Solar Energy & Solar Power Resources

Solar Energy in Fairfax, VA

Solar Energy in Fairfax

Sorry, historical solar radition values for Fairfax are currently unavailable, please check back later.

Solar Panels in Fairfax

Solar panels in Fairfax that will produce the maximum solar energy output. [More]

Sunrise & Sunset in Fairfax

The total length of the day in Fairfax, VA today (September 03, 2025) will be 12 hours and 58 minutes. [More]

Solar Power in Fairfax, VA

Solar Energy Data in Fairfax, VA

See the chart below to see how different types of solar panel installations compare in Fairfax.

Historical solar power output data for Fairfax is not currently available.

Solar Energy Analysis for Fairfax, VA

Sorry, it is not possible to complete our solar energy analysis for Fairfax at this time.

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Solar Energy Glossary

Global Horizontal Irradiance (GHI)

Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.

Direct Normal Irradiance (DNI)

Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.

Average Tilt at Latitude (ATaL)

Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.

Solar Radiation Levels in Fairfax

Solar Radiation Data in Fairfax, VA

See the chart below for monthly solar radiation levels in Fairfax.

Sorry, data is not currently available.

Solar Radiation Analysis for Fairfax, VA

Sorry, it is not possible to complete our solar radiation analysis for Fairfax at this time.

Historical solar radiation data for Fairfax is not currently available.

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Solar Power Comparison: Fairfax vs. the U.S.

Solar Power Levels in Fairfax

Sorry, solar radiation data for Virginia is not currently available.

Solar Power: Fairfax vs. the U.S.

Below is a month-by-month comparison of how average Fairfax solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). ^[1]

Sorry, solar radiation data for Virginia is not currently available.

Solar Data & Statistics for Fairfax

Sunrise / Sunset in Fairfax

Sunrise/Sunset for September 03, 2025 ^[2]
- Sunrise: 6:39 am
- Sunset: 7:37 pm
- Length of Day: 12:58

Best Months for Solar in Fairfax

Monthly data not currently available.

Solar Panel Installs in Fairfax

We do not currently have data on solar panel installations in the city of Fairfax, VA at this current time.

Solar Power Output in Fairfax

The Power of Solar in Fairfax, VA

Monthly AC solar system output averages for Fairfax (va). Month-by-month solar power, as ranked by AC output, in Fairfax. ^[2]

AC output data is not currently available.

Solar Output Analysis for Fairfax, VA

Sorry, it is not possible to complete our solar radiation analysis for Fairfax at this time.

Historical solar radiation data for Fairfax is not currently available.

Please check back later.

Cost of Utilities in Fairfax

Fairfax Electricity Costs

Sorry, Fairfax residential electricity prices are currently unavailable.

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Solar Power Poll: Fairfax

Vote now: Given all of the data and analysis provided for Fairfax, is solar power a good choice for residents of this city?

Fairfax Natural Gas Costs

Sorry, Virginia residential natural gas prices are currently unavailable.

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Weather Forecast for Fairfax, VA ^[5]

Wed Sep 3

76°F

Overcast Clouds
Min: 54°F
Max: 82°F

Light breeze: 6 mps SE
Precip.: n/a
Humidity: 35%
Cloud cover: 89%

Thu Sep 4

85°F

Moderate Rain
Min: 59°F
Max: 88°F

Gentle Breeze: 11 mps SSW
Precip.: Chance of Rain
Humidity: 34%
Cloud cover: 0%

Fri Sep 5

86°F

Light Rain
Min: 62°F
Max: 90°F

Gentle Breeze: 10 mps SW
Precip.: Chance of Rain
Humidity: 40%
Cloud cover: 3%

Sat Sep 6

81°F

Moderate Rain
Min: 58°F
Max: 81°F

Moderate breeze: 13 mps NNW
Precip.: Chance of Rain
Humidity: 56%
Cloud cover: 93%

Sun Sep 7

64°F

Light Rain
Min: 57°F
Max: 64°F

Light breeze: 6 mps NNW
Precip.: Chance of Rain
Humidity: 55%
Cloud cover: 100%

Mon Sep 8

76°F

Few Clouds
Min: 53°F
Max: 76°F

Light breeze: 6 mps NNE
Precip.: n/a
Humidity: 33%
Cloud cover: 23%

More about Fairfax

About Fairfax

The city of Fairfax, VA in Fairfax County has an approximate population of 22,565. ^[6]

Fairfax, VA Solar Energy

To learn more about solar energy and solar power Fairfax, VA, or for more solar-related resources for Fairfax, visit the U.S. Energy Information Administration.