How Is KR 2.3 Tracking?
Sun and wind are inherently intermittent and inconsistent. To make a clean grid as reliable as one run by fossil fuels, we need huge amounts of electricity storage.
Clean electricity must hold up through periods of peak demand and in extreme weather events, including heat waves, hurricanes, and winter storms. To that end, renewable power installations demand short-term, grid-scale electricity storage. Pumped-storage hydropower does well in locales with reservoirs. Batteries, which are readily scalable and can work anywhere, are seeing an expanding role.
To store grid power economically for weeks or months, we’ll need to develop and scale new solutions. Clean hydrogen has high potential here. Affordable longer-term electricity storage is a top R&D priority for grid innovation (KR 9.2).