By Pete Danko, Breaking Energy.

Fuel cell proponents like to talk about how the devices can use biogas to create zero-carbon power, but that actually doesn’t happen very often. Typically, natural gas is the fuel that feeds the electrochemical process.

Not so at the Microsoft Data Plant in Cheyenne, Wyoming, however. This data center was built alongside a wastewater treatment plant, where anaerobic digesters break down you-know-what to produce the gas that feeds the fuel cells that keep the electronics humming.