Climatetech finance

Clean aluminum

Sortera raises $45M for recycling tech as US demands low-carbon aluminum

The Indiana startup, which uses AI to extract high-value aluminum from scrap piles, just announced fresh funding and plans for a second plant in Tennessee.

By Maria Gallucci . 20 November 2025
Energy storage

This startup wants to build pumped hydro storage in the ocean

Sizable Energy raised $8M to build a demonstration plant that stores energy for long durations by pumping brine between inflatable reservoirs in the sea.

By Julian Spector . 10 November 2025
Batteries

The startup trying to make ‘DIY’ home batteries happen

Pila Energy’s batteries offer renters and homeowners the smarts of a Tesla Powerwall in a plug-and-play package. It just raised $4M to scale up operations.

By Jeff St. John . 21 October 2025
Batteries

Base Power hauls in $1B for mass deployment of huge home batteries

It’s a standout fundraise for the current cleantech market. The Texas startup will use the money to beef up manufacturing and install batteries even faster.

By Julian Spector . 9 October 2025
EV charging

EV Realty lands $75M to expand electric truck charging in California

The startup has four mega-charging sites planned in the state, and says the underlying economics of electric freight hauling can withstand federal policy reversals.

By Jeff St. John . 18 September 2025
Nuclear

Commonwealth Fusion raises nearly $1B to chase commercial fusion power

The MIT spinout also has a deal with Google to start producing power in the 2030s, the latest sign of soaring interest in the nuclear technology.

By Maria Gallucci . 28 August 2025
Offshore wind

‘Come to America and lose $1B’: Trump drives more offshore wind pain

Ørsted is seeking $9.4B to finish two U.S. projects, the latest in a spate of setbacks for foreign firms invested heavily in the struggling sector.

By Clare Fieseler . 19 August 2025
Energy storage

Powin fueled the US grid storage boom. Then the company crashed.

The Oregon-based battery firm filed for bankruptcy this summer, jeopardizing its 11.3 gigawatt-hours of storage projects installed around the world.

By Julian Spector . 24 July 2025
Clean energy manufacturing

US solar manufacturers face steeper hill despite some wins in budget law

Manufacturing incentives survived in the GOP budget law, but solar factories will have to navigate subdued demand and detailed new anti-China rules.

By Julian Spector . 17 July 2025
Clean energy

A cheat sheet to clean-energy tax credit changes under Trump’s new law

A whole bunch of incentives will be gone much sooner than expected. Here’s what you need to know.

By Ysabelle Kempe . 14 July 2025