Solar Energy & Solar Power Resources

Solar Energy in Spearfish, SD

Solar Energy in Spearfish

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

Solar Panels in Spearfish

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

Sunrise & Sunset in Spearfish

The total length of the day in Spearfish, SD today (September 11, 2026) will be 12 hours and 47 minutes. [More]

Solar Power in Spearfish, SD

Solar Energy Data in Spearfish, SD

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

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

Solar Energy Analysis for Spearfish, SD

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

Solar Radiation Data in Spearfish, SD

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

Sorry, data is not currently available.

Solar Radiation Analysis for Spearfish, SD

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

Historical solar radiation data for Spearfish is not currently available.

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

Solar Power Levels in Spearfish

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

Solar Power: Spearfish vs. the U.S.

Below is a month-by-month comparison of how average Spearfish 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 Spearfish

Sunrise / Sunset in Spearfish

Sunrise/Sunset for September 11, 2026 ^[2]
- Sunrise: 6:28 am
- Sunset: 7:15 pm
- Length of Day: 12:47

Best Months for Solar in Spearfish

Monthly data not currently available.

Solar Panel Installs in Spearfish

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

Solar Power Output in Spearfish

The Power of Solar in Spearfish, SD

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

AC output data is not currently available.

Solar Output Analysis for Spearfish, SD

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

Historical solar radiation data for Spearfish is not currently available.

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Cost of Utilities in Spearfish

Spearfish Electricity Costs

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Solar Power Poll: Spearfish

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

Spearfish Natural Gas Costs

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

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Weather Forecast for Spearfish, SD ^[5]

Fri Sep 11

74°F

Broken Clouds
Min: 54°F
Max: 78°F

Fresh Breeze: 20 mps NNW
Precip.: n/a
Humidity: 26%
Cloud cover: 65%

Sat Sep 12

67°F

Broken Clouds
Min: 44°F
Max: 72°F

Gentle Breeze: 11 mps E
Precip.: n/a
Humidity: 35%
Cloud cover: 77%

Sun Sep 13

71°F

Light Rain
Min: 47°F
Max: 76°F

Moderate breeze: 18 mps ESE
Precip.: Chance of Rain
Humidity: 38%
Cloud cover: 64%

Mon Sep 14

71°F

Light Rain
Min: 53°F
Max: 76°F

Moderate breeze: 15 mps NW
Precip.: Chance of Rain
Humidity: 32%
Cloud cover: 84%

Tue Sep 15

68°F

Sky Is Clear
Min: 45°F
Max: 74°F

Moderate breeze: 13 mps SE
Precip.: n/a
Humidity: 34%
Cloud cover: 8%

Wed Sep 16

80°F

Light Rain
Min: 55°F
Max: 81°F

Gentle Breeze: 12 mps NNE
Precip.: Chance of Rain
Humidity: 29%
Cloud cover: 30%

More about Spearfish

About Spearfish

The city of Spearfish, SD in Lawrence County has an approximate population of 10,494. ^[6]

Spearfish, SD Solar Energy

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