Renewable-energy certificates (RECs) are traded like gold or silver and form the backbone of the clean-energy industry. Wind- and solar-power plants produce RECs for each unit of electricity they ...

Instead, Energy Vault decided to base its technology on a method developed over 100 years ago, which is widely used to store renewable energy: pumped storage hydropower.During off-peak periods, a ...

This metric reflects the percentage of a state’s total energy use that comes from renewable sources, including hydroelectric power, biomass, geothermal, solar power and wind power. The data is ...

After a long slump, renewable energy stocks have begun to stage a comeback as inflation is starting to ease and the Federal Reserve is poised to cut interest rates in September. The big picture is ...