Research analysed the energy efficiency of over 80,000 buildings nationwide
Kildare has been ranked highest among Ireland's most energy-efficient business counties.
The research carried out by Procure.ie analysed 80,526 Building Energy Rating (BER) from the Central Statistics Office (CSO), covering every commercial, industrial and public building in Ireland rated between 2009 and 2025.
Counties were then ranked by the share of buildings achieving an A BER rating.
7% of buildings in Kildare (235 out of 3,355) rated A, almost double the national average of 3.6%.
Three counties share second place, each with 5% of their commercial buildings A-rated.
County Dublin leads the trio with 296 out of 5,915 buildings achieving an A rating. Meath follows with 134 out of 2,672 buildings A-rated as well as Westmeath who are also at 5% (84 out of 1,684 buildings).
At the other end of the list, Limerick City has the highest proportion of G-rated commercial buildings in the country at 17%, making it the worst-performing county in Ireland.
Kilkenny and Sligo are not far behind at 16%, with Louth and Monaghan following at 14%.
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