SBEM is a computer program that provides an analysis of a building's energy efficiency. This program calculates monthly energy use and the carbon dioxide emissions of a building, giving a description of the building size, condition, construction materials and lighting. It can be also used to produce a BRUKL report (Building Regulation UK Part L) which calculates Part L (fuel and energy conservation) of the Building Regulations 2000, measured against maximum carbon dioxide emissions for a whole building. This enables you to manage your development within the demands of building regulations. On newly constructed buildings, we carry out an initial SBEM calculation at the design stage to confirm that the specification, such as insulation and the fixed building services (heating, lighting and ventilation), will meet the necessary minimum building regulations.