Combined Heat & Power Overview and FAQ

Combined heat and power (CHP), also known as cogeneration, is an efficient and clean approach to generating electric power and useful thermal energy (heating and/or cooling) from a single fuel source. CHP is a simple approach to reducing energy costs, boosting the global competitiveness of our manufacturers, boosting economic development in our local communities, reducing harmful emissions, and improving the resiliency and security of our energy infrastructure.
See our below FAQ for more.

What is CHP?

Why is CHP so efficient?

How does this compare to separate electricity and heat?

What does CHP convert the waste energy into?

How much CHP do we have in the U.S?

Where is CHP installed?

What types of businesses use CHP?

What are the benefits of CHP for businesses and factories?

What are the benefits of CHP for the nation?

What are the benefits of CHP for electric utilities?

What fuel is used for CHP?

What size is CHP?

What technologies are used in CHP?

What makes a “good” economic CHP project?

Does CHP save money?

Is CHP environmentally friendly? How do the emissions compare?

The increase in fuel use efficiency of CHP, combined with the use of lower carbon fuels such as natural gas, translates into reductions in smog-forming emissions and climate change emissions compared to separate heat and power. The table below compares the annual energy and CO2 savings of a 10-megawatt natural gas-fired CHP system with separate heat and power from utility-scale generation sources, including renewables.

This shows that CHP can provide overall energy and CO2 savings on par with comparably sized solar photovoltaics (PV), wind, and natural gas combined cycle, and at a capital cost that is lower than solar and wind and on par with natural gas combined cycle plants.

















Compared to the average fossil-based electricity generation, the entire existing base of CHP saves 1.8 Quads of energy annually and eliminates 240 million metric tons of CO2 emissions each year (equivalent to the emissions of over 40 million cars).