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Solar Energy in Honolulu, HI

Solar Energy in Honolulu

The month of September has the highest historical solar radition values in Honolulu with an average of 5.23 kWh/m2/day. [More]

Solar Panels in Honolulu

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

Sunrise & Sunset in Honolulu

The total length of the day in Honolulu, HI today (July 23, 2018) will be 13 hours and 05 minutes. [More]

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Honolulu, HI Solar Energy

Solar Power in Honolulu, HI

Solar Energy Data in Honolulu, HI

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

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


Solar Energy Analysis for Honolulu, HI

Solar Radiation Data in Honolulu

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

Honolulu has an average monthly Global Horizontal Irradiance (GHI) of 3.89 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 35% greater than the average monthly Direct Normal Irradiance (DNI) of 2.88 kWh/m2/day. [1]

Solar installations in Honolulu that are always titled at the latitude of Honolulu (Average Tilt at Latitude or ATaL) average 4.06 kWh/m2/day, or about 4% greater than the average monthly GHI of 3.89 kWh/m2/day and approximately 41% greater than the average monthly DNI of 2.88 kWh/m2/day. [1]

* See glossary & definitions below.

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 Honolulu

Solar Radiation Data in Honolulu, HI

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

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

Solar Radiation Analysis for Honolulu, HI

Solar Radiation Data in Honolulu

Honolulu, HI has a average annual solar radiation value of 4.81 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Honolulu is September with an average of 5.23 kWh/m2/day, followed by June at 5.22 kWh/m2/day and August at 5.21 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Honolulu (Hawaii) are November with an average of 4.24 kWh/m2/day, followed by December with an average of 4.35 kWh/m2/day and January at 4.36 kWh/m2/day. [1]

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

Solar Power Levels in Honolulu

The average monthly solar radiation level in Honolulu, HI, of 4.81 kilowatt hours per square meter per day (kWh/m2/day) is approximately 29% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 27% 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: vs. the U.S.

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

Sunrise / Sunset in Honolulu

  • Sunrise/Sunset for July 23, 2018 [2]
    • Sunrise: 5:57 am
    • Sunset: 7:02 pm
    • Solar Noon: 12:29 pm
    • Length of Day: 13:05
Solar Energy Statistics for Honolulu

Best Months for Solar in Honolulu

  • Top Solar Power Months Historically [1]
    • Solar Radiation September (5.23 kWh/m2/day)
    • ATaL: January (4.4 kWh/m2/day)
    • DNI: January (3.75 kWh/m2/day)
    • GHI: July (4.31 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Honolulu

We do not currently have data on solar panel installations in the city of Honolulu, HI at this current time.

However, Honolulu is in Honolulu County and Honolulu County has at least 856 solar insallations right now. [1]

Solar Power Output in Honolulu

The Power of Solar in Honolulu, HI

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

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

Solar Output Analysis for Honolulu, HI

Solar Radiation Data in Honolulu

Honolulu (HI) has a average annual solar AC output value of 5431.37 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Honolulu is August with an average of 496.63 kWhac, followed by June at 482.85 kWhac and September at 479.08 kWhac. [2]

The three months that historically average the lowest average solar output levels in Honolulu (Hawaii) are November with an average of 394.32 kWhac, followed by December with an average of 417.7 kWhac and January at 420.64 kWhac. [2]

Cost of Utilities in Honolulu

Honolulu Electricity Costs

Electricity prices (residential) in Honolulu averaged 31.21 cents per kilowatthour (¢/kWh) in April 2018, which was about 142% more than the overall U.S. average residential electricity rate of 12.89¢/kWh in April. [3]

Solar Power Poll: Honolulu

Vote now: Given all of the data and analysis provided for Honolulu, is solar power a good choice for residents of this city?

Yes, solar power is a great option  
No, solar power isn't a good option

Honolulu Natural Gas Costs

Natural gas prices (residential) in Hawaii averaged $42.51 per thousand cubic feet (Mcf) in April 2018, which was approximately 320% more than the overall U.S. average residential natural gas rate of $10.12 per Mcf in April. [4]

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Solar Businesses in Honolulu

Solar Energy Contractors in Honolulu

Contractors & builders that specialize in solar panel installations in or near Honolulu, HI.

Sorry, no local solar energy contractors found.

Our search for solar contractors companies located in Honolulu produced no matches.

Solar Energy Equipment in Honolulu

Businesses that sell solar energy equipment and/or solar parts in or near Honolulu, HI.

Sorry, no local business selling solar equipment were found.

Our search for companies selling solar parts located in Honolulu produced no matches.

Energy Conservation Consultants in Honolulu

Energy conservation specialists that offer consulting services in or near Honolulu, HI.

Sorry, no local energy conservation specialists were found.

Our search for energy conservation specialists located in Honolulu produced no matches.

Weather Forecast for Honolulu, HI [5]

Sun Jul 22
68°F
Sky Is Clear
Min: 68°F
Max: 70°F
Light breeze: 2 mps NW
Precip.: n/a
Humidity: 97%
Cloud cover: 0%
Mon Jul 23
79°F
Sky Is Clear
Min: 74°F
Max: 81°F
Strong breeze: 13 mps ESE
Precip.: n/a
Humidity: 100%
Cloud cover: 0%
Tue Jul 24
80°F
Sky Is Clear
Min: 79°F
Max: 81°F
Fresh Breeze: 10 mps ESE
Precip.: n/a
Humidity: 100%
Cloud cover: 0%
Wed Jul 25
80°F
Light Rain
Min: 78°F
Max: 81°F
Gentle Breeze: 3 mps E
Precip.: Chance of Rain
Humidity: 98%
Cloud cover: 0%
Thu Jul 26
79°F
Moderate Rain
Min: 78°F
Max: 79°F
Gale: 19 mps E
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 48%
Fri Jul 27
78°F
Heavy Intensity Rain
Min: 77°F
Max: 78°F
High wind, near gale: 16 mps ENE
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 28%

More about Honolulu

About Honolulu

The city of Honolulu, HI in Honolulu County has an approximate population of 337,256. [6]

Honolulu Solar Power

Honolulu, HI Solar Energy

To learn more about solar energy and solar power Honolulu, HI, or for more solar-related resources for Honolulu, visit 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.

Other Cities in Hawaii

ZIP Codes in HI


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References