Sitka Solar Power Information & Peak Sun Hours
Solar Green Energy Summary for Sitka, Alaska
Fixed Tilt Sunlight Hours: 3.4 hours per day
1-Axis Tilt Sunlight Hours: 3.6 hours per day
2-Axis Tilt Sunlight Hours: 4.6 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 less than peak sun hours. Looking at the average peak sun hours in Sitka throughout the year can help you better estimate the amount of solar panels you will need to power your business or home.
The equator has a latitude of zero while Sitka has a latitude of 57.2. Any city located on the equator will receive the most sunlight throughout the year because the sunlight arrives at a perpendicular 90 degree angle to the earth at the equator. The further you are from the equator the more your daily sunlight hours can vary.
There are a few ways to increase average peak sun hours per year for your solar power system. One way is to use a tracking mount solar panel instead of a fixed tilt solar panel. A 1-axis mount will track the sun throughout the sky from sunrise to sunset, giving your panel a more efficient facing direction towards the sun throughout the day. A 2-axis solar panel will track the sun in the sky throughout the day, but also change and follow the angle of the sun in the sky throughout the year. Both of these axis system solar panels will produce higher average peak sun hours than a fixed solar panel.
Looking at latitude, average peak sun hours and various data can obviously help when planning for your solar power needs. The one thing you can never fully account for is changing weather. Storms, rain, cloud coverage all have an impact on solar panel capabilities.
For Sitka the number of average daily peak sunlight hours for a fixed solar panel is 3.4 hours. If you are using a more efficient 1 or 2-axis panel then the number will increase to 3.6 hours for a 1-axis panel and 4.6 hours for a 2-axis panel.
Helpful & Interesting
Which is the most polluting energy source?
Coal, natural gas, and oil: Dirty sources of energy. Fossil fuels—coal, natural gas, and oil—produce most of our electricity but come with significant and harmful consequences. They produce the vast majority of global warming emissions. They release toxic chemicals that pollute our air and water.