Modern energy use is becoming more flexible. People no longer need batteries only for cars, flashlights, or small backup ...

Rows of cabinets containing lithium ion batteries supplied by Fluence, a Siemens and AES Company, are seen inside the AES Alamitos Battery Energy Storage System, which provides stored renewable energy ...

Scientists at UC Santa Barbara have created a remarkable new material that works like a “rechargeable solar battery,” storing sunlight inside tiny molecules and releasing it later as heat — even long ...