Smart grids smoothing energy supply would yield large savings
Continental scale deployment of Wind and Solar renewable energy (WS) connected by a ‘smart grid’ could smooth out most of the fluctuations or intermittency of individual and local supply and replace most fossil energy. Such a smart grid requires major investment, in addition to WS generating capacity, but combined with other, complementary investment including energy efficiency would result in very large energy savings compared to current wasteful use of mainly fossil energy supply.