Energy storage

Solar

Puerto Rico closes $861M DOE loan guarantee for huge solar-battery project

The island has ambitious climate goals and a ton of rooftop solar, but has so far built few large-scale clean energy projects. Project Marahu could change that.

By Akielly Hu . 15 October 2024

Solar panels in Humacao, Puerto Rico. (Lester Jimenez/AFP via Getty Images)

Batteries

Element Energy raises $28M for grid storage powered by used EV batteries

The startup's granular charging controls can get more energy out of second-life batteries while also detecting and preventing failures that could start fires.

By Julian Spector . 14 December 2022
Energy storage

Long-duration storage firm Energy Vault pivots to short-term batteries

The startup pulled in millions for its novel gravity-based storage design, but most of its deal flow these days comes from garden-variety lithium-ion batteries.

By Julian Spector . 18 November 2022
Long-duration energy storage

Long-duration energy storage to get $350M boost from Dept. of Energy

Some say it's the key to unlocking a decarbonized grid. Will a new pot of federal funding be enough to push long-duration storage into the mainstream?

By Julian Spector . 15 November 2022
Sponsored

How EDP Renewables is unlocking solar-plus-storage in rural America

Lining up a roster of talented project partners is the key to making renewables projects work in smaller communities.

By 15 November 2022
Energy storage

Australia to replace coal plant with record-busting 850MW battery

Newcomer Akaysha Energy won backing from investment giant BlackRock and now will build a gargantuan battery in New South Wales.

By Julian Spector . 20 October 2022
Batteries

Can electric buses serve as backup batteries on wheels?

A California pilot project is testing transit buses as a source of mobile backup power. If it works, they could replace dirty diesel generators during blackouts.

By Jeff St. John . 18 October 2022
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