Massive amounts of new wind and solar will be a make-or-break ingredient of a net-zero grid. Solar power generated less than 4 percent of the world’s electricity in 2021; by 2050, solar’s share needs to jump to 33 percent. Wind power produced less than 7 percent of electricity globally last year; by 2050, that needs to grow to 35 percent. So said the International Energy Agency last year when it laid