Across state capitals and in Washington, policymakers are scrambling to address voters’ alarm over electricity bills. The Trump administration is unwinding major climate regulations, Democrats are focusing more on affordability concerns than climate change, and governors are quietly paring back clean energy subsidies and emissions mandates they championed only a few years ago. Climate policies are starting to bite, and the political strategy that helped enact them, downplaying costs and obscuring tradeoffs, is becoming harder to sustain as ratepayers see the impact on their bills.