One day, 100% of electric grid power will come from solar and wind energy

When I talk with groups about solar and wind energy, people ask: “The sun isn’t up all the time and the wind doesn’t blow all the time. How can solar and wind energy power a reliable electric grid?”

About 25 years ago, senior management at a major utility turned down an experimental 8 kilowatt solar project I had proposed because the transmission systems engineers told the CEO that unpredictable solar energy might destabilize the entire utility’s grid. In other words, serious industry professionals claimed to be worried about a solar project representing about 0.00003% of their grid’s capacity...