An EPC shows how efficient the energy is sued within a property. The EPC is given in 'A' to 'G' ratings for the building, with 'A' being the most energy efficient and 'G' being the least. The EPCs will also offer suggestions on how to improve the energy efficiency of the property.
A Commercial EPC is required for all "conditioned" commercial buildings over 50sq metres when they are sold, let, modified (building fabric or services) or constructed. A "conditioned" building is one with a roof and walls which uses energy to condition the indoor climate i.e. some level of heating, mechanical ventilation or cooling.
The SAP energy rating has been devised as a simple and easy to understand method of measuring the overall efficiency of a property. It is the Governments recommended system for producing a home energy rating. It is used to demonstrate compliance with Building Regulations for dwellings part L1A, calculating the (TER) Target Emissions Rate and the (DER) Dwelling Emissions Rate the DER must be equal or better than the TER to show compliance.
Display Energy Certificates
Display Energy Certificates (DECs) show the actual energy usage of a public building, the Operational Rating. This is based on the energy consumption of the building as recorded by gas, electricity and other meters.
Display Energy Certificates are only required for buildings with a total useful floor area over 1,000m2 that are occupied by a public authority and institution providing a public service to a large number of persons and therefore visited by those persons. They are valid for one year. The accompanying Advisory Report is valid for three years.
Energy Performance Certificates
When a Commercial or Residential property is sold or rented an Energy Performance Certificate (EPC) must be raised for that property. The EPC should be made available to a prospective buyer or tenant at the earliest opportunity and before a sale or let is agreed. If you are using an agent to sell or rent your property then the EPC must be raised before the agennt can advertise the property. When a property is for sale the EPC will form an integral part of the conveyance.
An EPC shows how efficient the energy is sued within a property. The EPC is given in 'A' to 'G' ratings for the building, with 'A' being the most energy efficient and 'G' being the least. The EPCs will also offer suggestions on how to improve the energy efficiency of the property. There are several types of EPC:
SBEM (Simplified Building Energy Model) is a Government-defined process in accordance with Part L Building Control Regulations. It is a calculation of the energy performance of new commercial/industry/retail buildings.
There are 2 stages – the first stage (called the ‘design’ stage) needs to be completed and submitted to your Building Control Body or Approved Inspector at the same time as your Building Control Application. The second stage (called the ‘as built’ stage) comes into force when the build is completed and a ‘pass’ Certificate will need to be produced for presentation to your Inspector.
PEA and OCEPC
A SAP rating is the technical calculation that is required in order to produce a Predicted Energy Assessment (PEA) and an On Construction Energy Performance Certificate (OCEPC) both of which are reports that abstract information from the supporting SAP calculation. For either of these see Sap calculations