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Guides

Your Guide to the Clean Energy Revolution

Explaining solar, wind, and clean energy breakthroughs, and how they impact your life.

Rooftop solar panels on a brick house

Buying Guides

No BS energy products that help keep the lights on

Topics

Solar

Rooftop panels and utility-scale solar farms.

8 articles

Wind

Why wind turbines keep getting bigger, on land and at sea.

5 articles

Nuclear

How safe reactors are, and what the new designs promise.

4 articles

Grid & storage

How power gets from the plant to your plug.

12 articles

Oil & gas

Oil and gas, from the wellhead to the pump.

12 articles

Climate & policy

The science of warming and the treaties that followed.

11 articles

Home energy

Backup power and a warmer, cheaper house.

11 articles

New fuels & tech

Electric cars, hydrogen, biofuels and carbon capture.

10 articles

Recently updated

All articles
An ethanol production plant with grain storage silos in Minnesota

Updated

Biofuels explained through ethanol, biodiesel and renewable diesel

Ethanol, biodiesel and renewable diesel are three different products made three different ways. Ethanol comes from fermenting starch or sugar. Biodiesel comes from a chemical swap called transesterification, and renewable diesel comes from a refinery process called hydrotreating that produces a fuel nearly identical to petroleum diesel.
A wind turbine standing beside rows of solar panels on open farmland

Updated

How to stop global warming by cutting emissions to net zero

Stopping global warming means cutting greenhouse gas emissions to net zero, and the IPCC's 1.5°C pathways reach net zero CO2 in the…
A logging truck loaded with cut tree trunks at a harvested forest site

Updated

Is biomass renewable? Yes, when regrowth keeps pace with harvest

Yes, biomass counts as renewable energy as long as it's harvested no faster than plants regrow, and US timberland met that test…
The spillway and powerhouse of Grand Coulee Dam on the Columbia River in Washington

Updated

Hydropower is electricity made from moving water

Hydropower is electricity made by letting falling or flowing water spin a turbine, and it supplied about 14% of the world's electricity…
The Belchatow coal power plant in Poland, with two tall striped chimneys and steaming cooling towers

Updated

Carbon emissions by country, with China well ahead of the US and India

China emitted 12.3 billion tonnes of fossil carbon dioxide in 2024, out of a world total of 38.6 billion tonnes, according to…
Nesjavellir geothermal power station in Iceland with steam rising from its plant buildings

Updated

How geothermal energy works, and why EGS is finally taking off

A geothermal power plant makes electricity by pulling heat out of the ground and using it to spin a turbine, the same basic principle behind a coal or gas plant, minus the fuel and the smokestack.