Estimating the environmental effects of green roofs: A case study in Kansas City, Missouri

This case study showcases the use of green roofs in Kansas City to manage stormwater, reduce the urban heat island effect, and improve energy efficiency. By documenting the city’s efforts, including partnerships, costs, and measurable benefits, the report highlights how green infrastructure can serve as a sustainable urban planning tool. The study demonstrates reductions in rooftop temperatures, improved air quality, and long-term cost savings for buildings equipped with vegetated roofs. It serves as a practical resource for cities looking to invest in nature-based solutions for climate resilience and public health.

The intended audiences of this case study are city planners, regional planning organizations, nonprofits, environmental staff in governors’ offices, and other state or local officials who want to learn about and be able to demonstrate that green roofs have multiple environmental benefits: providing stormwater management during wet weather events, lowering ambient air temperatures on hot summer days, and cleaning the air. This information may also be useful for stormwater management plans, for meeting National Pollutant Discharge Elimination System permitting requirements, or for Air Quality Management Plans, such as those that may be developed under EPA’s Ozone and Particulate Matter Advance Programs.