Home energy performance ratio
The Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018 defines the Home energy performance ratio (HEPR) as:
|
A metric that is unique to the HQM that is calculated by the HQM energy engine using modelled outputs from approved building energy calculation software, against which HEPR credits are awarded. It is a ratio that defines the performance of a HQM assessed home in terms of its:
For each metric, the homes actual performance is compared against the relevant National Building Regulations compliant standard (i.e. a baseline), and the comparison expressed as a percentage improvement. The percentage improvement for each metric is then compared against a best practice performance level for modelled stock of house types, and then ‘translated’ into a ratio of performance for each metric. These ratios are then weighted for each metric and added together to determine a single overall HEPR. A description of how to obtain a home’s HEPR is summarised in Methodology on P123 of the Manual. Greater detail of how the HEPR is defined and calculated is provided in the HQM energy guidance document. |
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Construction Management, 8 July
NEETs crisis drives interest in trades, but apprenticeships barriers remain.
Passive fire protection webinar
MEP services penetration seals.
Where its at podcast (and video) - The role of the Architectural Technologist as an Expert Witness.
More than 200 remarkable buildings added to SAVE’s Buildings at Risk register.
Government scraps pre-application consultation for Nationally Significant Infrastructure Projects.
Historic England and infrastructure
New projects offer opportunities for the historic environment and local communities.
Construction Management, 2 July
Construction deaths halve in two years.
Green Book changes to drive investment in all parts of UK.
Minimum energy efficiency standards (MEES)
CIAT briefing on response to consultations for privately rented non-domestic properties.
Connect, collaborate, shape the future
Registration now live for UK Construction Week Birmingham.
CIOB announces Saul Humphrey FCIOB as new President for 26/27 term.
A quick, simple, and zero-bills solution to prevent overheating.