What is a combined heat and power (CHP) system?

A combined heat and power (CHP) system is designed to simultaneously generate electricity and useful heat from the same energy source. This process is highly efficient because it captures the heat that would typically be wasted in conventional power generation and uses it for heating purposes, such as space heating or hot water production.

The efficiency advantage of CHP systems lies in their ability to utilize the heat that is produced during electricity generation, making them more resource-efficient compared to separate systems that either generate electricity or provide heating. This dual function not only enhances energy utilization but also reduces overall emissions, as less fuel is needed to achieve the same energy outputs when both electricity and heat are produced in tandem.

The other choices describe different energy systems or functions but do not correctly define what a CHP system specifically does.