In their simulations, the authors consider the contribution of selected policy support mechanisms in affecting the growth rate of CHP uptake in the UK, and, given the significant degree of uncertainty surrounding the input data and assumptions, the authors conduct significant sensitivity analysis around fuel price and other modelling assumptions. The extent of the sensitivity analysis means that there are a wide range of possible CHP capacity outcomes. The authors find that fuel price assumptions, in particular, have substantial effects on results, in line with intuition: for example, the results suggest that under a ‘more favourable’ price scenario for CHP (where electricity prices are assumed to be 40% higher and gas prices 40% lower than baseline assumptions), a higher CHP capacity is installed (13.6 GWe by 2010), whilst for a ‘less favourable’ price scenario for CHP (where electricity prices are lower and gas prices are higher than in the baseline), there is downward pressure on installed CHP capacity, with build estimates of 7.3 GWe by2010. The authors also estimate the importance of key support mechanisms in influencing the installation of CHP capacity, and find that exemption from the Climate Change Levy (CCL) for certain CHP power exports has a particularly strong impact on CHP capacity installed by 2010. The authors also find that CO2 emissions fall as a result of the CHP installations, due to CHP being more efficient and using fuels with a much lower carbon content, on average, compared with conventional generation. While the analysis is indicative, the results are, of course, heavily dependent upon the specific assumptions made, although the sensitivity analysis is a recognition of this