High levels of renewable power, however, would require either oversized systems for which there is insufficient space or funding; backup diesel generation, which is expensive and dirty; or energy storage.
Mataas na antas ng Renewable kapangyarihan, gayunpaman, ay mangangailangan ng alinman sa mga oversized na system para sa kung saan doon ay hindi sapat na espasyo o pagpopondo; backup diesel henerasyon, na kung saan ay mura at marumi; o enerhiya imbakan.