Enter manufacturing energy data
Use purchased electricity, steam, heat, and cooling values to estimate Scope 2 emissions for internal tracking, sustainability reporting, and supplier-based disclosures.
Example data table
| Facility | Year | Electricity | Steam | Heat | Cooling | Location Factor | Base Market Factor | Renewable Share |
|---|---|---|---|---|---|---|---|---|
| Plant A | 2026 | 1,200 MWh | 350 MWh | 220 MWh | 160 MWh | 0.45 kg CO2e/kWh | 0.40 kg CO2e/kWh | 20% |
| Plant B | 2026 | 900 MWh | 180 MWh | 140 MWh | 95 MWh | 0.39 kg CO2e/kWh | 0.28 kg CO2e/kWh | 35% |
You can replace these sample inputs with site-specific meter data, supplier factors, contractual instruments, and plant output figures.
Formula used
1) Energy conversion to MWh
MWh = kWh ÷ 1000
MWh = GJ ÷ 3.6
2) Convert factors to tCO2e per MWh
kg CO2e/MWh ÷ 1000 = tCO2e/MWh
kg CO2e/GJ × 3.6 ÷ 1000 = tCO2e/MWh
3) Effective market electricity factor
Effective Market Factor = (Base Market Factor × (1 − Renewable Share)) + (Renewable Factor × Renewable Share)
4) Purchased electricity emissions
Electricity Emissions = Electricity MWh × (1 + Grid Loss %) × Emission Factor
5) Purchased steam, heat, and cooling emissions
Emissions = Energy MWh × Source Emission Factor
6) Total Scope 2 emissions
Total = Electricity + Steam + Heat + Cooling
7) Emissions intensity
Intensity = Total Emissions ÷ Annual Output
How to use this calculator
- Enter your facility name and reporting year.
- Add purchased electricity use and choose its unit.
- Enter location and market electricity factors using matching factor units.
- Optionally include renewable contract share and a renewable-specific factor.
- Enter purchased steam, heat, and cooling values with their factors.
- Add annual production output to calculate emissions intensity.
- Click Calculate Emissions to display totals above the form.
- Download the summary as CSV or PDF for internal reporting.
FAQs
1. What does Scope 2 mean in manufacturing?
Scope 2 covers indirect emissions from purchased electricity, steam, heat, and cooling used by the facility. It excludes on-site fuel combustion and most supply chain emissions.
2. Why show both location and market methods?
The location method reflects average grid intensity. The market method reflects supplier contracts, renewable instruments, and other purchasing choices that change your reported electricity emissions.
3. Should I include transmission and distribution losses?
Include losses only when your reporting approach requires them. Some organizations track them separately, while others use delivered electricity values without an added loss adjustment.
4. Can I use different units for energy inputs?
Yes. The calculator accepts kWh, MWh, and GJ, then converts everything into MWh so emissions across all purchased energy sources stay comparable.
5. What is the renewable contract factor?
It is the emission factor tied to contracted renewable electricity. Many users enter zero, but you can apply a custom residual or supplier value when needed.
6. How is emissions intensity calculated?
Emissions intensity equals total Scope 2 emissions divided by annual output. This helps compare environmental performance even when plant production changes year to year.
7. Can steam, heat, and cooling use separate factors?
Yes. Each purchased energy stream can have its own factor, which is useful when utilities, district systems, or suppliers provide source-specific emission data.
8. Is this calculator suitable for audit-ready disclosure?
It is useful for screening, planning, and internal reporting. For formal disclosure, reconcile data sources, boundaries, contracts, and methodology notes before publishing results.