England and Wales: before 1900
FiT application
Granite or whinstone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Roof room(s), insulated
Boiler and radiators, oil
From main system, plus solar
oil (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
not defined
TRVs and bypass
FiT application
Granite or whinstone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 91% of fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, oil
From main system, plus solar
oil (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs