Climate TechBook

Greenhouse gas emissions come from diverse sources across the economy. The magnitude of emissions and diversity of sources means that no single technology, policy, or behavioral change will be able to “solve” climate change. Rather, a portfolio of solutions is needed. A wide range of technologies already exist, or are currently under development, to facilitate greenhouse gas emission reductions.  

Emissions by Sector

This chart shows the percent of greenhouse gas emissions from each of the five key economic sectors in the United States. Greenhouse gas emissions data come from the U.S. Environmental Protection Agency’s Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2007. Click on a sector to learn more about the emissions from that sector, as well as the technologies that can help lower emissions.

Technologies by Sector

Select a technology to learn more about how it works, how it can reduce greenhouse gas emissions, and what policy options exist to help promote it. Note that certain technologies can play a key role in more than one sector.