Calculator Inputs
Example Data Table
| Month | Electricity (kWh) | Location Factor | Renewable Share (%) | Losses (%) | Location Emissions (kg) |
|---|---|---|---|---|---|
| Jan 2026 | 9,800 | 0.44 | 20 | 7.0 | 4,613.84 |
| Feb 2026 | 10,450 | 0.44 | 25 | 7.0 | 4,919.86 |
| Mar 2026 | 11,200 | 0.46 | 30 | 7.5 | 5,538.40 |
| Apr 2026 | 11,850 | 0.46 | 35 | 8.0 | 5,887.08 |
Formula Used
1. Convert electricity to kWh
Delivered kWh = Usage × Unit conversion
2. Adjust for losses
Adjusted kWh = Delivered kWh × (1 + Loss % ÷ 100)
3. Split renewable and residual electricity
Renewable kWh = Adjusted kWh × Renewable share
Residual kWh = Adjusted kWh − Renewable kWh
4. Location-based emissions
Location emissions = Adjusted kWh × Location factor
5. Market-based blended factor
Blended factor = (Renewable share × Renewable factor) + (Residual share × Market factor)
6. Market-based emissions
Market emissions = Adjusted kWh × Blended factor
7. Avoided emissions
Avoided emissions = Location emissions − Market emissions
How to Use This Calculator
- Enter the site name and reporting period to label your result.
- Add electricity consumption and choose the correct unit.
- Input the location-based grid factor for your reporting boundary.
- Enter the residual or supplier market factor for conventional electricity.
- Set the renewable matched share and the renewable contract factor.
- Include transmission and distribution losses when upstream electricity should be reflected.
- Press Calculate Emissions to view the result summary above the form.
- Use the CSV or PDF buttons to export the calculated report.
Frequently Asked Questions
1. What does this calculator estimate?
It estimates electricity-related CO2e using delivered electricity, grid factors, renewable matching, and transmission losses. It also compares location-based and market-based results in one report.
2. Why are there two emission methods?
Location-based emissions reflect average grid intensity. Market-based emissions reflect contractual electricity attributes, such as renewable certificates or supplier-specific factors. Many ESG frameworks ask organizations to disclose both views.
3. Should I include transmission and distribution losses?
Include losses when your methodology requires upstream electricity generation to satisfy delivered demand. Leave losses at zero when your boundary only covers metered electricity consumption.
4. What unit should I use for emission factors?
Use kilograms of CO2e per kilowatt-hour. The calculator converts MWh and GWh consumption into kWh automatically before calculating emissions.
5. What does renewable matched share mean?
It represents the portion of electricity backed by renewable supply claims, green tariffs, or certificates. That share uses the renewable factor in the market-based calculation.
6. Can I use this for monthly or annual reporting?
Yes. The calculator works for any reporting period as long as the electricity data and emission factors match the same boundary and timeframe.
7. Why can avoided emissions be negative?
Negative avoided emissions mean the market-based setup produces higher emissions than the location-based baseline. This can happen when market factors exceed the average grid factor.
8. Is this suitable for audited ESG disclosures?
It is a practical estimation tool. For assured reporting, use approved factors, keep source documentation, and align every assumption with your chosen reporting standard.