How CHP works is by using the heat that would otherwise be wasted in exhaust gases from fossil
combustion systems, such as
flue gases from a
coal - or biomass - fueled boiler or exhaust from a gas turbine or reciprocating engine, to produce steam and / or hot water for various industrial or commercial needs.
Thus, we neither favor nor oppose so - called «clean
coal,» i.e.,
combustion of
coal with carbon dioxide captured and sequestered from the atmosphere; though we're not bullish on Carbon Capture and Storage in light of the considerable (~ 30 - 40 %) oversizing of generating capacity and
coal throughput required to process
flue gas to safely remove 90 % or more of the CO2.