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Solar Energy in Derby, CT

Solar Energy in Derby

The month of June has the highest historical solar radition values in Derby with an average of 5.34 kWh/m2/day. [More]

Solar Panels in Derby

Solar panels in Derby that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in Derby

The total length of the day in Derby, CT today (December 18, 2018) will be 09 hours and 11 minutes. [More]

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Derby, CT Solar Energy

Solar Power in Derby, CT

Solar Energy Data in Derby, CT

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

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


Solar Energy Analysis for Derby, CT

Solar Radiation Data in Derby

Based on historical Derby, CT data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Derby. [1]

Derby has an average monthly Global Horizontal Irradiance (GHI) of 3.92 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 1% greater than the average monthly Direct Normal Irradiance (DNI) of 3.89 kWh/m2/day. [1]

Solar installations in Derby that are always titled at the latitude of Derby (Average Tilt at Latitude or ATaL) average 4.64 kWh/m2/day, or about 18% greater than the average monthly GHI of 3.92 kWh/m2/day and approximately 19% greater than the average monthly DNI of 3.89 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.

Solar Radiation Levels in Derby

Solar Radiation Data in Derby, CT

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

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

Solar Radiation Analysis for Derby, CT

Solar Radiation Data in Derby

Derby, CT has a average annual solar radiation value of 4.43 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Derby is June with an average of 5.34 kWh/m2/day, followed by July at 5.3 kWh/m2/day and August at 5.26 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Derby (Connecticut) are December with an average of 2.91 kWh/m2/day, followed by November with an average of 3.15 kWh/m2/day and January at 3.34 kWh/m2/day. [1]

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

Solar Power Levels in Derby

The average monthly solar radiation level in Derby, CT, of 4.43 kilowatt hours per square meter per day (kWh/m2/day) is approximately 19% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 33% 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 Derby 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).

Solar Data & Statistics for Derby

Sunrise / Sunset in Derby

  • Sunrise/Sunset for December 18, 2018 [2]
    • Sunrise: 8:13 am
    • Sunset: 5:25 pm
    • Solar Noon: 12:49 pm
    • Length of Day: 09:11
Solar Energy Statistics for Derby

Best Months for Solar in Derby

  • Top Solar Power Months Historically [1]
    • Solar Radiation June (5.34 kWh/m2/day)
    • ATaL: July (5.56 kWh/m2/day)
    • DNI: July (4.66 kWh/m2/day)
    • GHI: July (5.95 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Derby

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

However, Derby is in New Haven County and New Haven County has at least 2,983 solar insallations right now. [1]

Solar Power Output in Derby

The Power of Solar in Derby, CT

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

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

Solar Output Analysis for Derby, CT

Solar Radiation Data in Derby

Derby (CT) has a average annual solar AC output value of 5242.27 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Derby is May with an average of 518.94 kWhac, followed by July at 510.27 kWhac and August at 505.34 kWhac. [2]

The three months that historically average the lowest average solar output levels in Derby (Connecticut) are December with an average of 307.99 kWhac, followed by November with an average of 314.53 kWhac and January at 356.24 kWhac. [2]

Cost of Utilities in Derby

Derby Electricity Costs

Electricity prices (residential) in Derby averaged 22.05 cents per kilowatthour (¢/kWh) in September 2018, which was about 69% more than the overall U.S. average residential electricity rate of 13.01¢/kWh in September. [3]

Solar Power Poll: Derby

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

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

Derby Natural Gas Costs

Natural gas prices (residential) in Connecticut averaged $22.39 per thousand cubic feet (Mcf) in September 2018, which was approximately 29% more than the overall U.S. average residential natural gas rate of $17.32 per Mcf in September. [4]

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Solar Businesses in Derby

Solar Energy Contractors in Derby

Contractors & builders that specialize in solar panel installations in or near Derby, CT.

Sorry, no local solar energy contractors found.

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

Solar Energy Equipment in Derby

Businesses that sell solar energy equipment and/or solar parts in or near Derby, CT.

Sorry, no local business selling solar equipment were found.

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

Energy Conservation Consultants in Derby

Energy conservation specialists that offer consulting services in or near Derby, CT.

Sorry, no local energy conservation specialists were found.

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

Weather Forecast for Derby, CT [5]

Tue Dec 18
28°F
Sky Is Clear
Min: 23°F
Max: 28°F
Fresh Breeze: 9 mps NW
Precip.: n/a
Humidity: 66%
Cloud cover: 0%
Wed Dec 19
26°F
Sky Is Clear
Min: 17°F
Max: 33°F
Light breeze: 3 mps W
Precip.: n/a
Humidity: 76%
Cloud cover: 0%
Thu Dec 20
35°F
Light Rain
Min: 24°F
Max: 43°F
Light breeze: 3 mps SSW
Precip.: Chance of Rain
Humidity: 88%
Cloud cover: 24%
Fri Dec 21
52°F
Heavy Intensity Rain
Min: 44°F
Max: 52°F
Strong breeze: 11 mps SSW
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 99%
Sat Dec 22
42°F
Light Rain
Min: 36°F
Max: 42°F
Fresh Breeze: 9 mps W
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 100%
Sun Dec 23
35°F
Light Snow
Min: 31°F
Max: 35°F
Moderate breeze: 5 mps WSW
Precip.: Chance of Snow
Humidity: 0%
Cloud cover: 98%

More about Derby

About Derby

The city of Derby, CT in New Haven County has an approximate population of 12,902. [6]

Derby Solar Power

Derby, CT Solar Energy

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

Did you know?

photovoltaic effect.", "Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.", "Various missions to space by different countries are known to utilize solar energy as a main power source.", "The largest solar power plant in the world covers 1000 acres & is located in the Mojave Desert in California.", "Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.", "Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.", "It takes light about 8 minutes, 19 seconds to travel the 93,000,000 miles from the sun's surface to us on Earth.", "About half of the sun's energy is absorbed by the Earth's surface; about 30 percent is reflected back from the surface.", "The solar energy that strikes the Earth in one hour could provide all of the Earth's energy needs for a complete year." ); srand(time()); $num = count($dyk); $rand = (rand()%$num); print("$dyk[$rand]"); ?>

Other Cities in Connecticut

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References