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Solar Power in 78501 (Mcallen, TX)

Solar Energy in 78501

The month of October has the highest historical solar radition values in 78501 with an average of 6.23 kWh/m2/day. [More]

Solar Panels in 78501

Solar panels in 78501 that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78501

The total length of the day in 78501 (Mcallen, TX) today (February 28, 2026) will be 11 hours and 39 minutes. [More]

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78501 Solar Energy

Solar Energy in 78501 (Mcallen, TX)

Solar Energy Data for 78501

See the chart below to see how different types of solar panel installations compare in 78501.

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


Solar Energy Analysis for 78501

Solar Radiation Data in 78501

Based on historical 78501 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 78501. [1]

The region associated with 78501 has an average monthly Global Horizontal Irradiance (GHI) of 5.03 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 6% greater than the average monthly Direct Normal Irradiance (DNI) of 4.74 kWh/m2/day. [1]

Solar installations in 78501 that are always titled at the latitude of Mcallen (Average Tilt at Latitude or ATaL) average 5.38 kWh/m2/day, or about 7% greater than the average monthly GHI of 5.03 kWh/m2/day and approximately 14% greater than the average monthly DNI of 4.74 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 78501

Solar Radiation Data in 78501

See the chart below for monthly solar radiation levels in 78501.

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

Solar Radiation Analysis for 78501

Solar Radiation Data in 78501

The region associated with 78501 has a average annual solar radiation value of 5.55 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in 78501 is October with an average of 6.23 kWh/m2/day, followed by August at 6.05 kWh/m2/day and September at 5.83 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 78501 are January with an average of 4.84 kWh/m2/day, followed by December with an average of 4.85 kWh/m2/day and November at 5.37 kWh/m2/day. [1]

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Solar Power Comparison: 78501 vs. the U.S.

Solar Power Levels in 78501

The average monthly solar radiation level in 78501, of 5.55 kilowatt hours per square meter per day (kWh/m2/day) is approximately 41% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 16% less than the average level of 6.61 kWh/m2/day in a city with historically high levels (NV). [1]


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

Solar Power: 78501 vs. the U.S.

Below is a month-by-month comparison of how average 78501 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 78501

Sunrise / Sunset in 78501

  • Sunrise/Sunset for February 28, 2026 [2]
    • Sunrise: 6:55 am
    • Sunset: 6:34 pm
    • Length of Day: 11:39
Solar Energy Statistics for 78501

Best Months for Solar in 78501

  • Top Solar Power Months Historically [1]
    • Solar Radiation October (6.23 kWh/m2/day)
    • ATaL: August (6.2 kWh/m2/day)
    • DNI: June (5.92 kWh/m2/day)
    • GHI: June (6.85 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 78501

We do not have data on solar panel installations in ZIP Code 78501 at the current time.

Solar Power Output in 78501

The Power of Solar in 78501

Monthly AC solar system output averages for 78501. Month-by-month solar power, as ranked by AC output, in 78501. [2]

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

Solar Output Analysis for 78501

Solar Radiation Data in 78501

78501 has a average annual solar AC output value of 6085.97 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 78501 is October with an average of 577.03 kWhac, followed by August at 551.26 kWhac and September at 521.23 kWhac. [2]

The three months that historically average the lowest average solar output levels in 78501 are January with an average of 463.33 kWhac, followed by December with an average of 466.98 kWhac and February at 480.25 kWhac. [2]

Weather Forecast for 78501 [5]

Sat Feb 28
85°F
Sky Is Clear
Min: 67°F
Max: 92°F
Moderate breeze: 17 mps SE
Precip.: n/a
Humidity: 41%
Cloud cover: 0%
Sun Mar 1
85°F
Few Clouds
Min: 67°F
Max: 88°F
Fresh Breeze: 18 mps SE
Precip.: n/a
Humidity: 37%
Cloud cover: 19%
Mon Mar 2
85°F
Sky Is Clear
Min: 66°F
Max: 89°F
Moderate breeze: 17 mps SE
Precip.: n/a
Humidity: 38%
Cloud cover: 6%
Tue Mar 3
86°F
Scattered Clouds
Min: 69°F
Max: 89°F
Fresh Breeze: 23 mps SE
Precip.: n/a
Humidity: 48%
Cloud cover: 28%
Wed Mar 4
87°F
Scattered Clouds
Min: 73°F
Max: 89°F
Fresh Breeze: 22 mps SE
Precip.: n/a
Humidity: 41%
Cloud cover: 33%
Thu Mar 5
88°F
Scattered Clouds
Min: 71°F
Max: 89°F
Fresh Breeze: 22 mps SE
Precip.: n/a
Humidity: 39%
Cloud cover: 35%

More about 78501

About 78501

The ZIP code 78501 is associated with the city of Mcallen in Hidalgo County in Texas.

78501 Solar Power

78501 Solar Energy & Power

To learn more about solar energy and solar power in 78501, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.

Did you know?

Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.

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References

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