Shafter Solar Power Information & Peak Sun Hours
Solar Green Energy Summary for Shafter, California
Lattitude: 35.478
Sunlight
Fixed Tilt Sunlight Hours: 6.4 hours per day
1-Axis Tilt Sunlight Hours: 7.7 hours per day
2-Axis Tilt Sunlight Hours: 8.5 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 Shafter throughout the year can help you better estimate the amount of solar panels you will need to power your business or home.
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 Shafter 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.
Although weather predicting technology has greatly evolved over time, it is still a rather unpredictable factor that will affect the amount of peak sun hours your solar power system will receive. Cloudy days for example will usually have lower peak sun hours that a clear sunny day. And areas that usually have more average sunny days per year will probably have higher peak sun hours that areas that are often overcast or stormy.
We can use previous years of data to estimate the amount of peak sun hours in Shafter. A fixed tilt mount for example will receive 6.4 average hours per day. For more efficiency for your system in Shafter you could use a 1-axis tracking mount and increase your daily peak sun average to 7.7 hours, or even further with a 2-axis panel to get an average of 8.5 hours.