JRC PVGIS-5 · EEA 2024 · EN 14511
Shading & carbon calculator
Pick a city, set the pergola area and the louvre position. The tool returns the annual CO₂ avoided plus its 25-year cumulative — using each region's national grid intensity (EEA 2024) and JRC PVGIS-5 solar data. Outputs are universal percentages and SI units, no currency assumed.
Site location
Europe · 29 cities
20 m²
Carbon avoided
451kg CO₂
per year
11.3t CO₂
over a 25-year service life
What this looks like · Roughly equivalent to:
20mature trees absorbing CO₂ for one year
4172km in an average EU car (108 g CO₂/km)
5.6short-haul flights (Berlin–Paris, 80 kg/pax)
Shading performance
Direct solar gain blocked
95%
Of the direct-beam radiation reaching the pergola footprint
Cooling demand reduction
95%
Versus an unshaded floor area in the same climate
Direct sun blocked
513h
Equivalent peak-sun hours per m² per year
Cooling electricity saved
1231kWh
kWh of grid electricity per year not used for AC (COP 3.5, EN 14511)
GHI: 1080 kWh/m²·yrDirect: 50%SHGC: 0.05
METHOD
Solar irradiance from JRC PVGIS-5 (ERA5 mean 2005–2020), per major city. Direct-beam fraction averaged across the year. Cooling COP = 3.5 (typical air-air heat pump per EN 14511). Grid CO₂ factor uses each city's national grid intensity (EEA 2024). Outputs are first-order estimates for orientation decisions, not a substitute for a building-energy simulation (TRNSYS, EnergyPlus).