Fairwood Solar Power Information & Peak Sun Hours

Solar Green Energy Summary for Fairwood, Washington

Lattitude: 47.4467

Sunlight

Fixed Tilt Sunlight Hours: 3.7 hours per day

1-Axis Tilt Sunlight Hours: 4.7 hours per day

2-Axis Tilt Sunlight Hours: 5.1 hours per day

Peak sun hours are a vital measurement to understand when considering the installation of solar panels. Peak sun hours are not the same as total sunlight hours because not every hour of sunlight during the day has enough strength and solar insolation to qualify as a peak sun hour. The rule of thumb is that a peak sun hour is when the intensity of the sun that is hitting your solar panel is providing at least 1,000 watts per square meter. This is an arbitrary number, but it is a number where most solar panels will be producing an efficient output and not underperforming due to sunshine that is not strong enough or direct enough.

The equator has a latitude of zero while Fairwood has a latitude of 47.4. 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.

Throughout the day the sun obviously moves throughout the Fairwood sky. The suns position in the sky also changes throughout the year with the seasons. A fixed solar panel does not accommodate for these changes. However, a 1-axis panel rotates and follows the sun’s path during the day. A 2-axis panel both follows the sun’s daily path as well as the seasonal differences

Another reason to consider average peak sun hours is because weather can dramatically affect the day-to-day output of solar panels. It goes without saying that a dark stormy day will produce less output than a clear sunny day. Looking at a yearly average helps account for these daily variables.

In Fairwood the average yearly peak sun hours for a fixed tilt non-tracking solar panel mount is 3.7. This is for a fixed panel mounted at an angle that is equal to the latitude of the location for the entire year. The amount of peak sun hours increases to 4.7 hours if you are using a 1-axis panel, and to 5.1 hours if you upgrade to a 2-axis solar panel.


Solar Businesses in Fairwood, Washington




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