SBEM
SBEM (Simplified Building Energy Model) calculations are required by law for new commercial buildings, conversions, and large extensions to prove compliance with Building Regulations (specifically Part L2A for new builds). SBEM calculations are also typically required for material changes of use to existing buildings (e.g. converting a residential property to commercial) and any significant alterations to existing commercial buildings that impact energy performance.
Why SBEM calculations are required
SBEM calculations are a method used to assess the energy performance of new and existing commercial buildings in the UK. They predict a building's energy consumption for heating, cooling, ventilation, and lighting, and are used to demonstrate compliance with Part L of the Building Regulations.
Need for SBEM
An SBEM calculation (Simplified Building Energy Model) is a crucial requirement for all new non-domestic buildings in the UK, ensuring compliance with Part L of the Building Regulations. It is a legal requirement that demonstrates your project meets national energy efficiency standards and is essential for Building Control sign-off before completion, sale, or lease. The SBEM assessment also provides the data needed to produce the As-Built BRUKL report and Energy Performance Certificate (EPC)—both mandatory for any commercial property transaction. Beyond compliance, SBEM calculations help optimise building performance, accurately assessing energy consumption and COâ‚‚ emissions so that designers and developers can deliver sustainable, high-performing buildings from the start.
​SBEM Calculations
SBEM calculations consider various factors, including:
Building fabric: Insulation levels of walls, roof, and floor; window and door specifications.
Heating and cooling systems: Efficiency of boilers, chillers, and other HVAC equipment.
Ventilation: Mechanical and natural ventilation strategies.
Lighting: Type of lighting, controls, and occupancy sensors.
Building geometry and orientation: Shape, size, and direction of the building.
Renewable energy sources: Solar panels, heat pumps, etc.
The calculation produces a Building Emission Rate (BER), which represents the CO2 emissions of the proposed building, and compares it to a Target Emission Rate (TER), which is the maximum permissible CO2 emissions. If the BER is lower than the TER, the building passes the assessment.
Our Service
As with most of our services, getting Award Energy involved at the design stage helps to iron out any potential problems with specification and ensure compliance with Part L2. The Design BRUKL documentation can be issued before construction starts, demonstrating that the proposed construction specification meets the Building Regulations requirements. The As Built BRUKL and Energy Performance Certificate are then issued at completion.
If you have a commercial project you need support on with SBEM Calculations and compliance, please contact Award Energy and we’ll be happy to assist.