Share of combined heat and power in the gross electricity production in 2005
However, it should be noted that not all electricity production from a CHP 'plant' may be considered as CHP production, as the plant may consist of different types of units (such as heat-only, or flexible units where the 'power-to-heat' ratio may be adjusted). To account for this, in 2000, the method for data collection by Eurostat on CHP was revised (as it had previously tended to overestimate the share of electricity generation from CHP). Therefore, the current share is not directly comparable to the 18 % target outlined in 1997 by the European Commission (COM(97)514 final). The division between auto-producers and main activity producers is unknown for Denmark, Netherlands, Italy, Slovenia and Sweden.