Solar Energy & Solar Power Resources

Solar Energy in Duncan, SC

Solar Energy in Duncan

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

Solar Panels in Duncan

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

Sunrise & Sunset in Duncan

The total length of the day in Duncan, SC today (October 29, 2025) will be 10 hours and 53 minutes. [More]

Solar Power in Duncan, SC

Solar Energy Data in Duncan, SC

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

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

Solar Energy Analysis for Duncan, SC

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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 Duncan

Solar Radiation Data in Duncan, SC

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

Sorry, data is not currently available.

Solar Radiation Analysis for Duncan, SC

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

Historical solar radiation data for Duncan is not currently available.

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

Solar Power Levels in Duncan

Sorry, solar radiation data for South Carolina is not currently available.

Solar Power: Duncan vs. the U.S.

Below is a month-by-month comparison of how average Duncan 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 South Carolina is not currently available.

Solar Data & Statistics for Duncan

Sunrise / Sunset in Duncan

Sunrise/Sunset for October 29, 2025 ^[2]
- Sunrise: 7:45 am
- Sunset: 6:38 pm
- Length of Day: 10:53

Best Months for Solar in Duncan

Monthly data not currently available.

Solar Panel Installs in Duncan

We do not currently have data on solar panel installations in the town of Duncan, SC at this current time.

Solar Power Output in Duncan

The Power of Solar in Duncan, SC

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

AC output data is not currently available.

Solar Output Analysis for Duncan, SC

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

Historical solar radiation data for Duncan is not currently available.

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Cost of Utilities in Duncan

Duncan Electricity Costs

Sorry, Duncan residential electricity prices are currently unavailable.

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Solar Power Poll: Duncan

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

Duncan Natural Gas Costs

Sorry, South Carolina residential natural gas prices are currently unavailable.

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Weather Forecast for Duncan, SC ^[5]

Wed Oct 29

49°F

Moderate Rain
Min: 47°F
Max: 52°F

Gentle Breeze: 12 mps ENE
Precip.: Chance of Rain
Humidity: 93%
Cloud cover: 100%

Thu Oct 30

55°F

Light Rain
Min: 42°F
Max: 59°F

Gentle Breeze: 12 mps SW
Precip.: Chance of Rain
Humidity: 59%
Cloud cover: 52%

Fri Oct 31

60°F

Sky Is Clear
Min: 41°F
Max: 63°F

Gentle Breeze: 11 mps NW
Precip.: n/a
Humidity: 44%
Cloud cover: 0%

Sat Nov 1

62°F

Sky Is Clear
Min: 42°F
Max: 62°F

Light breeze: 7 mps NNW
Precip.: n/a
Humidity: 40%
Cloud cover: 6%

Sun Nov 2

58°F

Broken Clouds
Min: 43°F
Max: 59°F

Gentle Breeze: 12 mps ENE
Precip.: n/a
Humidity: 47%
Cloud cover: 70%

Mon Nov 3

57°F

Heavy Intensity Rain
Min: 51°F
Max: 57°F

Strong breeze: 24 mps NE
Precip.: Chance of Rain
Humidity: 88%
Cloud cover: 100%

More about Duncan

About Duncan

The town of Duncan, SC in Spartanburg County has an approximate population of 3,181. ^[6]

Duncan, SC Solar Energy

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