Data Sources: This calculator uses Portugal-specific emission factors from DGEG (Direção-Geral de Energia e Geologia), REE (Red Eléctrica de España - Iberian grid), and EU environmental databases, updated for 2024.
Emission Factors (Portugal 2024)
| Source | Factor | Unit |
|---|
| Portugal Grid Electricity | 0.165 | kg CO₂/kWh |
| 100% Renewable Energy | 0.02 | kg CO₂/kWh |
| Natural Gas Heating | 0.202 | kg CO₂/kWh |
| Petrol Vehicle | 0.192 | kg CO₂/km |
| Diesel Vehicle | 0.171 | kg CO₂/km |
| Electric Vehicle (Portugal grid) | 0.033 | kg CO₂/km |
| Short-haul Flight | 0.158 | kg CO₂/passenger-km |
| Medium-haul Flight | 0.113 | kg CO₂/passenger-km |
| Long-haul Flight | 0.103 | kg CO₂/passenger-km |
| Truck Freight | 0.062 | kg CO₂/ton-km |
| Office Space (electricity) | 45 | kg CO₂/m²/year |
| Office Space (heating) | 30 | kg CO₂/m²/year |
Cloud Provider Estimates
- Google Cloud: 0.000095 kg CO₂/compute hour (highest renewable %)
- Microsoft Azure: 0.000145 kg CO₂/compute hour
- AWS: 0.000167 kg CO₂/compute hour
- Low usage: ~50 kg CO₂/month
- Medium usage: ~200 kg CO₂/month
- High usage: ~500 kg CO₂/month
Industry Benchmarks (tons CO₂ per employee per year)
- Technology/SaaS: 2.5 tons (Portugal adjusted: 2.2 tons due to green grid)
- Professional Services: 3.1 tons
- E-commerce/Retail: 4.2 tons
- Hospitality/Tourism: 5.5 tons
- Food & Beverage: 6.8 tons
- Manufacturing: 12.5 tons
Calculation Methodology
1. Electricity Emissions: Monthly kWh × 12 × Portugal grid factor (0.165 kg CO₂/kWh) × (1 - renewable %)
2. Heating Emissions: Monthly kWh × 12 × Natural gas factor (0.202 kg CO₂/kWh)
3. Transport Emissions:
- Ground travel: Monthly km × 12 × Vehicle type factor
- Flights: Annual hours × Average speed (850 km/h) × Flight type factor
- Company vehicles: Number × 2400 kg CO₂/vehicle/year (adjusted by type)
4. Shipping Emissions: Monthly km × 12 × Freight factor (0.062 kg CO₂/ton-km, assuming 1 ton average)
5. Cloud/Digital Emissions: Provider factor × Usage level multiplier × 12 months
6. Office Space Emissions: m² × (45 kg electricity + 30 kg heating if applicable)
7. Waste Reduction Credit:
- No recycling: 0% reduction
- Basic recycling: -5% total emissions
- Comprehensive recycling: -15% total emissions
Accuracy & Limitations
Estimated Accuracy: ~75%
What's Included:
- Scope 1: Direct emissions (vehicles, heating)
- Scope 2: Indirect emissions (purchased electricity)
- Partial Scope 3: Business travel, logistics, cloud services
What's NOT Included:
- Full Scope 3: Supply chain, employee commuting, remote work
- Water usage emissions
- Paper and office supplies
- Food/catering services
- Building materials and construction
For CSRD Compliance: This calculator provides initial estimates. Full CSRD reporting requires detailed Scope 3 analysis, supplier engagement, and third-party verification. We offer detailed assessment services for compliance-ready reporting.
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Questions or Feedback?
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