UK Domestic Building Energy Benchmarks

45 uk domestic building energy benchmarks held in the GreenCalculus MasterBrain, drawn from National Energy Efficiency Data-Framework (NEED): consumption data tables 2025 (data to 2023). Values are read live from the data layer on every page build, so nothing here is re-typed and nothing can drift from the figures the calculators use. They span 3 units of measurement — 34 of them in kWh per dwelling per year — which is why the spread below is reported per unit and never blended.

Where these factors are used

Residential Mortgage Financed Emissions sets out how factors in this group are applied, and PCAF Mortgages Calculator and Heat Pump vs Gas Boiler Calculator draw on them directly.

What this group contains

Figures are computed per unit and never blended: a median across different units would be arithmetically valid and physically meaningless. 1 further unit in this group has fewer than 3 factors and is counted above but not described.

What has changed

Sources, citation & machine access

Cite the upstream publisher for the values themselves. The reference below credits this compilation and, more usefully, pins the edition you read.

Say, Jeremiah (2026). UK Domestic Building Energy Benchmarks (MasterBrain v2026.110). GreenCalculus. https://greencalculus.com/factors/domestic-building-energy-benchmarks/

Cite this factor group

Values change between editions. Quoting the MasterBrain version is what lets a reader resolve the exact number you used — see the change record above for factors in this group that have moved.

For a reference manager — BibTeX, then RIS:

@misc{greencalculus_building_energy_2026,
  author       = {Say, Jeremiah},
  title        = {UK Domestic Building Energy Benchmarks},
  year         = {2026},
  howpublished = {GreenCalculus},
  note         = {MasterBrain v2026.110},
  url          = {https://greencalculus.com/factors/domestic-building-energy-benchmarks/}
}

TY  - DATA
AU  - Say, Jeremiah
TI  - UK Domestic Building Energy Benchmarks
PY  - 2026
PB  - GreenCalculus
ET  - MasterBrain v2026.110
UR  - https://greencalculus.com/factors/domestic-building-energy-benchmarks/
ER  - 

Every factor on this page is readable from the open endpoint. No key, no signup:

https://greencalculus.com/wp-json/greencalculus/v1/factors/building_energy

curl -s "https://greencalculus.com/wp-json/greencalculus/v1/factors/building_energy?limit=500"

import requests
rows = requests.get("https://greencalculus.com/wp-json/greencalculus/v1/factors/building_energy", params={"limit": 500}).json()["factors"]
print(len(rows), "factors in building_energy")

Or the same rows as a spreadsheet — every factor with its source, the edition it last changed in, and its own link:

https://greencalculus.com/wp-json/greencalculus/v1/factors-export?page=domestic-building-energy-benchmarks

Download this table as CSV

Both responses carry an X-GC-Version header, so a consumer can detect a new edition without diffing the payload. The CSV filename carries the edition too, so two downloads months apart do not collide.

All factors

Last changed names the data-layer edition in which a factor last took a new value, reconstructed from every released edition since v2025.13. A dash means the value has not moved since tracking began — which is the answer to "is the figure I used last year still current?".

Common questions