England and Wales: 1900-1929
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 20% of fixed outlets
Pitched, 250 mm loft insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed before 2002
Manual charge control
FiT application
Granite or whinstone, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, dual fuel (mineral and wood)
Electric immersion, standard tariff
dual fuel - mineral + wood
Fully double glazed
double glazing installed during or after 2002
TRVs and bypass