How to Read an Energy Performance Chart

A quick guide to reading an energy performance certificate

Energy performance ratings have been part and parcel of the construction industry from surveyors to architects for the last two decades. They were introduced in 2007, alongside the long-scrapped Home Information Packs. When HIPs were abolished in May 2010, the Energy Performance Certificate component was retained.

In a year’s time (as detailed in our previous blog post), landlords will be mandated to work towards an E rating or better for their properties. Non-compliance will result in heavy fines. In this example seen below, we have two charts. One covers the energy efficiency of any given property. The other chart focuses on its carbon footprint, the amount of CO2 emissions from each home.

On both charts, energy ratings are rated from A to G. ‘A’ is the most efficient with ‘G’ being the least efficient energy rating. Using the same scale on the carbon emissions, A to G in descending order ranges from the lowest to the highest level of CO2 emissions.

UK Home Energy Performance Certificate rating chart

A UK Home Energy Performance Certificate rating chart.

As well as the A to G ratings, there are another two columns. The first of the two columns refer to its present energy rating. The second column refers to its potential rating. Each rating is determined by out of hundred with the top percentile (A) having a score of 92 to 100. The lowest rating (G) has a score from 1 to 20.

Energy Performance Certificate ratings:

  • A: 92 – 100;
  • B: 81 – 91;
  • C: 69 – 80;
  • D: 55 – 68;
  • E: 39 – 54;
  • F: 21 – 38;
  • G: 1 – 20.

EPC Yorkshire, 18 April 2017.

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