At RJ Energy, we provide a coordinated approach to Building Regulations compliance, sustainability targets and energy performance certification. We work on a range of projects from self build properties and domestic extensions, through to large scale residential new build and commercial buildings.

SAP Calculations

SAP Calculations (Standard Assessment Procedure) are used to work out the energy performance of a dwelling and are required for all new builds, as well as conversions and many extensions.

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SBEM Calculations

SBEM calculations are used to demonstrate the energy performance of new and existing non-domestic buildings.
SBEM, which stands for 'Simplified Building Energy Model' is a Government approved method used to calculate the level of energy required to heat, cool, ventilate and light commercial premises.

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Water Efficiency Calculations

Water Efficiency Calculations are used to measure compliance with water efficiency targets for new build dwellings and conversions. These calculations are used to ensure compliance with Part G of UK Building Regulations where a maximum water use of 125 litres per person is required.

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