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Power Demand Supplementation
(High Cost Medium Return)

Cogeneration is a distributed energy resource. The installation is usually more than 5 kW and less than 500 kW in a building or medium sized business. In this size range the viability or utilisation factor of the plant is important since it will effect the efficiency and cost effectiveness (payback) of the plant. The utilisation factor is the calculated hours of operation of the plant expressed as a percentage of the total number of hours in a year. If less than 40% then the application is considered to be unviable. To be viable a good baseload for electrical demand and heat demand must exist. Such baseloads arise where building occupation or process activities are extended or continuous in operation. This typically includes for hospitals, prisons, manufacturing processes, swimming pools, airports, hotels, apartment blocks, etc.



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