The optimum tilt angle is calculated by adding 15 degrees to your latitude during winter, and subtracting 15 degrees from your latitude during summer. Proper positioning can increase your solar installation's electricity production by up to 25%. The. . For a fixed system (95% of residential installs), the Golden Rule is to tilt your panels at an angle equal to your Latitude. This averages out the sun's position over 365 days. Solar panels give the highest energy output when they are directly facing the sun. The sun moves across the sky and will be low or high depending on the time of the day and the season. For that. . 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.
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