Calculator Inputs
Use the form below to convert electricity into emissions.
Example Data Table
| Scenario | kWh | Factor | Renewable Share | Losses | Net Emissions |
|---|---|---|---|---|---|
| Office Floor | 1,200 | 0.42 kg/kWh | 10% | 6% | 480.82 kgCO₂e |
| Warehouse | 8,500 | 0.48 kg/kWh | 5% | 7% | 4,147.32 kgCO₂e |
| Data Room | 2,400 | 0.42 kg/kWh | 40% | 5% | 635.04 kgCO₂e |
Formula Used
1. Normalize the factor
kg CO₂e/kWh = factor value in the selected unit.
For grams, divide by 1000.
For pounds, multiply by 0.45359237.
2. Adjust electricity for losses
Effective kWh = Input kWh × (1 + Loss % ÷ 100)
3. Calculate gross emissions
Gross kgCO₂e = Effective kWh × Normalized factor
4. Apply renewable share
Net kgCO₂e = Gross kgCO₂e × (1 − Renewable share ÷ 100)
5. Annualize the result
Annualized net emissions = Net kgCO₂e × Period multiplier
How to Use This Calculator
- Enter the site or reporting boundary name.
- Add the electricity use in kWh.
- Input the emissions factor from your selected source.
- Choose whether the factor is in kilograms, grams, or pounds.
- Enter renewable share if part of the electricity mix is low carbon.
- Add loss percentage when you want upstream delivery impacts included.
- Select the reporting period for annualized outputs.
- Click calculate to view emissions, sensitivity results, and exports.
Frequently Asked Questions
1. What does this calculator convert?
It converts electricity consumption into estimated greenhouse gas emissions. You can enter kWh, choose a factor unit, add renewable share, and include network losses for a more tailored result.
2. Which emission factor should I use?
Use the factor required by your reporting method. Many teams use national grid averages, utility disclosures, supplier-specific values, or market-based factors from certificates and contracts.
3. Why is renewable share a separate input?
Renewable share helps model lower-carbon electricity sourcing. It reduces gross emissions to a net figure, making scenario testing easier when your energy mix changes over time.
4. Why do losses increase effective kWh?
Losses represent electricity wasted during transmission and distribution. Adding them increases the effective electricity required to serve the reported demand.
5. Can I use grams or pounds instead of kilograms?
Yes. The calculator accepts kg, g, and lb per kWh. It converts every option into a normalized kg per kWh value before calculating emissions.
6. What is annualized net emissions?
Annualized net emissions scale your selected period to a yearly view. A monthly result is multiplied by twelve, while a weekly result is multiplied by fifty-two.
7. What does the graph show?
The graph shows how net emissions change as renewable share rises from zero to one hundred percent. It helps compare sensitivity without re-entering the entire form.
8. Are the exports suitable for reports?
Yes. The CSV export is useful for data reviews, while the PDF export creates a simple one-page summary with key inputs and outputs for reporting packs.