Long-duration energy storage

Form Energy raises $405M for its 100-hour iron-air batteries

The long-duration energy storage startup has raised a total of $1.2 billion. Form is expanding its West Virginia factory and working on its first deployments now.

By Jeff St. John . 9 October 2024

Form's factory in Weirton, West Virginia. (Form Energy)

Long-duration energy storage

Form Energy set to build world’s biggest battery in Maine

The long-duration storage pioneer won DOE grant money to construct a massive iron-air battery intended to help a strained pocket of the New England grid.

By Julian Spector . 15 August 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
Podcast

What do you do with a 100-hour battery?

Form Energy’s Mateo Jaramillo argues that utilities can use multiday storage to do more than balance intermittent renewables.

Play

By Shayle Kann . 46 min . 14 December 2023
Energy storage

Will this startup finally crack the code on flow battery tech?

Germany's CMBlu just pulled in a 100-million-euro investment, is ramping up manufacturing and has contracts with major utilities. Can it succeed where others have failed?

By Julian Spector . 13 November 2023
Long-duration energy storage

Why Energy Vault went from disrupting batteries to selling them

The buzzy startup raised a record $110M back in 2019 to transform grid storage with novel long-duration tech, but now it's embracing industry favorite lithium-ion.

By Julian Spector . 16 October 2023
Long-duration energy storage

Long-duration storage gets big boost with $325M from DOE

The department selected nine proposals with the goal of accelerating the adoption of emerging technologies, which could be key to cleaning up the grid.

By Julian Spector . 22 September 2023
Long-duration energy storage

Sacramento utility rolls out its first long-duration grid batteries

The municipal utility is tapping flow batteries from ESS for on-demand clean power. The project, ESS’ biggest, will provide an early test of the tech’s potential.

By Julian Spector . 18 September 2023
Long-duration energy storage

Eos wins $400M DOE loan guarantee to build longer-lasting batteries

Long-duration energy storage is a tough business, but it's vital to decarbonizing the grid. Eos thinks its zinc-based batteries are the best candidate for the job.

By Jeff St. John . 31 August 2023
Video

Video: How the Inflation Reduction Act has transformed US clean energy

Watch a conversation on the historic climate law’s impact featuring the Department of Energy’s David Crane and Canary Media’s Julian Spector.

By Julian Spector . 21 August 2023
Long-duration energy storage

Is Azelio's abrupt bankruptcy a bad omen for long-duration energy storage?

Many say long-duration storage is the energy transition's holy grail, but startups in the space are staring down brutally tough market conditions.

By Eric Wesoff . 3 August 2023