Natural gas meets 28 percent of U.S. energy demand (as of 2012).
Natural gas now heats 51 percent of U.S. households. It also cools many homes and provides fuel for cooking.
Because natural gas burns cleaner than gasoline or diesel, many companies and municipalities are deploying fleets of natural gas-powered cars, trucks and buses to reduce emissions. There are approximately 142,000 natural gas vehicles operating on American roads.