According to the Digest of UK Energy Statistics, published annually by the Department of Energy and Climate Change (DECC), the country saw an increase in combined heat and power (CHP) plants in 2014: a net number of 12 projects added after some existing projects were decommissioned.

Four industrial sectors account for about 79 percent of the CHP electrical capacity – oil refineries (37 percent), chemicals (27 percent), paper and publishing and printing (8 percent) and food, beverages and tobacco (7 percent). The capacity attributable to oil refineries and chemicals fell between 2013 and 2014 due to CHP closures. There were increases in capacity in paper publishing and printing and food, beverages and tobacco. Between 2013 and 2014 there were increases in capacity in sewage treatment, transport, commerce and administration and other sectors.

In 2014 CHP supplied a total of 43,306 GWh of heat, this was a decrease of 6 percent compared to 2013. There were decreases in heat supplied in a number of industrial sectors, with the largest fall in both absolute and relative terms occurring in the Chemicals sector. These falls in output for the Chemicals sector occurred against a background of much more modest falls in the generating capacity. The largest increase in heat output in relative terms was in Sewage, with a 9.3 percent increase compared to 2013.