Combined heat and power (CHP) is an efficient energy system that generates both electricity and useful heat from a single fuel source. This process captures the heat that would typically be wasted during electricity production and uses it for heating purposes, such as in buildings or industrial processes. By utilizing the heat that is usually lost, CHP systems can achieve higher overall energy efficiency compared to traditional power generation methods. This technology can reduce energy costs and lower greenhouse gas emissions, making it a more sustainable option for meeting energy needs in various applications.