Solar and Wind Power So Cheap They’re Outgrowing Subsidies
> <i>So until battery systems are cheap enough for generators to stockpile electricity for hours at a time, renewables can’t constantly provide power like coal and gas.</i><p>I thought the solution wasn't expensive batteries locally, but rather storing pumped water in reservoirs, or other solutions like melting and re-solidifying salt, etc. -- huge-scale energy storage connected to the grid. Your energy is produced once from the sun/wind, and then second (at night) from hydroelectric turbines or steam.<p>Anyone know how that's going? Does it have to be done at the city/region grid level, or are there micro-versions that make sense to be integrated with a single wind turbine or field of them?