Already 2000 years BC, there were the first discoveries of natural gas in Iran. Around 900 BC, natural gas was discovered in China and put to dry salt. Today, you just put a gas in gas turbine power plants as fuel for motor vehicles and to produce heat, electricity or heat supply.
Investing in natural gas proves to be risky, because the price of natural gas is subject to very strong seasonal fluctuations. For an investment one makes use of special allowances, which track the price of natural gas.