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Solar Power in 98580 (Roy, WA)

Solar Energy in 98580

The month of August has the highest historical solar radition values in 98580 with an average of 5.93 kWh/m2/day. [More]

Solar Panels in 98580

Solar panels in 98580 that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in 98580

The total length of the day in 98580 (Roy, WA) today (June 02, 2025) will be 15 hours and 44 minutes. [More]

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98580 Solar Energy

Solar Energy in 98580 (Roy, WA)

Solar Energy Data for 98580

See the chart below to see how different types of solar panel installations compare in 98580.

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


Solar Energy Analysis for 98580

Solar Radiation Data in 98580

Based on historical 98580 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 98580. [1]

The region associated with 98580 has an average monthly Global Horizontal Irradiance (GHI) of 3.32 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 10% greater than the average monthly Direct Normal Irradiance (DNI) of 3.03 kWh/m2/day. [1]

Solar installations in 98580 that are always titled at the latitude of Roy (Average Tilt at Latitude or ATaL) average 3.79 kWh/m2/day, or about 14% greater than the average monthly GHI of 3.32 kWh/m2/day and approximately 25% greater than the average monthly DNI of 3.03 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 98580

Solar Radiation Data in 98580

See the chart below for monthly solar radiation levels in 98580.

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

Solar Radiation Analysis for 98580

Solar Radiation Data in 98580

The region associated with 98580 has a average annual solar radiation value of 3.94 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in 98580 is August with an average of 5.93 kWh/m2/day, followed by July at 5.75 kWh/m2/day and May at 5.21 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 98580 are January with an average of 1.88 kWh/m2/day, followed by December with an average of 2.05 kWh/m2/day and November at 2.09 kWh/m2/day. [1]

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Solar Power Comparison: 98580 vs. the U.S.

Solar Power Levels in 98580

The average monthly solar radiation level in 98580, of 3.94 kilowatt hours per square meter per day (kWh/m2/day) is approximately 0% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 40% 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: 98580 vs. the U.S.

Below is a month-by-month comparison of how average 98580 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 98580

Sunrise / Sunset in 98580

  • Sunrise/Sunset for June 02, 2025 [2]
    • Sunrise: 5:15 am
    • Sunset: 8:59 pm
    • Length of Day: 15:44
Solar Energy Statistics for 98580

Best Months for Solar in 98580

  • Top Solar Power Months Historically [1]
    • Solar Radiation August (5.93 kWh/m2/day)
    • ATaL: July (5.72 kWh/m2/day)
    • DNI: July (5.43 kWh/m2/day)
    • GHI: July (6.08 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 98580

We do not have data on solar panel installations in ZIP Code 98580 at the current time.

Solar Power Output in 98580

The Power of Solar in 98580

Monthly AC solar system output averages for 98580. Month-by-month solar power, as ranked by AC output, in 98580. [2]

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

Solar Output Analysis for 98580

Solar Radiation Data in 98580

98580 has a average annual solar AC output value of 4395.93 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 98580 is August with an average of 537.82 kWhac, followed by July at 524.15 kWhac and May at 489.69 kWhac. [2]

The three months that historically average the lowest average solar output levels in 98580 are January with an average of 187.5 kWhac, followed by November with an average of 201.67 kWhac and December at 205.29 kWhac. [2]

Weather Forecast for 98580 [5]

Mon Jun 2
69°F
Sky Is Clear
Min: 45°F
Max: 70°F
Gentle Breeze: 9 mps NE
Precip.: n/a
Humidity: 49%
Cloud cover: 0%
Tue Jun 3
70°F
Sky Is Clear
Min: 46°F
Max: 74°F
Gentle Breeze: 10 mps WSW
Precip.: n/a
Humidity: 40%
Cloud cover: 1%
Wed Jun 4
59°F
Overcast Clouds
Min: 51°F
Max: 64°F
Light breeze: 7 mps SW
Precip.: n/a
Humidity: 68%
Cloud cover: 100%
Thu Jun 5
74°F
Sky Is Clear
Min: 47°F
Max: 79°F
Light breeze: 7 mps NNE
Precip.: n/a
Humidity: 40%
Cloud cover: 2%
Fri Jun 6
67°F
Broken Clouds
Min: 51°F
Max: 72°F
Light breeze: 7 mps W
Precip.: n/a
Humidity: 59%
Cloud cover: 80%
Sat Jun 7
80°F
Scattered Clouds
Min: 49°F
Max: 83°F
Gentle Breeze: 8 mps NNE
Precip.: n/a
Humidity: 37%
Cloud cover: 48%

More about 98580

About 98580

The ZIP code 98580 is associated with the city of Roy in Pierce County in Washington.

98580 Solar Power

98580 Solar Energy & Power

To learn more about solar energy and solar power in 98580, or for more solar-related resources for WA, 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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