In the UK and much of the rest of the world the concept of micro-combined heat and power (micro-CHP), the provision of heat and power from small, energy efficient sources is gradually gaining momentum. In the UK, the Energy White Paper cited micro-CHP as one of the means by which UK carbon emissions could be significantly reduced. However, it is still unclear whether micro-CHP can meet the twin demands of meeting end-user requirements while also reducing domestic sector carbon emissions. This proposal is for travel funds to enable the University of Strathclyde to continue its participation in the International Energy Agency's Annex 42, which is being run under its Energy Conservation in Building and Community Systems programme (ECBCS). The fundamental objective of Annex 42 is to undertake technical, environmental and economic assessments of micro-CHP technologies using simulation modelling backed-up by laboratory testing and field trials. The major contribution of the University to Annex 42 is to lead activities in model development and testing. Funding will allow the University to participate fully within the Annex and assist in the delivery of a validated model of an internal combustion engine micro-CHP device and assessment of the performance of micro-CHP technologies in typical UK dwellings.Funding will also allow the University to disseminate the outcomes of the Annex (particularly model development and assessment results) to the research community and industry groups.