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Solar Power in 91784 (Upland, CA)

Solar Energy in 91784

The month of August has the highest historical solar radition values in 91784 with an average of 7.35 kWh/m2/day. [More]

Solar Panels in 91784

Solar panels in 91784 that always track the sun throughout the day will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91784

The total length of the day in 91784 (Upland, CA) today (March 18, 2024) will be 12 hours and 6 minutes. [More]

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91784 Solar Energy

Solar Energy in 91784 (Upland, CA)

Solar Energy Data for 91784

See the chart below to see how different types of solar panel installations compare in 91784.

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


Solar Energy Analysis for 91784

Solar Radiation Data in 91784

Based on historical 91784 data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in 91784. [1]

The region associated with 91784 has an average monthly Global Horizontal Irradiance (GHI) of 5.38 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 15% less than the average monthly Direct Normal Irradiance (DNI) of 6.33 kWh/m2/day. [1]

Solar installations in 91784 that are always titled at the latitude of Upland (Average Tilt at Latitude or ATaL) average 6.14 kWh/m2/day, or about 14% greater than the average monthly GHI of 5.38 kWh/m2/day and approximately 3% less than the average monthly DNI of 6.33 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 91784

Solar Radiation Data in 91784

See the chart below for monthly solar radiation levels in 91784.

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

Solar Radiation Analysis for 91784

Solar Radiation Data in 91784

The region associated with 91784 has a average annual solar radiation value of 6.28 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in 91784 is August with an average of 7.35 kWh/m2/day, followed by September at 7.08 kWh/m2/day and July at 6.95 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 91784 are December with an average of 5.18 kWh/m2/day, followed by January with an average of 5.34 kWh/m2/day and February at 5.73 kWh/m2/day. [1]

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Solar Power Comparison: 91784 vs. the U.S.

Solar Power Levels in 91784

The average monthly solar radiation level in 91784, of 6.28 kilowatt hours per square meter per day (kWh/m2/day) is approximately 60% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 5% 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: 91784 vs. the U.S.

Below is a month-by-month comparison of how average 91784 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 91784

Sunrise / Sunset in 91784

  • Sunrise/Sunset for March 18, 2024 [2]
    • Sunrise: 6:55 am
    • Sunset: 7:01 pm
    • Length of Day: 12:6
Solar Energy Statistics for 91784

Best Months for Solar in 91784

  • Top Solar Power Months Historically [1]
    • Solar Radiation August (7.35 kWh/m2/day)
    • ATaL: August (7.4 kWh/m2/day)
    • DNI: July (8.49 kWh/m2/day)
    • GHI: July (7.93 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 91784

We do not have data on solar panel installations in ZIP Code 91784 at the current time.

Solar Power Output in 91784

The Power of Solar in 91784

Monthly AC solar system output averages for 91784. Month-by-month solar power, as ranked by AC output, in 91784. [2]

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

Solar Output Analysis for 91784

Solar Radiation Data in 91784

91784 has a average annual solar AC output value of 6860.96 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 91784 is August with an average of 660.47 kWhac, followed by July at 625.53 kWhac and September at 620.8 kWhac. [2]

The three months that historically average the lowest average solar output levels in 91784 are February with an average of 490.39 kWhac, followed by December with an average of 503.26 kWhac and January at 507.31 kWhac. [2]

Weather Forecast for 91784 [5]

Mon Mar 18
68°F
Broken Clouds
Min: 53°F
Max: 70°F
Gentle Breeze: 8 mps NNE
Precip.: n/a
Humidity: 31%
Cloud cover: 74%
Tue Mar 19
69°F
Broken Clouds
Min: 53°F
Max: 71°F
Gentle Breeze: 8 mps SW
Precip.: n/a
Humidity: 32%
Cloud cover: 52%
Wed Mar 20
68°F
Sky Is Clear
Min: 54°F
Max: 71°F
Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 41%
Cloud cover: 0%
Thu Mar 21
65°F
Broken Clouds
Min: 54°F
Max: 70°F
Gentle Breeze: 9 mps SW
Precip.: n/a
Humidity: 51%
Cloud cover: 82%
Fri Mar 22
65°F
Few Clouds
Min: 54°F
Max: 70°F
Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 48%
Cloud cover: 11%
Sat Mar 23
54°F
Light Rain
Min: 50°F
Max: 55°F
Gentle Breeze: 8 mps SW
Precip.: Chance of Rain
Humidity: 72%
Cloud cover: 100%

More about 91784

About 91784

The ZIP code 91784 is associated with the city of Upland in San Bernardino County in California.

91784 Solar Power

91784 Solar Energy & Power

To learn more about solar energy and solar power in 91784, or for more solar-related resources for CA, 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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