Reducing the amount of electricity you need to buy from your utility isn’t the only way going solar helps you save money. Installing panels on your roof may also reduce your energy demand. This is because rooftop solar can help regulate your roof’s temperature. A study from the University of California San Diego found that solar panel installations can reduce roof heat by as much as five degrees.
Solar panels are typically attached to your roof using a racking system. Most rooftop systems are installed so that there is a gap between the roof and the panel. This separation allows for air to flow under the panels and sweep away some of the heat. Solar panels also absorb heat that would otherwise be absorbed by the roof itself. Researchers calculated that solar’s temperature reduction amounts to an additional five percent return on investment due to lower energy costs due to reduced usage. In the winter months, solar panels can prevent heat from escaping, leading to lower heating costs.