Solar Energy & Solar Power Resources

Solar Energy in Castlewood, SD

Solar Energy in Castlewood

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

Solar Panels in Castlewood

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

Sunrise & Sunset in Castlewood

The total length of the day in Castlewood, SD today (October 07, 2025) will be 11 hours and 26 minutes. [More]

Solar Power in Castlewood, SD

Solar Energy Data in Castlewood, SD

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

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

Solar Energy Analysis for Castlewood, SD

Sorry, it is not possible to complete our solar energy analysis for Castlewood 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 Castlewood

Solar Radiation Data in Castlewood, SD

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

Sorry, data is not currently available.

Solar Radiation Analysis for Castlewood, SD

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

Historical solar radiation data for Castlewood is not currently available.

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

Solar Power Levels in Castlewood

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

Solar Power: Castlewood vs. the U.S.

Below is a month-by-month comparison of how average Castlewood 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 Dakota is not currently available.

Solar Data & Statistics for Castlewood

Sunrise / Sunset in Castlewood

Sunrise/Sunset for October 07, 2025 ^[2]
- Sunrise: 7:32 am
- Sunset: 6:58 pm
- Length of Day: 11:26

Best Months for Solar in Castlewood

Monthly data not currently available.

Solar Panel Installs in Castlewood

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

Solar Power Output in Castlewood

The Power of Solar in Castlewood, SD

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

AC output data is not currently available.

Solar Output Analysis for Castlewood, SD

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

Historical solar radiation data for Castlewood is not currently available.

Please check back later.

Cost of Utilities in Castlewood

Castlewood Electricity Costs

Sorry, Castlewood residential electricity prices are currently unavailable.

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Solar Power Poll: Castlewood

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

Castlewood Natural Gas Costs

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Weather Forecast for Castlewood, SD ^[5]

Tue Oct 7

60°F

Broken Clouds
Min: 38°F
Max: 61°F

Gentle Breeze: 10 mps N
Precip.: n/a
Humidity: 49%
Cloud cover: 55%

Wed Oct 8

67°F

Sky Is Clear
Min: 36°F
Max: 71°F

Moderate breeze: 16 mps S
Precip.: n/a
Humidity: 28%
Cloud cover: 0%

Thu Oct 9

73°F

Sky Is Clear
Min: 54°F
Max: 79°F

Fresh Breeze: 23 mps S
Precip.: n/a
Humidity: 37%
Cloud cover: 6%

Fri Oct 10

65°F

Sky Is Clear
Min: 48°F
Max: 67°F

Gentle Breeze: 11 mps N
Precip.: n/a
Humidity: 31%
Cloud cover: 0%

Sat Oct 11

49°F

Light Rain
Min: 45°F
Max: 54°F

Fresh Breeze: 19 mps SE
Precip.: Chance of Rain
Humidity: 70%
Cloud cover: 100%

Sun Oct 12

71°F

Light Rain
Min: 53°F
Max: 83°F

Fresh Breeze: 21 mps SE
Precip.: Chance of Rain
Humidity: 47%
Cloud cover: 95%

More about Castlewood

About Castlewood

The city of Castlewood, SD in Hamlin County has an approximate population of 627. ^[6]

Castlewood, SD Solar Energy

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