If an Authority is intending to use the baseline information to support the selection of a suitable building(s) for a Decarbonisation Options Assessment, for example, in the scenario that an estate-wide PPP schools portfolio review is being conducted, then performance benchmarking should be undertaken to identify priority sites for Decarbonisation Options Assessments. Benchmarking also supports the assessment of how buildings compare against typical and/or best practice performance standards.
Prioritisation could be established on several factors including:
> Industry benchmarking for building types (for example CIBSE Guide F - Energy Efficiency2)
> Industry benchmarking for building types (for example Building Energy Efficiency Survey3)
> Industry benchmarking for building types (for example CIBSE's Energy Benchmarking Tool4)
> Estate benchmarking comparing buildings within the same operational estate (kWh per m2 or tCO2e per m2)
> Buildings with/without energy provided from natural gas, fuels, other
> The anticipated remaining lifecycle of assets based on condition
> Whether the building has already been extensively decarbonised
> Whether the building is structurally unfit for modification or adaptation
Outlined below are some examples of the typical building categories and their respective Energy and Carbon Intensity benchmarks, as derived from the Benchmark Table provided by CIBSE in TM46: 2008 Energy Benchmarks Publication.
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2 https://www.cibse.org/Knowledge/knowledge-items/detail?id=a0q20000008I7oTAAS
3 Building Energy Efficiency Survey (BEES) - GOV.UK (www.gov.uk)