Solar panels and wind turbines give the world bountiful energy—but come with a conundrum. When it’s sunny and windy out, in many places these renewables produce more electricity than is actually ...

Scientists have proposed a new system that uses surplus PV energy in the spring and the autumn to charge up underground thermal energy storage for later use in the summer and winter. They have ...

The rapid buildout of wind and solar power generation has set off a race for experimental technologies to capture and store that energy. Several startups in Houston say they’ve developed ways to cache ...