The generation cost of different technologies are measured in terms of levelised costs and are presented on a £ per megawatt hour basis. The Government have carried out analysis on generation costs in some detail in recent years to inform policy decisions. Some of these estimates have been published as part of the Energy Review (2006). 2008 estimates suggest the following indicative costs (£/MWh) associated with generating lMWh of electricity from renewable sources:
£/MWh Onshore wind (80MW) 70 Offshore wind (100MW) 92 Biomass regular 80-90 Biomass energy crop 110-120 Biomass CHP 80-90 Wave 160-190 Tidal stream 150-180 Tidal range 130-160 Biowaste 90-110 Biogas 170-200