Explainers

Electric vehicles are a cleaner alternative to gasoline- or diesel-powered cars and trucks—both in terms of harmful air pollution, and the greenhouse gas emissions that are causing climate change.

The electric grid is a network of power lines and other infrastructure that moves electricity from power plants to our homes and businesses—and its design affects our options for building a clean energy system.

Energy storage is technology that holds energy at one time so it can be used at another time. Cheap and abundant energy storage is a key challenge for a low-carbon energy system.

Hydrogen is the most abundant chemical substance in the universe. It can be used as a fuel that does not produce greenhouse gases when burned.