Capstone Turbine's theme song could be "My Generation." The company makes the Capstone MicroTurbine, a power-generating system that produces environmentally friendly electricity and heat. The microturbines, which can operate on a stand-alone basis or connected to the utility grid, run on a variety of liquid and gaseous fuels such as natural gas, diesel, kerosene, propane, and flare gases from landfills and sewage plants. Capstone markets its microturbines for use in cogeneration (using both electricity and heat), resource recovery (burning oil and gas production by-products), backup power supply, and remote power applications. Customers located in the US make up about half of sales.