The paper deals with the evaluation of an experimental PV, thermal combined (PV/T) concentrating collector. The concentrator is a parabolic mirror with a supposed 20x concentration ratio, and so able to produce high temperatures. The cells used are attached on an aluminum bar in which water circulates and so cools the cells. This is necessary because of the cells’ temperature dependent working characteristic. In case of ideal operation both the electric and heat energy can be used. The present document tries to give a summary about the existing PV/T products and tries to evaluate a prototype. The evaluation contains the cells characterisation, optical and thermal analysis of the prototype collector.