10/06/2026
With Ireland's new BER system, does adding solar still boost your rating? Yes, but often by less. And it's trickier to check.
Two things changed on 24 May 2026:
• New BER scale: 8 levels (A0 to G), down from 15.
• New solar method: your battery and heating setup now affect the result, because solar used at home counts for more than solar exported.
So solar's BER boost is now smaller (around a third less for a typical home without a battery) and more specific to your setup.
It matters because your BER affects resale value, retrofit planning, and green mortgage eligibility.
Check what solar could do to your rating:
https://airpv.ie/ber-calculator
What do you think of the new system? Feedback on the calculator welcome!