This same process can be utilized to artificially manufacture methane from manure, sewage, garbage and plant residues. It is the dominant energy source for home heating in the United States and is also widely used by electric companies for power generation. Fifty-three percent of the nation's existing homes use natural gas heat and nearly 65 percent of new homes are built to use natural gas. When natural gas is burned, it produces mostly carbon dioxide and water vapor. Compared with other fossil fuels, natural gas emits the least amount of carbon dioxide as it is used, making it the cleanest-burning fossil fuel.
Natural gas is one of the best energy values per dollar.
Homes that are heated by natural gas are more efficient than those heated by electricity, propane or oil. Natural gas appliances can cost less than half as much to operate. Homes with natural gas heat and appliances sell faster. With natural gas, there's no missed oil deliveries, messy storage tanks or the chance of a costly oil spill. Natural gas is abundant in North America and can be created artificially-making it a viable alternative to imported oil.