Rooftop solar and home batteries make a clean grid vastly more affordable

In large, populous nations, the complete reliance on these renewables would require what we are still missing: either mass-scale, long-term (days to weeks) electricity storage that would back up intermittent electricity generation, or extensive grids of high-voltage lines to transmit electricity across time zones and from sunny and windy regions to

... See more

Rooftop solar, battery storage, electric vehicles, and energy management devices are all examples of DERs – numerous pockets of energy spread throughout the grid rather than concentrated in a single spot. Unlike centralized sources of power, DERs can make the grid flexible and enable control of both electricity supply and demand in real-time. Howev... See more