Methane, farmers can convert it to energy to run the farm and power equipment, municipalities can harnes the power from their sewage treatment plants and landfill sites.
Methane hydrates can be found in the arctic, on the ocean floor in coal mines.
Bar owners could give free chilli and nacho's with beer purchase to harnes the power to run the beer coolers and power the lights by having gas collectors at ceiling level

Heck I could power my house if I could just harness the POWER
