evidence: The Trust turned to IES to deliver a virtual benchmark of the building, accurate to within a small percentage, in order to identify operational issues and assess potential Energy Improvement Strategies. Possible energy demand reductions of 22.5% for Gas and 30% for Electricity were demonstrated. [...] A series of measures were reviewed by IES in the calibrated benchmark model in four different stages. The data analysis and modelling presented a number of ECMs, which if all were implemented, showed that a 22.5% reduction in Gas Energy Demand and a 30% reduction in Electricity Energy Demand is possible. This equates to a 28% reduction in Energy Spend and 27% reduction in CO2 Emissions. [...] 1) Changes to controls strategies: 29% reduction in Gas Energy Demand, 6% reduction in Electricity Energy Demand 2) Changes to plant operation schedules and the addition of AHU inverters: 19% reduction in Gas Energy Demand, 3.5% reduction in Electricity Energy Demand 3) Installation of Solar PV and CHP35% increase in Gas Energy Demand: 23% reduction in Electricity Energy Demand, 13% reduction in Energy Costs, 9% reduction in CO2 Emissions 4) If all above measures were implemented/installed: 22.5% reduction in Gas Energy Demand, 30% reduction in Electricity Energy Demand, 28% reduction in Energy Spend, 27% reduction in CO2 Emissions