Combined Heat and Power

Combined Heat and Power (CHP), also known as co-generation refers to the process of capturing the heat generated as a by-product of electricity generation for use elsewhere. By using heat that would otherwise be wasted, CHP can provide a resource that would otherwise require a conventional boiler.

In doing so, CHP can deliver a significant reduction in resultant emissions as well as offering savings on heating bills. CHP is generally seen as highly efficient, with an overall efficiency rating of around 80%. This can translate in a reduction of energy bills of around 20% for the average end-user.

While CHP is fuel neutral, meaning it can be applied to both renewable and non-renewable fuels, most Behind the Meter CHP equipment utilises gas. Therefore, while CHP delivers a significant boost to energy efficiency and subsequent improvements in carbon reduction, it is not true green energy solution.

As part of a wider microgrid, CHP plants may be able to offer the ability to run a site in island mode in the event that grid supply is disrupted. However, it is important to consider that CHP is not instantaneous and requires time to switch into island mode effectively. In the event of a sudden drop in power, it may be that your CHP doesn’t have the time to switch over unless it is supported with an additional source of emergency power, such as a battery energy storage system.