| Comunidad | Capacidad | Embalsada | Variacion | ||
| Alava | 223 | 173 | (77.58%) | 18 | (8.07%) |
| Albacete | 727 | 162 | (22.28%) | -1 | (-0.14%) |
| Alicante | 315 | 101 | (32.06%) | 0 | (0.00%) |
| Almeria | 224 | 28 | (12.50%) | -2 | (-0.89%) |
| Asturias | 484 | 388 | (80.17%) | 77 | (15.91%) |
| Avila | 290 | 36 | (12.41%) | -1 | (-0.34%) |
| Badajoz | 7592 | 2778 | (36.59%) | -6 | (-0.08%) |
| Barcelona | 274 | 179 | (65.33%) | 2 | (0.73%) |
| Burgos | 139 | 89 | (64.03%) | 3 | (2.16%) |
| Caceres | 6627 | 2670 | (40.29%) | 22 | (0.33%) |
| Cadiz | 1821 | 819 | (44.98%) | -5 | (-0.27%) |
| Cantabria | 575 | 316 | (54.96%) | 29 | (5.04%) |
| Castellon | 221 | 89 | (40.27%) | -1 | (-0.45%) |
| Ciudad Real | 510 | 184 | (36.08%) | -1 | (-0.20%) |
| Cordoba | 3411 | 988 | (28.97%) | 3 | (0.09%) |
| Cuenca | 1134 | 351 | (30.95%) | -1 | (-0.09%) |
| Girona | 294 | 143 | (48.64%) | -3 | (-1.02%) |
| Granada | 1181 | 513 | (43.44%) | 7 | (0.59%) |
| Guadalajara | 2975 | 658 | (22.12%) | 6 | (0.20%) |
| Guipuzcoa | 29 | 25 | (86.21%) | 3 | (10.34%) |
| Huelva | 1508 | 754 | (50.00%) | -6 | (-0.40%) |
| Huesca | 2401 | 1220 | (50.81%) | 9 | (0.37%) |
| Jaen | 2327 | 719 | (30.90%) | 8 | (0.34%) |
| La Coruña | 359 | 310 | (86.35%) | 46 | (12.81%) |
| La Rioja | 136 | 47 | (34.56%) | 3 | (2.21%) |
| Leon | 1772 | 841 | (47.46%) | 137 | (7.73%) |
| Lleida | 1145 | 677 | (59.13%) | 11 | (0.96%) |
| Lugo | 895 | 684 | (76.42%) | 107 | (11.96%) |
| Madrid | 1060 | 490 | (46.23%) | 5 | (0.47%) |
| Malaga | 616 | 332 | (53.90%) | -3 | (-0.49%) |
| Murcia | 148 | 57 | (38.51%) | -1 | (-0.68%) |
| Navarra | 1014 | 509 | (50.20%) | 64 | (6.31%) |
| Orense | 1603 | 1059 | (66.06%) | 43 | (2.68%) |
| Palencia | 488 | 130 | (26.64%) | 18 | (3.69%) |
| Pontevedra | 363 | 312 | (85.95%) | 30 | (8.26%) |
| Salamanca | 3482 | 1540 | (44.23%) | -5 | (-0.14%) |
| Segovia | 81 | 48 | (58.97%) | 2 | (2.46%) |
| Sevilla | 942 | 472 | (50.11%) | -1 | (-0.11%) |
| Soria | 267 | 144 | (53.93%) | 2 | (0.75%) |
| Tarragona | 237 | 215 | (90.72%) | -2 | (-0.84%) |
| Teruel | 183 | 96 | (52.46%) | 1 | (0.55%) |
| Toledo | 451 | 165 | (36.59%) | -1 | (-0.22%) |
| Valencia | 1420 | 519 | (36.55%) | 0 | (0.00%) |
| Valladolid | 6 | 6 | (100.00%) | 0 | (0.00%) |
| Zamora | 1767 | 877 | (49.63%) | 63 | (3.57%) |
| Zaragoza | 1905 | 1338 | (70.24%) | 329 | (17.27%) |
