Figure 9 – green roof

♤ Green Building is constructed in a manner that is resource-efficient, environmentally sustainable. Sun light is used efficiently within the building. It lowers the overall energy usage of the building and thus, helps in reducing the effect of UHI.

♤ Another way is to increase the amount of well-watered vegetation. It is empirically tested that the cooling potential per area was highest for street with higher tree density. They increase evapotranspiration, which decreases the air temperature. Trees can reduce energy costs by 10-20%.

Typically heat island mitigation is part of a community's energy, air quality, water, or sustainability effort. Activities to reduce heat islands range from voluntary initiatives, such as cool pavement demonstration projects, to policy actions, such as requiring cool roofs via building codes. Most mitigation activities have multiple benefits, including cleaner air, improved human health and comfort, reduced energy costs, and lower greenhouse gas emissions.