Rating Name Consumption
(kWh/year)
Floor area
(m2)
Consumption
(kWh/m2/year)
Main heating type Data
N/A Barrage Control Building 358 Gas Download data
D Cardiff Castle 742,530 2,802 265 Gas Download data
E City Hall 4,079,520 14,165 288 Gas Download data
B New Theatre 781,787 4,519 173 Gas Download data
N/A Norweigian Church Centre 275 Gas Download data
D Old Central Library 816,860 3,713 220 Gas Download data
D St David's Hall 185,044.7 1,516 122 Gas Download data