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)

Energy storage

Cheap clean energy could unleash the power of thermal storage

A growing crop of startups plans to use heat and rocks to tackle some of the hardest decarbonization problems, from chemical production to long-term grid storage.

By Eric Wesoff . 29 February 2024
Energy equity

Free-solo climber Alex Honnold has another mission: Energy equity

The renowned climber translates his passion for heights into high-impact solar projects, powering change one community at a time.

By Maria Virginia Olano . 27 February 2024
Guides and how-tos

Inside my quest for a climate-friendly bank

When I learned that my bank might be investing my money in fossil fuels, I went looking for an alternative. Here's how you can too.

By Pearl Marvell . 21 February 2024
Geothermal

Sage Geosystems raises $17M for geothermal energy storage

The Texas startup is building a commercial system that acts like an earthen battery. The idea is to store energy from wind and solar resources to help balance the grid.

By Maria Gallucci . 15 February 2024
Hydrogen

The $245M bid to pull clean hydrogen straight from the earth

Demand for carbon-free hydrogen is rising. Startup Koloma aims to extract the gas from underground geologic deposits — and it just raised a ton of venture funding.

By Eric Wesoff . 14 February 2024
Climatetech finance

Swell Energy acquires Renu to help build virtual power plants

The startup aims to combine privately owned batteries into grid resources. Renu, a regional battery installer, will help Swell access new markets.

By Eric Wesoff . 7 February 2024
Carbon capture

Avnos raises $36M to pull CO2 — and water — from the sky

The investment round, led by a subsidiary of utility giant NextEra, comes as both private and public interest in direct air capture technology picks up.

By Maria Gallucci . 6 February 2024
EV charging

New guidance makes EV charging incentives widely available

But developers are still awaiting clarity around another key aspect of the tax credit, without which project financials remain murky.

By Jeff St. John . 24 January 2024
EV charging

3 ways to help EV charging bloom in 'charging deserts'

For EV chargers to take off in disadvantaged communities, we'll need public-sector support — and private-sector innovation to make the economics work.

By Jeff St. John . 10 January 2024
Hydrogen

The new hydrogen tax credits could revolutionize how clean energy is counted

Green hydrogen is just the first sector that will need to start tracking clean power on an hourly basis to adapt to a renewables-rich grid, energy experts say.

By Jeff St. John . 9 January 2024