Roseburg Solar Power Information & Peak Sun Hours
Solar Green Energy Summary for Roseburg, Oregon
Lattitude: 43.2228
Sunlight
Fixed Tilt Sunlight Hours: 5.4 hours per day
1-Axis Tilt Sunlight Hours: 6 hours per day
2-Axis Tilt Sunlight Hours: 6.7 hours per day
The average amount of peak sun hours in a day is a different and more useful number as it relates to solar panels than total sun hours. Total sun hours are exactly what you would expect; the total amount of hours that the sun is out during a 24 hour period. Peak sun hours, on the other hand, are the total number of hours in a day where the sunshine is strong enough to to be absorbed and used by solar panels. Sunlight early in the morning or late at night is often not strong enough to count toward peak sun hours. Because of this, total sun hours will always be more than peak sun hours. Looking at the average peak sun hours in Roseburg throughout the year can help you better estimate the amount of solar panels you will need to power your business or home.
Knowing the latitude of Roseburg will help estimate average peak sun hours for your area. The latitude is used to accurately estimate the time of sunrise and sunset, thus giving you the total hours of daylight each day. Once you know the total hours of daylight, you can estimate the amount of peak sun hours based on a number of variables such as weather, time of year, the angle of the solar panel.
They type of solar panel you use has an affect on the average peak sunlight hours. Some panels allow for movement, so they can track the sun as it rises in the east and sets in the west, or as the seasons change and the sun's path changes. A fixed panel remains fixed and does not have the ability to rotate, whereas a 1-axis and 2-axis panel can adjust with the sun.
Weather is one of the major culprits that will cause inconsistent total peak sun hours for any given day. The sunrise and sunset will always be predictable every day, but the weather is hard to predict and cloud coverage can greatly diminish the efficiency of a solar power system on any given day. On the bright side, a location that is known to have cloudy weather a majority of the year could have unexpectedly more sunny days, so it can go both ways.
We can take the latitude of Roseburg and use that number to know the amount of total sunlight hours in the region from sunlight to sunset and estimate that with a fixed solar panel, Roseburg will receive 5.4 average peak sun hours per day. This number can be increased to 6 hours by using a 1-axis tracking mount, or 6.7 hours from a 2-axis tracking mount.