The government's factors behind every figure
For UK figures we use the conversion factors the UK government publishes each year. Every calculation records the factor it used and where it came from, so anyone checking can follow the working.
Conversion factors
UK government greenhouse gas conversion factors for company reporting
| Activity | Unit | kgCO₂e per unit | Source |
|---|---|---|---|
| Electricity, UK grid | kWh | 0.20705 | DESNZ |
| Natural gas | kWh | 0.18290 | DESNZ |
| Diesel, average biofuel blend | litre | 2.51 | DESNZ |
| Petrol, average biofuel blend | litre | 2.08 | DESNZ |
| Staff car, average size | mile | 0.27 | DESNZ |
Reading, Plant A, August
48,210kWh
Factor, UK electricity
0.20705kgCO₂e/kWh
Logged result
9.98tCO₂e
How it works
From a number on a bill to a logged result, in five steps.
Every calculation starts with your own number
A meter reading or a bill total in the unit it was billed in: kWh of electricity or gas, litres of diesel or petrol, miles driven in staff cars.
Plant A electricity bill
August 2026
- MeterMain incomer
- Period1 to 31 August
- Consumption48,210 kWh
- EvidenceAugust bill.pdf
Factors you can check, not a black box
What sits behind each figure, and how you can see it.
One published source for UK figures
The UK government's greenhouse gas conversion factors for company reporting, from the Department for Energy Security and Net Zero (DESNZ).
The factor on every line
The calculation log keeps the reading, the factor, its source and the result, so a figure can be followed from bill to total.
| Line | Reading | Factor | tCO₂e |
|---|---|---|---|
| Plant A electricity, Aug | 48,210 kWh | 0.20705 | 9.98 |
| Plant A gas, Aug | 61,400 kWh | 0.18290 | 11.23 |
| Fleet diesel, Aug | 3,120 litres | 2.51 | 7.83 |
Upstream energy included
Transmission and distribution and well-to-tank factors add the upstream energy share of Scope 3 without a separate exercise.
Scope 1
412tCO₂e
Scope 2
615tCO₂e
Upstream energy
183tCO₂e
Signed-off years stay put
A new factor set never rewrites a period you have already signed off.
- 2025/26Locked
- 2024/25Locked
India factors for BRSR
BRSR workspaces use India-specific factors, such as the Central Electricity Authority's grid factor.
- Grid electricity, IndiaCentral Electricity Authority
Sources named in scoped work
When a scoped piece of work, such as a product footprint, needs a factor the government set does not cover, our team names the source for each one in the working.
- Steel sheet, per kgSource named in the report
- Road freight, per tonne-kmUK government set
What the platform does, and what our team does
ESGen does not sell a factor database. We use published factors and show which one sits behind each figure.
In the platform today
- UK government (DESNZ) factors for electricity, gas, diesel, petrol and staff-car miles
- Upstream energy share of Scope 3, added automatically
- Calculation log with the factor and source on every line
- India-specific factors in BRSR workspaces
Done by our team
- Choosing and naming factor sources for scoped Scope 3 work
- Factors for product footprints and life cycle assessments
- Scope 3 categories beyond energy, scoped with you
Questions about emissions factors
What customers ask us most about the numbers behind their figures.
See the factor behind every figure
Book a 30-minute walkthrough and we will trace one of your own bills from reading to result.
Reading, Plant A, August
48,210kWh
Factor, UK electricity
0.20705kgCO₂e/kWh
Logged result
9.98tCO₂e