There s a simple rule of thumb for calculating the best tilt angle for fixed mount solar panels.
Optimum angle for fixed solar panels.
In this method the optimum tilt angle for solar panels during winter is calculated by multiplying the latitude by 0 9 and then adding 29.
In the spring summer and autumn the efficiency is lower 74 75 in spring autumn and 68 74 in summer because in these seasons the sun travels a larger area of the sky and a fixed panel can t.
Low angle roofs will also face obstacles when it comes to solar panel installation and may require specialized racking if you re looking to tilt them at the optimal angle.
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The other half of the equation is finding the vertical angle or tilt of your solar panels.
Placing panels flush against these types of roofs will mean less electricity production which will lead to reduced solar savings over time.
In winter a panel fixed at the winter angle will be relatively efficient capturing 81 to 88 percent of the energy compared to optimum tracking.
Subtract 15 degrees from the latitude at your location during summer and add 15 degrees to your latitude during winter.
By performing these adjustments you will face your panels directly at the equator maximizing their exposure to sunlight and by extension the amount of solar power you generate.
In the above case example of a latitude of 34 the tilt angle will be 34 0 9 29 59 6.
How can you determine the optimum angle for solar panels for your state.