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Solar Panel Angle in Piper City, Illinois

Tilt your solar panels to 37.6° facing south in Piper City. That is the most efficient fixed angle for its latitude of 40.76°. The full breakdown, including seasonal and monthly adjustments, is below.

What is the best solar panel angle for today, August 20, 2026?

Today, the most efficient tilt for photovoltaic panels in Piper City is 28.7°, facing south. At solar noon the sun sits 61.3° above the horizon. Setting your panels to this angle keeps them as close to perpendicular to the sun as possible, which is where they generate the most electricity.

Which direction should solar panels face in Piper City?

Your photovoltaic panels need to be angled facing south. Piper City is in the northern hemisphere, so panels catch the most sun facing south.

Fixed tilt

If you're mounting the photovoltaic panels at a stationary angle, such as on your roof, the most efficient angle is 37.6°.

2-Season tilt

If you're planning to change the angle of your photovoltaic panels twice per year, the most efficient angle is 16.9° facing south in summer months and 54.9° facing south in winter months.

4-Season tilt

When changing the angle of your photovoltaic panels each season, the most efficient angle is 13.2° facing south in summer months and 60.3° facing south in winter months, and 37.6° facing south in autumn and spring months.

Monthly tilt

If you adjust your photovoltaic panels every month, the table below gives the most efficient angle for Piper City throughout the year. The shallowest angle is 17.4° in June, and the steepest is 64.2° in December.

Optimal monthly solar panel tilt and midday sun angle for Piper City, Illinois, US
Month Optimal tilt Sun angle at noon
January 60.9° 29.1°
February 52.0° 38.0°
March 41.2° 48.8°
April 29.2° 60.8°
May 20.7° 69.3°
June 17.4° 72.6°
July 20.4° 69.6°
August 29.0° 61.0°
September 41.0° 49.0°
October 52.6° 37.4°
November 61.2° 28.8°
December 64.2° 25.8°

The sun angle at noon is how high the sun sits above the horizon at midday. Facing your panels south at the tilt shown for each month keeps them as close to perpendicular to the sun as possible, which is where they generate the most electricity.

What Zip Codes does this cover?

60959

Solar panel angles in nearby cities

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What products should I use to setup my solar power installation?

How do I determine the best tilt for my solar panels?

The optimal angle for your solar panels will depend on your latitude. At the equator, the sun is almost directly overhead, so solar panels should be installed at a relatively shallow angle, around 10-15 degrees. As you move further away from the equator, the sun's angle becomes more oblique, so solar panels should be installed at a steeper angle to capture more direct sunlight. This will allow them to capture the most sunlight possible and generate the most electricity.

What factors should you consider when shopping for solar panels?

There are several factors to consider when selecting the best rooftop solar panels for your home:

Efficiency: Solar panels are rated by their efficiency, which is a measure of how much of the sun's energy they can convert into electricity. Higher efficiency panels will produce more electricity and may be a better choice if you have limited space on your roof.

Type of panel: There are two main types of solar panels: monocrystalline and polycrystalline. Monocrystalline panels are made from a single, continuous crystal of silicon and are generally more efficient and more expensive. Polycrystalline panels are made from many smaller crystals of silicon and are less efficient but also less expensive.

Size and weight: Make sure the solar panels you choose will fit on your roof and that your roof is able to support their weight.

Brand and warranty: Consider the reputation of the manufacturer and the terms of their warranty. A good warranty can provide peace of mind and protection against any potential defects or problems with the panels.

Cost: The cost of solar panels can vary significantly. Look for panels that offer the best value for your money, taking into account their efficiency, size, and warranty.