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WarmerBER @warmerber.bsky.social · 28/04/2026

Coming in May, the new rating bands for domestic BERs are as follows ...

A0 rating is less than 42 kilowatt hour per meter squared per year;
A rating is less than 75 kilowatt hour per meter squared per year;
B rating is less than 150 kilowatt hour per meter squared per year;
C rating is less than 225 kilowatt hour per meter squared per year;
D rating is less than 275 kilowatt hour per meter squared per year;
E rating is less than 325 kilowatt hour per meter squared per year;
F rating is less than 375 kilowatt hour per meter squared per year;
G rating is greater than 375 kilowatt hour per meter squared per year;

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