How to Calculate Environmental Energy
What is Environmental Energy?
Environmental and energy calculators quantify carbon footprints, offset requirements, renewable energy ROI, and resource consumption. They help individuals and organisations make evidence-based sustainability decisions.
Step-by-Step Guide
- 1Carbon offset: emissions (tCO₂e) × offset price ($/tonne)
- 2Water footprint: sum of blue, green, and grey water per product
- 3Renewable ROI: (annual savings − annual costs) / initial investment
Worked Examples
Input
Household 10,000 kWh/yr on average US grid (0.386 kg CO₂/kWh)
Result
≈ 3.86 tCO₂e/yr · offset at $15/tonne ≈ $58/yr
Solar panels typically reduce home emissions by 80–100%