Work out energy rating improvement cost instantly with clear inputs, formula shown and shareable results.
Energy efficiency upgrades pay back through lower bills and through a measurable price premium for better rated homes, estimated at roughly one and a half percent of value per band improved. Combining ten years of savings with that uplift against the capital cost shows whether the package is worth doing on financial grounds alone.
Value uplift
Uplift = property value x bands improved x 1.5 percent
Net benefit
Benefit = uplift + annual saving x 10 - upgrade cost
Uplift = property value x bands improved x 1.5 percent. Energy efficiency upgrades pay back through lower bills and through a measurable price premium for better rated homes, estimated at roughly one and a half percent of value per band improved.
No. Loft insulation and draught proofing pay back in a few years; solid wall insulation and full window replacement often take twenty years or more on energy savings alone.
This calculator takes 4 inputs: Cost of the upgrade package, Annual energy saving, Rating bands improved, Current property value. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.