Finland has seven combined heat and power plants that use coal either as the main or backup fuel for homes and businesses.
芬兰有7座热电联产电厂,使用煤炭作为家庭和企业的主要或备用燃料。
英语百科
Cogeneration
Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Trigeneration or combined cooling, heat and power (CCHP) refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a fuel or a solar heat collector.