Solar panels effect on heat island

Gahl, typically dark surfaces contribute to the heat island effect, because they absorb light and then release the heat to the local environment. I don't have any data on this, but I would assume that PV panels would contribute to the heat island effect, while solar thermal might be more neutral, because it is capturing and using the heat.To go further than what you were asking, I think generally people don't worry too much about the heat island contribution of solar panels because they generally are a small proportion of a roof area, they are ventilated, or provide shading of pavement in some cases, and they are also generating renewable energy and thus providing a benefit.

Hi Tristan,

Do you know if 100% of the roof area is covered with solar panels, I can awared SSc7.2?

Thank you,

Hi MKK. You posed this question of Tristan but I have an answer for you. According to LEED Interpretation #10235: “Roof area that consists of functional, usable spaces—such as helipads, recreation courts, and areas covered by equipment, SOLAR PANELS, and appurtenances—can be exempted from the roof calculations for SSc7.2. Projects are not eligible for SSc7.2 if the exempted spaces encompass the entire roof area.”

Solar panels are designed to absorb sunlight and convert it into electricity. By installing panels on solar rooftop systems and other surfaces, these panels act as a protective layer that prevents direct sunlight from reaching the underlying building materials. This leads to reduced heat absorption by the roof and surrounding structures, effectively lowering surface temperatures.