Project Green Roof is a roof that's covered with plants and a growing medium. They can be partially or completely green. Benefits Climate control: Green roofs can help cool buildings in the summer and warm them in the winter. Stormwater management: Green roofs can reduce the amount of stormwater that runs off into drains. Heat island effect: Green roofs can help reduce the heat island effect in cities. Solar panel performance: Green roofs can help solar panels operate more efficiently. Types Ext