The building has an excellent A3 BER Rating.
The Building Energy Rating (BER) is an indication of the energy performance of office buildings in Ireland.
It covers energy use for space heating, water heating, ventilation, air conditioning and lighting calculated on the basis of standard occupancy.
It is expressed as primary energy use per unit floor area per year (kWh/m2/yr).
15 Barrow Street is 117 kWh/m2/yr 0.34 equating to A3 BER Rating on the BER Scale A-G.
A-rated Offices are the most energy efficient and will tend to have the lowest energy bills whereas G-Rated offices have high energy cost in running them annually.