CHP is an efficient and reliable approach to generating power and thermal energy from a single fuel source that offers energy and environmental benefits over electric-only and thermal-only systems in both central and distributed power generation applications. CHP systems consist of a number of individual components, prime mover, electric generator, heat recovery, and electrical interconnection that are configured into an integrated whole. CHP systems achieve typical effective electric efficiencies of 50% to 70% - a significant improvement over the average efficiency of separate heat and power systems. The following websites offer a wide variety of tools, resources, and information.