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Solar Power in 21758 (Knoxville, MD)

Solar Energy in 21758

The month of July has the highest historical solar radition values in 21758 with an average of 5.91 kWh/m2/day. [More]

Solar Panels in 21758

Solar panels in 21758 that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in 21758

The total length of the day in 21758 (Knoxville, MD) today (January 24, 2022) will be 9 hours and 58 minutes. [More]

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21758 Solar Energy

Solar Energy in 21758 (Knoxville, MD)

Solar Energy Data for 21758

See the chart below to see how different types of solar panel installations compare in 21758.

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


Solar Energy Analysis for 21758

Solar Radiation Data in 21758

Based on historical 21758 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 21758. [1]

The region associated with 21758 has an average monthly Global Horizontal Irradiance (GHI) of 4.08 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 1% greater than the average monthly Direct Normal Irradiance (DNI) of 4.05 kWh/m2/day. [1]

Solar installations in 21758 that are always titled at the latitude of Knoxville (Average Tilt at Latitude or ATaL) average 4.76 kWh/m2/day, or about 17% greater than the average monthly GHI of 4.08 kWh/m2/day and approximately 18% greater than the average monthly DNI of 4.05 kWh/m2/day. [1]

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 21758

Solar Radiation Data in 21758

See the chart below for monthly solar radiation levels in 21758.

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

Solar Radiation Analysis for 21758

Solar Radiation Data in 21758

The region associated with 21758 has a average annual solar radiation value of 4.98 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in 21758 is July with an average of 5.91 kWh/m2/day, followed by June at 5.69 kWh/m2/day and May at 5.65 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 21758 are December with an average of 3.28 kWh/m2/day, followed by January with an average of 3.88 kWh/m2/day and November at 4.22 kWh/m2/day. [1]

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Solar Power Comparison: 21758 vs. the U.S.

Solar Power Levels in 21758

The average monthly solar radiation level in 21758, of 4.98 kilowatt hours per square meter per day (kWh/m2/day) is approximately 34% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 25% 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: 21758 vs. the U.S.

Below is a month-by-month comparison of how average 21758 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 21758

Sunrise / Sunset in 21758

  • Sunrise/Sunset for January 24, 2022 [2]
    • Sunrise: 7:23 am
    • Sunset: 5:21 pm
    • Length of Day: 9:58
Solar Energy Statistics for 21758

Best Months for Solar in 21758

  • Top Solar Power Months Historically [1]
    • Solar Radiation July (5.91 kWh/m2/day)
    • ATaL: July (5.59 kWh/m2/day)
    • DNI: July (4.62 kWh/m2/day)
    • GHI: June (6.1 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 21758

We do not have data on solar panel installations in ZIP Code 21758 at the current time.

Solar Power Output in 21758

The Power of Solar in 21758

Monthly AC solar system output averages for 21758. Month-by-month solar power, as ranked by AC output, in 21758. [2]

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

Solar Output Analysis for 21758

Solar Radiation Data in 21758

21758 has a average annual solar AC output value of 5621.48 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 21758 is July with an average of 541.39 kWhac, followed by May at 526.75 kWhac and April at 515.89 kWhac. [2]

The three months that historically average the lowest average solar output levels in 21758 are December with an average of 335.27 kWhac, followed by November with an average of 399.74 kWhac and January at 400.71 kWhac. [2]

Weather Forecast for 21758 [5]

Mon Jan 24
27°F
Scattered Clouds
Min: 17°F
Max: 31°F
Gentle Breeze: 7 mps WNW
Precip.: n/a
Humidity: 60%
Cloud cover: 25%
Tue Jan 25
34°F
Overcast Clouds
Min: 20°F
Max: 35°F
Moderate breeze: 16 mps NW
Precip.: n/a
Humidity: 69%
Cloud cover: 92%
Wed Jan 26
23°F
Scattered Clouds
Min: 16°F
Max: 23°F
Moderate breeze: 14 mps NW
Precip.: n/a
Humidity: 48%
Cloud cover: 27%
Thu Jan 27
29°F
Sky Is Clear
Min: 14°F
Max: 31°F
Gentle Breeze: 10 mps S
Precip.: n/a
Humidity: 43%
Cloud cover: 0%
Fri Jan 28
35°F
Light Snow
Min: 26°F
Max: 36°F
Light breeze: 5 mps NNW
Precip.: Chance of Snow
Humidity: 80%
Cloud cover: 100%
Sat Jan 29
24°F
Sky Is Clear
Min: 17°F
Max: 28°F
Fresh Breeze: 20 mps NW
Precip.: n/a
Humidity: 36%
Cloud cover: 6%

More about 21758

About 21758

The ZIP code 21758 is associated with the city of Knoxville in Frederick County in Maryland.

21758 Solar Power

21758 Solar Energy & Power

To learn more about solar energy and solar power in 21758, or for more solar-related resources for MD, check out 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.

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References