Tough and durable, with this generator customers can save up to 15 percent annually on fuel costs and improve profitability. The CG132-12 CHP system is highly efficient with an optimized camshaft, combustion chamber, and spark plugs. Optimized engine components mean the CG132 CHP system uses up to 50 percent less lubricating oil than competing units and uses nearly 50 percent less space than similar systems.