SBEM Energy Calculation Guidance 2023
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An updated guide to SBEM calculations for architects, designers, and constructors building greener, cleaner commercial buildings to the latest legislated requirements.
SBEM calculations are the commercial equivalent of the Standard Assessment Procedure (SAP) which is used in the UK to assess the energy usage of residential dwellings. As with SAP calculations, SBEM has been developed to verify compliance with Part L of the Building Regulations as it relates to energy standards. SBEM calculates how much energy a commercial building will typically use in a standard year. They’re an important tool for building designers as they provide clear insight into a building’s energy efficiency and therefore, potentially open up pathways to improve efficiency levels even further.
There are several considerations which impact the building’s energy requirements and therefore must be factored in to the SBEM calculation. These include: The building’s size Materials used in construction Location of the building Orientation and Heating, Ventilation, and Air Conditioning system efficiency Lighting & electrical appliances.
Once computed, The SBEM calculations give a: Building Emission Rate (BER) – expected level of carbon emissions And a Target Emission Rate, (TER) the maximum emissions allowed under Part L. The BER must be equal to or lower than the TER for compliance purposes. The SBEM calculations are also needed for the Energy Performance Certificate (EPC). Without this, a building cannot be let. You’ll need an energy rating of E or above to let – but this threshold will change to a rating of C or above in 2025.
Chapters Within This eGuide Include:
- Explaining SBEM Energy Calculations
- Net-Zero & Commercial Developments
- Guidance for Commercial Developments
- Building Design & The Energy Hierarchy
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