![]() There are a number of factors that will alter the optimal angle of your solar panels. What factors affect your optimal solar panel angle? ![]() Therefore, the best angle for your solar panels is the one that allows the panels to get the most direct, perpendicular light. Photovoltaics produce power when the angle at which the sun’s rays hit the panel surface (the “angle of incidence”) is small, or when light strikes the panel as close to perpendicular as possible. ![]() In order to collect solar power energy more efficiently, solar panels should be angled to face as close to the sun as possible. For example, if your solar panels are perpendicular to the ground, they would have a 90-degree angle tilt. Solar panel angle refers to the vertical tilt of your solar system. If a northern-facing roof is your only option, it’s worth considering alternative installation options, such as ground-mounted solar or a carport installation. This means that they won’t sit flush with your roof, and will still produce relatively little electricity. If you live in the northern hemisphere, while it’s technically possible to install solar panels on the north side of your roof, it’s not the best location for solar production (in fact, it’s the worst) – you’ll likely need to use special mounting so that the panels oppose your roof’s slant in order to generate electricity. This doesn’t mean you won’t save money, but if you’re aiming to cover all of your electricity usage with solar, you may have to install a few more panels than you would otherwise need with a southern-facing system. Generally, solar panels that face directly east or directly west produce about 20 percent less electricity than if they were facing south. By positioning solar panels according to true south and the azimuth angle-the angle of the sun in relation to true north and true south-you’ll be able to get the best direction for solar panels and arrays. For those north of the Equator, the best direction for solar panels is south, while homes in the southern hemisphere would position solar panels on roofs with a northern facing orientation. True south and true north face the Earth’s axis rather than aligning with Earth’s magnetic poles. The direction that your roof faces is one of the primary factors that determine how much sunshine your solar panels will see over the course of the day. Which matters more: direction or angle?. ![]()
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