California's grid operator, the California Independent System Operator (CAOS), recorded a 24 percent increase in peak demand of 35,000 megawatts on Thursday, highlighting the strain on the state's electricity system during a record-breaking winter heat wave. McAllister, who led the development of the state’s latest energy code for buildings, is a champion of using electricity-powered climate control systems instead of using natural gas. He also discusses the potential impact of moving away from natural gas on utilities and customers, potentially leaving behind expensive infrastructure that is no longer in use. Mcallister believes that energy efficiency is the "quiet workhorse" of the clean energy transition.