Month: December 2019

Cheap at Last, Batteries Are Making a Solar Dream Come True

Solar power is increasingly available around the clock as energy storage become more affordable. PHOTOGRAPH: QILAI SHEN/BLOOMBERG/GETTY IMAGES Todd Karin was prepared when California’s largest utility shut off power to millions of people to avoid the risk of wildfires last month. He’s got rooftop solar panels connected to a single Tesla Powerwall in his rural