Arrowsmith Solar Power Information & Peak Sun Hours
Solar Green Energy Summary for Arrowsmith, Illinois
Lattitude: 40.4493
Sunlight
Fixed Tilt Sunlight Hours: 4.3 hours per day
1-Axis Tilt Sunlight Hours: 5.7 hours per day
2-Axis Tilt Sunlight Hours: 5.8 hours per day
The amount of hours from sunrise to sunset is equal to the total sunlight hours in a 24 hour period. Similarly, peak sun hours are the amount of total sunlight hours in a 24 hour period that are strong enough to provide power from being captured by a solar panel. Not every hour of sunlight delivers the same amount of energy resources. The sunlight at sunrise does not provide as many resources as the amount of sunlight mid-day. Thus, looking at the average peak sunlight hours for Arrowsmith is valuable for calculating your solar needs.
The latitude of the location is important for measuring peak sun hours. The latitude determines how much overall sunlight there will be in a day. With a given latitude, time and date, one can accurately determine when sunrise and sunset will occur. Areas with latitudes closer to the equator will have a more consistent range of solar insolation throughout the year. Whereas areas closer to the poles will have a greater variance during the summer and winter months due to their higher latitudes.
You will notice that the average peak sun hours for Arrowsmith change based on the type of panel being used. The reason for this is quite simple. A fixed panel does exactly what it sounds like, remains fixed in one position at all times. A 1-axis and 2-axis panels have axis that allow them to rotate. The 1-axis rotates with the sun's daily east to west movement while a 2-axis also adjusts for seasonal changes.
There are more variables than latitude that can change average peak sun hours. Weather patterns and geography will influence solar insolation that reaches your system. Thick grey storm clouds for example will block out a lot of the sun to the point where there may be no peak sun hours in the middle of the day when the sun is usually very powerful. Trees and mountains can deflect the sunlight, so be sure your solar panel is selectively placed.
We can use previous years of data to estimate the amount of peak sun hours in Arrowsmith. A fixed tilt mount for example will receive 4.3 average hours per day. For more efficiency for your system in Arrowsmith you could use a 1-axis tracking mount and increase your daily peak sun average to 5.7 hours, or even further with a 2-axis panel to get an average of 5.8 hours.
Helpful & Interesting
What percent of carbon emissions come from cars?
Because of its near-total dependence on petroleum fuels, the U.S. transportation sector is responsible for about a third of our country's climate-changing emissions. Globally, about 15 percent of manmade carbon dioxide comes from cars, trucks, airplanes, ships and other vehicles.