The optimal tilt angle of photovoltaic solar panels is that the surface of the solar panel faces the Sun perpendicularly. Our solar panel angle calculator takes the guesswork out of panel positioning, suggesting panel tilt angles based on your location's latitude and your willingness to reposition based on the sun's seasonal dance across the sky. Start by entering your location in the search box. The calculator. All this entails determining the optimal solar panel angle and its orientation in fixed installations to achieve the minimum cost of solar power per kilowatt-hour (kWh) generated and get the most out of our investment. Usually, solar panels of a self-consumption system are located on the roof. That is why many solar angles are used in PV power calculations, and solar tracking systems improve the efficiency of PV panels by following the sun through the sky. The solar power array at Nellis Air Force Base in Nevada. 6º, versus New Orleans at 26. Check out our table below for more examples of ideal tilt angles by city.