Climatetech finance

Batteries

Battery recycling still isn’t easy. Just ask Ascend Elements.

The startup’s recent bankruptcy filing speaks to the larger headwinds facing American battery recyclers as automakers scale back EV plans.

By Julian Spector, Kathryn Krawczyk . 17 April 2026
Green steel

Stegra lands funding to complete world’s first major green-steel mill

The company said it secured 1.4 billion euros to rescue its financially troubled steel mill, which will use green hydrogen to make metal in northern Sweden.

By Maria Gallucci . 14 April 2026
Clean industry

Clean cement startup Sublime cuts jobs after Trump pulled funding

Sublime Systems lays off two-thirds of its staff months after pausing work on a planned Massachusetts factory, following the loss of an $87 million federal grant.

By Maria Gallucci . 12 March 2026
Climatetech finance

Span looks to cut smart panel costs with $75M Eaton partnership

The leading U.S. smart-panel startup and the global electrical-equipment giant team up on digital controls for home batteries, EV chargers, and electric appliances.

By Jeff St. John . 9 March 2026
Clean energy manufacturing

Metal powders help fuel rockets. Now they could heat up factories, too.

Dutch startup Renewable Iron Fuel Technology burns iron powder in boilers to make carbon-free heat. The firm just raised $131 million to commercialize its tech.

By Maria Gallucci . 9 March 2026
Climatetech finance

Heron Power raises $140M to modernize electrical transformers

Transformers are an old technology that’s in short supply. Tesla alum Drew Baglino thinks his startup can help meet rising demand with new solid-state hardware.

By Jeff St. John . 18 February 2026
Climatetech finance

Lunar Energy lands $232M to boost smart home batteries

The Silicon Valley startup wants to enter new markets, like Texas, and enroll more customers in virtual power plants that make the grid more reliable and affordable.

By Jeff St. John . 4 February 2026
Heat pumps

Startup Jetson raises $50M to deploy affordable heat pumps

The vertically integrated company says it can install heat pumps at half the costs of competitors. Now, Jetson plans to expand product offerings and service areas.

By Alison F. Takemura . 23 January 2026
Geothermal

Fervo nabs $462M to complete massive next-gen geothermal project

The Houston startup is part of a growing push to harness geothermal energy with new technologies. The funding will help Fervo finish its flagship Utah plant.

By Maria Gallucci . 10 December 2025
Solar

Connecticut’s pioneering model for publicly owned, small-scale solar

The Connecticut Green Bank goes beyond grants and loans to directly develop solar for towns and schools — a model other states could follow as energy costs rise.

By Jeff St. John . 26 November 2025