"The potential for fuel CHP units in Europe as a large market in the future is in general well recognised. Although the size of this market is large and is undisputed when the cost targets of m-CHP units is reached, it is often overlooked that it is a very segmented market. All micro-CHP units, as new heating appliances, will have to be certified against the Gas Appliance Directive (90/396/CE). Th ...