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Solar Energy in Darby, MT

Solar Energy in Darby

The month of July has the highest historical solar radition values in Darby with an average of 6.77 kWh/m2/day. [More]

Solar Panels in Darby

Solar panels in Darby that always track the sun throughout the day will produce the maximum solar energy output. [More]

Sunrise & Sunset in Darby

The total length of the day in Darby, MT today (July 20, 2017) will be 15 hours and 12 minutes. [More]

Darby, MT Solar Energy

Solar Power in Darby, MT

Solar Energy Data in Darby, MT

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

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.


Solar Energy Analysis for Darby, MT

Solar Radiation Data in Darby

Based on historical Darby, MT data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in Darby. [1]

Darby has an average monthly Global Horizontal Irradiance (GHI) of 4.06 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 19% less than the average monthly Direct Normal Irradiance (DNI) of 4.99 kWh/m2/day. [1]

Solar installations in Darby that are always titled at the latitude of Darby (Average Tilt at Latitude or ATaL) average 4.92 kWh/m2/day, or about 21% greater than the average monthly GHI of 4.06 kWh/m2/day and approximately 1% less than the average monthly DNI of 4.99 kWh/m2/day. [1]

* See glossary & definitions below.

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.

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Solar Radiation Levels in Darby

Solar Radiation Data in Darby, MT

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

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)

Solar Radiation Analysis for Darby, MT

Solar Radiation Data in Darby

Darby, MT has a average annual solar radiation value of 4.29 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Darby is July with an average of 6.77 kWh/m2/day, followed by August at 6.39 kWh/m2/day and June at 5.78 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Darby (Montana) are December with an average of 1.7 kWh/m2/day, followed by January with an average of 2.06 kWh/m2/day and November at 2.15 kWh/m2/day. [1]

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

Solar Power Levels in Darby

The average monthly solar radiation level in Darby, MT, of 4.29 kilowatt hours per square meter per day (kWh/m2/day) is approximately 15% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 35% less than the average level of 6.6 kWh/m2/day in a city with historically high levels (NV). [1]


→ Values listed as 0 (zero) are not available (N/A).

Solar Power: vs. the U.S.

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

→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).

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Compare Solar Quotes

Solar Data & Statistics for Darby

Sunrise / Sunset in Darby

  • Sunrise/Sunset for July 20, 2017 [2]
    • Sunrise: 6:06 am
    • Sunset: 9:19 pm
    • Solar Noon: 1:43 pm
    • Length of Day: 15:12
Solar Energy Statistics for Darby

Best Months for Solar in Darby

  • Top Solar Power Months Historically [1]
    • Solar Radiation July (6.77 kWh/m2/day)
    • ATaL: July (6.68 kWh/m2/day)
    • DNI: July (8 kWh/m2/day)
    • GHI: July (7.2 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Darby

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

However, Darby is in Ravalli County and Ravalli County has at least 6 solar insallations right now. [1]

Solar Power Output in Darby

The Power of Solar in Darby, MT

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

* Amounts listed in kWhac (kilowatt hours (AC))

Solar Output Analysis for Darby, MT

Solar Radiation Data in Darby

Darby (MT) has a average annual solar AC output value of 4978.79 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Darby is July with an average of 627.94 kWhac, followed by August at 598.51 kWhac and June at 536.41 kWhac. [2]

The three months that historically average the lowest average solar output levels in Darby (Montana) are December with an average of 181.99 kWhac, followed by November with an average of 217.62 kWhac and January at 222.5 kWhac. [2]

Cost of Utilities in Darby

Darby Electricity Costs

Electricity prices (residential) in Darby averaged 10.93 cents per kilowatthour (¢/kWh) in April 2017, which was about 14% less than the overall U.S. average residential electricity rate of 12.70¢/kWh in April. [3]

Solar Power Poll: Darby

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

Yes, solar power is a great option  
No, solar power isn't a good option

Darby Natural Gas Costs

Natural gas prices (residential) in Montana averaged $7.50 per thousand cubic feet (Mcf) in April 2017, which was approximately 34% less than the overall U.S. average residential natural gas rate of $11.38 per Mcf in April. [4]

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Solar Businesses in Darby

Solar Energy Contractors in Darby

Contractors & builders that specialize in solar panel installations in or near Darby, MT.

Sorry, no local solar energy contractors found.

Our search for solar contractors companies located in Darby produced no matches.

Solar Energy Equipment in Darby

Businesses that sell solar energy equipment and/or solar parts in or near Darby, MT.

Sorry, no local business selling solar equipment were found.

Our search for companies selling solar parts located in Darby produced no matches.

Energy Conservation Consultants in Darby

Energy conservation specialists that offer consulting services in or near Darby, MT.

Sorry, no local energy conservation specialists were found.

Our search for energy conservation specialists located in Darby produced no matches.

Weather Forecast for Darby, MT [5]

Thu Jul 20
80°F
Sky Is Clear
Min: 60°F
Max: 81°F
Light breeze: 2 mps WSW
Precip.: n/a
Humidity: 17%
Cloud cover: 0%
Fri Jul 21
70°F
Sky Is Clear
Min: 47°F
Max: 74°F
Gentle Breeze: 3 mps WSW
Precip.: n/a
Humidity: 20%
Cloud cover: 0%
Sat Jul 22
74°F
Sky Is Clear
Min: 48°F
Max: 80°F
Light breeze: 2 mps W
Precip.: n/a
Humidity: 26%
Cloud cover: 0%
Sun Jul 23
76°F
Sky Is Clear
Min: 49°F
Max: 82°F
Light breeze: 2 mps ENE
Precip.: n/a
Humidity: 0%
Cloud cover: 0%
Mon Jul 24
81°F
Sky Is Clear
Min: 52°F
Max: 87°F
Light breeze: 1 mps W
Precip.: n/a
Humidity: 0%
Cloud cover: 0%
Tue Jul 25
84°F
Light Rain
Min: 56°F
Max: 84°F
Gentle Breeze: 4 mps S
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 40%

More about Darby

About Darby

The town of Darby, MT in Ravalli County has an approximate population of 720. [6]

Darby Solar Power

Darby, MT Solar Energy

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

Did you know?

The solar energy that strikes the Earth in one hour could provide all of the Earth's energy needs for a complete year.

Other Cities in Montana

References