Energy storage

Tesla’s battery business is booming

Though its EV business is contracting, the company’s energy storage segment is growing fast, helping it reap the benefits of surging demand for batteries.

By Dan McCarthy . 24 July 2024

Batteries

Finally, a way to tell how clean grid batteries actually are

Batteries can’t distinguish between clean and dirty electrons — a complication for transitioning grids. A Texas battery project shows how software and standards can help.

By Jeff St. John . 18 March 2024
Energy storage

Cheap clean energy could unleash the power of thermal storage

A growing crop of startups plans to use heat and rocks to tackle some of the hardest decarbonization problems, from chemical production to long-term grid storage.

By Eric Wesoff . 29 February 2024
Energy storage

Texas will add more grid batteries than any other state in 2024

With cheap land and a competitive market irresistible to energy storage developers, the Lone Star State will even overtake California in battery deployments this year.

By Julian Spector . 26 February 2024
Clean energy

Chart: Nearly all new US power plants built in 2024 will be clean energy

Renewables, batteries and nuclear will add up to 96% of all new power capacity constructed this year, per federal data.

By Julian Spector, Maria Virginia Olano . 23 February 2024
Solar

The biggest solar-plus-storage project in the US just came online

The new California installation has nearly 2 million solar panels, more than 120,000 batteries, and an enormous amount of clean energy capacity.

By Eric Wesoff . 25 January 2024
Energy storage

Long wary of batteries, New York's now poised to go big on energy storage

Can community-scale battery installations hit the sweet spot for the country’s densest city? NineDot Energy has raised $225 million more to take a crack at it.

By Jeff St. John . 22 January 2024
Energy storage

Hawaii used rooftop solar to shore up the grid. New rules threaten that

A nation-leading virtual power plant program helped keep the lights on when Oahu's coal plant shut down. But rule changes may drive away future customers, advocates say.

By Julian Spector . 18 January 2024
Energy storage

Chart: The US grid battery fleet is about to double — again

America's energy storage industry is on a tear, installing batteries to store clean wind and solar and make the grid more reliable.

By Julian Spector, Maria Virginia Olano . 12 January 2024
Energy storage

A huge battery has replaced Hawaii's last coal plant

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.

By Julian Spector . 10 January 2024
Clean energy manufacturing

Clean energy factories, thermal storage get boost from new tax credits

The IRS just released rules on incentives for clean energy manufacturers that make stuff in the U.S. Long-duration storage and thermal batteries could benefit the most.

By Julian Spector . 15 December 2023