
| Comunidad de Madrid | 1060 | 885 | (83.49%) | 0 | (0.00%) |
| Comunidad Valenciana | 1956 | 1194 | (61.04%) | 8 | (0.41%) |
| Extremadura | 14219 | 7957 | (55.96%) | -197 | (-1.39%) |
| Galicia | 3220 | 2403 | (74.63%) | -97 | (-3.01%) |
| La Rioja | 190 | 132 | (69.27%) | -1 | (-0.52%) |
| Navarra | 1019 | 798 | (78.31%) | -10 | (-0.98%) |
| Pais Vasco | 252 | 210 | (83.33%) | -2 | (-0.79%) |
| Region de Murcia | 148 | 46 | (31.08%) | 1 | (0.68%) |
