ENERGY USAGE IN OLDER BUILDINGS. Jon Wallsgrove Departmental Architect. Background. Approx 800 buildings in HMCS portfolio Courts, office buildings, judges lodgings 20% listed buildings £60m annual energy bill for MoJ (HMCS, probation, prisons) 11.26bn kW/hr Age distribution
The pre-war buildings between 1900 and 1939 use 13% more energy (244 kW/h).
The immediately post war buildings (1940 to 1959) use 32% more energy (286 kW/h) and are by far the worst.
The buildings of the 1960s use 24% more energy (267 kW/h).
The buildings of the 1970s and 1980s use 11% more energy - similar to the pre-war buildings.
The buildings of the 1990s and 2000s equal the energy efficiency of the pre 1900 buildings.
- - 1990s and 2000s 68% more than the pre-1900 buildings, due to 42% increase in floor area per court