February 25, 2020

Commercial EPC Explained

Since the prices for energy will increase in the future, energy-saving and cost reduction have become more relevant than ever. Although investments in energy-saving measures have not been a priority so far, the long term benefits of such measures should be taken into consideration. Energy improvement measures can have as an outcome important savings and they can stop energy costs from growing. This is why the EPC is necessary, not only for commercial buildings but for all house owners.

Commercial EPC has become a must for commercial premises because potential buyers and tenants are entitled to an impartial overview of energy use and energy costs of the building and because the EPCs will tell sellers and landlords where there’s room for energy improvement as far as their properties are concerned. Such a certificate is valid for around ten years, being not only a mandatory requirement but also a highly effective measure.

The data required to allow the calculation of an EPC includes the following.

  • Date built.
  • Built Form
  • Number of Storeys
  • Property dimensions including average floor to ceiling heights.
  • Wall construction and any areas that are of alternative construction.
  • Roof construction.
  • Openings (windows and doors) and their age.
  • Percentage double glazed.
  • Presence of secondary heating sources – i.e., different heat sources.
  • Heating system – type and fuel used.
  • Boiler (manufacturer, model, and ID number)
  • Heating controls – room stats, programmer, etc.
  • Water heating system and if applicable capacity and insulation for hot water cylinder.
  • Electricity & Gas meter.
  • Type of lights.
  • The appropriate NCT file (for SBEM generated assessments)
  • Aerial view(s) from Google maps or equivalent
  • An appropriate and comprehensive method statement
  • A complete set of comprehensive data collection forms, down to individual envelope level
  • Comprehensive site notes, including floor plans, zoning methodology, full HVAC details including the establishment of efficiencies, construction details, etc.
  • A comprehensive set of dated images that, together with the site notes, provides a full evidence trail to support all data entry for the SBEM model.
  • Correct use of the EPC/EPBD audit information section
  • Audit checking procedure
  • In order to fulfill the required audit process, the Compliance team will be checking the integrity of the following items on all reports:
  • Is the number and type of zone specified sufficiently to adequately describe the building correctly in accordance with SBEM requirements?
  • Has the assessment been carried out at the correct level, i.e. Level 3 or Level 4?
  • General information
  • Weather location.
  • Stage of analysis.
  • The correct level of assessment.
  • Metering provisions.
  • Power factor.
  • Air permeability.
  • Thermal bridging.