Clean energy

Climatetech finance

UK’s Octopus Energy raises $800M to expand global clean energy push

The clean power provider is now worth nearly $8 billion and has plans to ramp up heat-pump manufacturing and move into overseas markets.

By Julian Spector . 19 December 2023
Geothermal

Harnessing the heat beneath our feet: Geothermal's past and future

It's been a niche power source for over a century, but advanced techniques drawn from the oil and gas industry could help geothermal energy hit the mainstream.

By Michael Thomas . 14 December 2023
Climatetech finance

Chart: How much are oil and gas firms spending on clean energy? Not much

Fossil fuel companies accounted for just 1% of global climatetech funding last year — while continuing to invest lavishly in their planet-warming products.

By Maria Virginia Olano . 1 December 2023
Podcast

How to triple renewables by 2030

We tackle the on-the-ground reality of developing 11 terawatts of renewable capacity.

Play

By Stephen Lacey . 64 min . 30 November 2023
Geothermal

America's first 'enhanced' geothermal plant just got up and running

Next-generation geothermal could be a huge source of carbon-free power. A first-of-a-kind project from Google and Fervo Energy is a step in that direction.

By Maria Gallucci . 28 November 2023
Transmission

California's grid is hindering its climate goals. Can a new law fix it?

The state's grid isn't growing fast enough to support a surge of EVs, heat pumps and more. A new law offers a potential path forward — and could be a model for other states.

By Jeff St. John . 20 November 2023
Podcast

The impact of AI: Solar forecasting, EVs and virtual power plants

We explore a few areas where artificial intelligence is bringing real benefits to grid operators and customers.

Play

By Stephen Lacey . 63 min . 17 November 2023
Clean energy

Portugal just ran on 100% renewables for six days in a row

For nearly a week, the country of 10 million met customer needs with wind, hydro and solar — a test run for operating the grid without fossil fuels.

By Julian Spector . 15 November 2023
Transmission

It's hard to connect clean power to the grid. New software can help

Startups Nira Energy and Pearl Street Technologies are helping clean-energy developers find rare openings on crowded grids, faster.

By Jeff St. John . 13 November 2023
Climatetech finance

Chart: Clean energy attracting nearly twice as much investment as fossils

But for the world to meet its climate goals, the money needs to stop flowing to fossil fuels — and flow even faster into clean energy.

By Dan McCarthy . 10 November 2023