Energy storage

Solar

How to make sure your solar-plus-battery system works in a blackout

After disasters like Hurricane Fiona, solar panels and batteries can be a lifeline. Energy experts offer some do's and don'ts to help make the most of backup systems during outages.

By Maria Gallucci . 17 October 2022
Batteries

Hawaii is paying home-battery owners to help the grid. How's that going?

Hawaii's main utility reached a deal with pro-solar groups to reward households for sharing their clean energy. We check in on the results at the six-month mark.

By Julian Spector . 6 October 2022
Long-duration energy storage

Form Energy wins $450M to rust iron for multiday energy storage

The long-duration storage startup is on a fundraising tear as it validates its iron-air battery technology and scouts locations for a U.S. factory.

By Julian Spector . 4 October 2022
Energy storage

Tesla grid battery fire shows young industry's failures and successes

The latest fire at California's Moss Landing battery complex was contained and didn't cause any injuries, but it still highlights the need for better safety systems at storage facilities.

By Julian Spector . 28 September 2022
Solar

Manhattan's largest rooftop solar array is about to come online

Developer Siemens overcame design obstacles to build the Javits Center rooftop solar system, which also includes a 3.5-megawatt indoor battery.

By Maria Gallucci . 28 September 2022
Energy storage

ESS inks largest-ever US flow battery purchase with Sacramento utility

The innovative deal will supply 2 gigawatt-hours of storage over multiple years and includes provisions for workforce training in and around the California capital.

By Julian Spector . 27 September 2022
Batteries

In Utah, thousands of homes feed the grid stored solar power

Utility Rocky Mountain Power teamed with sonnen to set up a virtual power plant that's thriving. Now it plans to expand the model across Utah and Idaho.

By Julian Spector . 14 September 2022
Solar

Hawaii's biggest solar+battery plant comes online — just in time

Despite supply-chain hurdles and other hiccups, developer Clearway Energy was able to get the solar-and-storage facility running before Oahu's last coal plant closes.

By Julian Spector . 15 August 2022
Energy storage

Energy storage wins a long-sought victory with Inflation Reduction Act

A dedicated grid-storage tax credit will unleash a new wave of development for technologies critical to meeting U.S. climate goals.

By Julian Spector . 12 August 2022
Energy storage

Grid energy storage is still pulling in big bucks, recession be damned

Three recent deals showcase investor confidence in the long-term growth of the battery storage market despite near-term turbulence elsewhere in the economy.

By Julian Spector . 26 July 2022