Courtesy of Gravitricity Abandoned coal mines are becoming the batteries of the future. F rom Europe to North America, an energy revolution is breathing new life into empty, long-forgotten coal ...

Plus Power’s Kapolei battery is officially online. The pioneering project is a leading example of how to shift crucial grid functions from fossil-fueled plants to clean energy.

Wyoming's first new coal mine in 50 years is said to be opening soon but it won't rely on the fossil fuel to make money.

So far, most of these batteries are lithium-ion, similar to the ones in a phone, laptop or electric car. Because they’re already built in bulk for other industries, they’ve become the default ...

Daimler, through its subsidiary Mercedes-Benz Energy and with partners, is turning a coal power plant into a large energy storage facility using over a thousand modules from its electric car ...

In 2011 the International Energy Agency (IEA) saw potential for a "golden age of gas". Four years on, cheap coal still stands in the way, and new power storage technology is making renewables a ...

Reasons to be Cheerful explains how "gravity batteries" are giving former mines a second life—while offering an economic and environmental boost to communities once reliant on coal.