1. What is a kWh to Tonnes of CO2 Calculator?

Definition: This calculator converts electrical energy consumption in kilowatt-hours (kWh) to carbon dioxide (CO2) emissions in metric tonnes.

Purpose: It helps individuals and organizations estimate their carbon footprint from electricity usage.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( tCO2 \) — CO2 emissions (metric tonnes)
• \( E_{kWh} \) — Energy consumption (kilowatt-hours)
• \( EF \) — Emission factor (kg CO2 per kWh)

Explanation: The energy consumption is multiplied by the emission factor to get kg of CO2, then divided by 1000 to convert to metric tonnes.

3. Importance of CO2 Emissions Calculation

Details: Understanding CO2 emissions helps in environmental impact assessments, carbon footprint reduction strategies, and sustainability reporting.

4. Using the Calculator

Tips: Enter your electricity consumption in kWh and the appropriate emission factor (default 0.5 kg/kWh). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical emission factor?
A: The average is about 0.5 kg/kWh but varies by energy source (coal ~1.0, natural gas ~0.5, renewables ~0.05).

Q2: Where can I find specific emission factors?
A: Check with your local utility provider or national energy agency for region-specific data.

Q3: Why convert to tonnes?
A: Metric tonnes are the standard unit for carbon accounting and international reporting.

Q4: Does this include all greenhouse gases?
A: No, this calculates only CO2 emissions. For full greenhouse gas impact, other gases would need conversion to CO2 equivalents.

Q5: How accurate is this calculation?
A: It provides a good estimate but actual emissions depend on your specific energy mix and generation efficiency.