SBEM Calculations Explained

The Simplified Building Energy Model (SBEM) is the core regulatory framework used to analyse the energy efficiency of non-domestic buildings in the UK. By calculating monthly energy use and carbon emissions based on building geometry, fabric performance, and building services, SBEM ensures compliance with Part L standards while providing an objective baseline for EPC certification. At L2 Energy Consulting, we translate these technical calculations into actionable design insights, ensuring your commercial developments achieve high-performance compliance through precise, expert methodology.

SBEM Workflow at a Glance

Gather project data – building geometry, fabric, HVAC, lighting and controls.
Build the SBEM model – input data into approved software and define zones.
Run compliance checks – compare the design against the notional building and Part L targets.
Refine the design – adjust fabric, systems or controls to close any performance gaps.
Issue reports & certification – provide outputs for Building Control and the wider design team.