Almost 1m BER audits completed over 12 years

The most energy-efficient building types audited over the past 12 years are schools and colleges, with 29% awarded an A rating, according to the CSO. File picture

Almost 1m building energy ratings (BER) have been completed in Ireland since first introduced as a compulsory measure 12 years ago.

A building owner must obtain a BER certificate from a certified checker before a new building is occupied for the first time, in what is described as an audit.