NBS Benefit Calculator

INITIAL DATA
Zone
Max. daily precipitation mm/day
Roof
Expected lifespan years
Calculate with
Initial investment €
Roof size m2
Advanced settings

Air quality

Data Average value Unit
NO2 g/m2
SO2 g/m2
PM10 g/m2
Data Extensive Intensive
Total Air Quality Improvement € €

Carbon

Data Average value Unit
CO2 emission maintenance kg/(year* m2)
CO2 emission production kg/m2
CO2 saved due to energy reduction kg/(year* m2)
CO2 stored in green roofs kg/(year* m2)

Energy

Data Average value Unit
Annual savings in energy use %

Water quantity

Data Average value Unit
Percentage of retention (extensive rooftop) %
Percentage of retention (intensive rooftop) %

Temperature reduction

Data Average value Unit
Degrees celsius outdoor °C
Degrees celsius indoor °C

Costs for extensive roofs

Data Average value Unit
Investment costs €/m2
Maintenance costs €/m2
Disposal costs €/m2

Costs for intensive roofs

Data Average value Unit
Investment costs €/m2
Maintenance costs €/m2
Disposal costs €/m2

Economic Variables

Data Average value Unit
Energy reduction €/m2
Membrane longevity (extensive) €/m2
Membrane longevity (intensive) €/m2
Acoustic insulation €/m2
Raised property value - extensive roof €/m2
Raised property value - intensive roof €/m2
Cost reduction of stormwater runoff €/m2
Improvement of air quality extensive €/m2
Improvement of air quality intensive €/m2
Provision of recreational space €/m2