Water & environment
Energy carbon comparison Calculator
Compare emissions using user-selected energy conversion factors. This free energy carbon comparison calculator shows the calculation and its assumptions so you can compare your own figures.
Your results
Compare emissions using user-selected energy conversion factors.
Calculated outcomes
- First Kg CO2e
- 3,000 kg CO₂e
- Second Kg CO2e
- 875 kg CO₂e
Assumptions and estimates
- Method: Emissions = energy × compatible emission factor. Reduction compares second scenario with first.
- Factors are editable examples, not current official Irish inventory figures. Use matching reporting years, boundaries and location/market basis; embodied emissions are excluded.
Useful next steps
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the energy carbon comparison calculation works
Emissions = energy × compatible emission factor. Reduction compares second scenario with first.
Factors are editable examples, not current official Irish inventory figures. Use matching reporting years, boundaries and location/market basis; embodied emissions are excluded.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review avoided kg co2e and reduction percent, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- First scenario energy (kWh)
- 12000
- First emission factor (kg CO₂e/kWh)
- 0.25
- Second scenario energy (kWh)
- 3500
- Second emission factor (kg CO₂e/kWh)
- 0.25
- Avoided Kg CO2e
- 2,125 kg CO₂e
- Reduction Percent
- 70.83%