“Cogeneration” captures heat from energy-intensive industrial processes and puts it back to work—to make steam that drives a turbine generator or that heats other parts of the facility, for example. Heat recovery can increase energy efficiency by 30 percent or more. Cogeneration has garnered a lot of attention as a result, and sophisticated, almost turnkey cogeneration solutions are now available in a range of sizes. Even the most sophisticated cogeneration system, however, is an electromechanical system that requires regular maintenance for reliable operation at peak efficiency.