Climatetech finance

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)

Solar

Perovskites can make solar panels more efficient than silicon alone

But will their remarkable performance in the lab ever translate into real market momentum? Caelux and other tandem-solar startups are betting the answer is yes.

By Eric Wesoff . 19 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
Solar

Ojjo aims to cut solar project costs with better foundation for panels

The steel-truss startup just raised another $40 million and landed the biggest solar-storage project in the U.S. as a client.

By Julian Spector . 30 September 2022
Clean energy

6 clean energy companies that are ramping up US manufacturing

The Inflation Reduction Act provides billions of dollars in tax credits and loans, helping to spur investment in domestic production.

By Shel Evergreen . 21 September 2022
EV charging

Terawatt Infrastructure snags $1B for EV charging buildout

The newly minted cleantech unicorn has big plans to roll out charging depots for electric cars and trucks across the U.S.

By Jeff St. John . 13 September 2022
Batteries

Lunar Energy enters solar+battery field with $300M investment

Sunrun, SK Group and others back the startup's plan to break into a crowded market with integrated home battery systems and broader energy controls.

By Jeff St. John . 26 August 2022
Climatetech finance

How a new national green bank could steer $27B to clean energy projects

The Inflation Reduction Act's seed funding could spur 10× as much in private-sector lending for community solar, efficiency and more in underserved neighborhoods.

By Jeff St. John . 24 August 2022
Geothermal

Advanced geothermal heats up with $138M round for startup Fervo Energy

Houston-based Fervo uses drilling techniques from the oil and gas industry to tap heat deep in the Earth and turn it into clean electricity.

By Maria Gallucci . 22 August 2022
Nuclear

Bill Gates' nuclear startup wins $750M, loses sole fuel source

TerraPower notches a record-setting investment round led by South Korea's SK. But it has no supplier of the enriched fuel it needs, now that sourcing from Russia is off the table.

By Eric Wesoff . 18 August 2022
Podcast

Helping early-stage climatetech startups survive the valley of death

The challenges of funding new climatetech solutions.

Play

By Shayle Kann . 14 July 2022