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Energy Benchmarking (TM46)
Compare annual electricity and fossil-fuel use per m2 GIA against CIBSE TM46 category benchmarks, with a banded verdict and DESNZ carbon.
The Ensign ToolboxEnergy Benchmarking (TM46)Compare annual electricity and fossil-fuel use per m2 GIA against CIBSE TM46 category benchmarks, with a banded verdict and DESNZ carbon.
Building
General office and commercial working areas
m²
Annual energy use
kWh/yr
kWh/yr
Carbon factors (DESNZ 2026)
kgCO₂e/kWh
Scope 2 generation, UK average
kgCO₂e/kWh
Default = natural gas, gross CV — edit for oil/LPG/biomass
Enter a positive GIA and nonnegative annual electricity/fossil-thermal use.