Solar Energy LocalSolar Energy Local
Solar Energy & Solar Power Resources

Solar Power in 78380 (Robstown, TX)

Solar Energy in 78380

The month of October has the highest historical solar radition values in 78380 with an average of 6.33 kWh/m2/day. [More]

Solar Panels in 78380

Solar panels in 78380 that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78380

The total length of the day in 78380 (Robstown, TX) today (December 26, 2025) will be 10 hours and 26 minutes. [More]

Compare Solar Quotes
Compare Solar Quotes
78380 Solar Energy

Solar Energy in 78380 (Robstown, TX)

Solar Energy Data for 78380

See the chart below to see how different types of solar panel installations compare in 78380.

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


Solar Energy Analysis for 78380

Solar Radiation Data in 78380

Based on historical 78380 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 78380. [1]

The region associated with 78380 has an average monthly Global Horizontal Irradiance (GHI) of 4.84 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 7% greater than the average monthly Direct Normal Irradiance (DNI) of 4.53 kWh/m2/day. [1]

Solar installations in 78380 that are always titled at the latitude of Robstown (Average Tilt at Latitude or ATaL) average 5.2 kWh/m2/day, or about 7% greater than the average monthly GHI of 4.84 kWh/m2/day and approximately 15% greater than the average monthly DNI of 4.53 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 78380

Solar Radiation Data in 78380

See the chart below for monthly solar radiation levels in 78380.

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

Solar Radiation Analysis for 78380

Solar Radiation Data in 78380

The region associated with 78380 has a average annual solar radiation value of 5.52 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in 78380 is October with an average of 6.33 kWh/m2/day, followed by August at 6.08 kWh/m2/day and September at 5.87 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 78380 are December with an average of 4.56 kWh/m2/day, followed by January with an average of 4.62 kWh/m2/day and February at 5.25 kWh/m2/day. [1]

Compare Solar Quotes
Compare Solar Quotes

Solar Power Comparison: 78380 vs. the U.S.

Solar Power Levels in 78380

The average monthly solar radiation level in 78380, of 5.52 kilowatt hours per square meter per day (kWh/m2/day) is approximately 40% 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: 78380 vs. the U.S.

Below is a month-by-month comparison of how average 78380 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 78380

Sunrise / Sunset in 78380

  • Sunrise/Sunset for December 26, 2025 [2]
    • Sunrise: 7:18 am
    • Sunset: 5:44 pm
    • Length of Day: 10:26
Solar Energy Statistics for 78380

Best Months for Solar in 78380

  • Top Solar Power Months Historically [1]
    • Solar Radiation October (6.33 kWh/m2/day)
    • ATaL: August (6.06 kWh/m2/day)
    • DNI: June (5.74 kWh/m2/day)
    • GHI: June (6.74 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 78380

We do not have data on solar panel installations in ZIP Code 78380 at the current time.

Solar Power Output in 78380

The Power of Solar in 78380

Monthly AC solar system output averages for 78380. Month-by-month solar power, as ranked by AC output, in 78380. [2]

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

Solar Output Analysis for 78380

Solar Radiation Data in 78380

78380 has a average annual solar AC output value of 6107.31 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 78380 is October with an average of 589.41 kWhac, followed by August at 559.4 kWhac and March at 545.35 kWhac. [2]

The three months that historically average the lowest average solar output levels in 78380 are December with an average of 443.98 kWhac, followed by January with an average of 449.69 kWhac and February at 455.21 kWhac. [2]

Weather Forecast for 78380 [5]

Fri Dec 26
80°F
Broken Clouds
Min: 69°F
Max: 83°F
Moderate breeze: 13 mps SSE
Precip.: n/a
Humidity: 61%
Cloud cover: 83%
Sat Dec 27
80°F
Scattered Clouds
Min: 69°F
Max: 82°F
Fresh Breeze: 19 mps SSE
Precip.: n/a
Humidity: 58%
Cloud cover: 25%
Sun Dec 28
80°F
Scattered Clouds
Min: 67°F
Max: 83°F
Fresh Breeze: 18 mps SSE
Precip.: n/a
Humidity: 55%
Cloud cover: 32%
Mon Dec 29
54°F
Moderate Rain
Min: 54°F
Max: 71°F
Fresh Breeze: 23 mps N
Precip.: Chance of Rain
Humidity: 33%
Cloud cover: 100%
Tue Dec 30
50°F
Overcast Clouds
Min: 46°F
Max: 56°F
Moderate breeze: 13 mps N
Precip.: n/a
Humidity: 22%
Cloud cover: 90%
Wed Dec 31
62°F
Few Clouds
Min: 48°F
Max: 66°F
Gentle Breeze: 8 mps SE
Precip.: n/a
Humidity: 35%
Cloud cover: 23%

More about 78380

About 78380

The ZIP code 78380 is associated with the city of Robstown in Nueces County in Texas.

78380 Solar Power

78380 Solar Energy & Power

To learn more about solar energy and solar power in 78380, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.

Did you know?

Solar cells convert sunlight into electricity through a physical process known as the photovoltaic effect.

Cities in Texas

More ZIP Codes in TX


Go

References

[ X ]

Is solar right for your home?

Take the first step toward powering your home with solar energy.

Start now with an online solar savings estimate.