Rockcreek Solar Power Information & Peak Sun Hours
Solar Green Energy Summary for Rockcreek, Oregon
Lattitude: 45.5525
Sunlight
Fixed Tilt Sunlight Hours: 3.9 hours per day
1-Axis Tilt Sunlight Hours: 4.9 hours per day
2-Axis Tilt Sunlight Hours: 6.1 hours per day
It goes without saying that throughout the year the amount of sunlight in any given day is going to vary. The time of year and weather will have a strong influence on daily sunshine. Looking at the average amount of peak sunshine hours in a day during an entire year stretch is a valuable exercise when trying to determine the amount and type of solar panels you need to install to power your business or your home. 3.9 peak sun hours means that in Rockcreek on average there are 3.9 hours a day where the sun is strong enough for solar panels to harness its energy. This number is less than the amount of total sunlight hours in a day because there are times during the day (ex. sunrise and sunset) where the sun is not strong enough to benefit solar panels.
Sunlight hits the earth directly at the equator. This is why the equator has a latitude of zero degrees. The latitude of Rockcreek is 45.6. Knowing the latitude of Rockcreek can help you plan for your solar panel setup, as the larger the latitude the more variance you will see throughout the year for total daily sunlight hours.
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.
Peak sun hours are greatly affected by weather patterns. Cloud coverage is a huge factor in peak sun hours per day because heavy cloud coverage will diminish the power of the solar insolation. You can use historical climate data to estimate average cloud and weather coverage, but it will obviously vary slightly from year to year.
We can take the latitude of Rockcreek 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, Rockcreek will receive 3.9 average peak sun hours per day. This number can be increased to 4.9 hours by using a 1-axis tracking mount, or 6.1 hours from a 2-axis tracking mount.