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Solar Energy in Kapaa, HI

Solar Energy in Kapaa

The month of September has the highest historical solar radition values in Kapaa with an average of 5.91 kWh/m2/day. [More]

Solar Panels in Kapaa

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

Sunrise & Sunset in Kapaa

The total length of the day in Kapaa, HI today (December 14, 2017) will be 10 hours and 47 minutes. [More]

Kapaa, HI Solar Energy

Solar Power in Kapaa, HI

Solar Energy Data in Kapaa, HI

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

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


Solar Energy Analysis for Kapaa, HI

Solar Radiation Data in Kapaa

Based on historical Kapaa, 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 Kapaa. [1]

Kapaa has an average monthly Global Horizontal Irradiance (GHI) of 4.96 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 22% greater than the average monthly Direct Normal Irradiance (DNI) of 4.08 kWh/m2/day. [1]

Solar installations in Kapaa that are always titled at the latitude of Kapaa (Average Tilt at Latitude or ATaL) average 5.19 kWh/m2/day, or about 5% greater than the average monthly GHI of 4.96 kWh/m2/day and approximately 27% greater than the average monthly DNI of 4.08 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.

Compare Solar Quotes
Compare Solar Quotes

Solar Radiation Levels in Kapaa

Solar Radiation Data in Kapaa, HI

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

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

Solar Radiation Analysis for Kapaa, HI

Solar Radiation Data in Kapaa

Kapaa, HI has a average annual solar radiation value of 5.24 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Kapaa is September with an average of 5.91 kWh/m2/day, followed by August at 5.75 kWh/m2/day and June at 5.65 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Kapaa (Hawaii) are November with an average of 4.44 kWh/m2/day, followed by December with an average of 4.44 kWh/m2/day and January at 4.79 kWh/m2/day. [1]

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

Solar Power Levels in Kapaa

The average monthly solar radiation level in Kapaa, HI, of 5.24 kilowatt hours per square meter per day (kWh/m2/day) is approximately 40% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 21% 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 Kapaa 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).

Compare Solar Quotes
Compare Solar Quotes

Solar Data & Statistics for Kapaa

Sunrise / Sunset in Kapaa

  • Sunrise/Sunset for December 14, 2017 [2]
    • Sunrise: 7:08 am
    • Sunset: 5:56 pm
    • Solar Noon: 12:32 pm
    • Length of Day: 10:47
Solar Energy Statistics for Kapaa

Best Months for Solar in Kapaa

  • Top Solar Power Months Historically [1]
    • Solar Radiation September (5.91 kWh/m2/day)
    • ATaL: September (5.91 kWh/m2/day)
    • DNI: September (5.06 kWh/m2/day)
    • GHI: July (6.33 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Kapaa

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

However, Kapaa is in Kauai County and Kauai County has at least 399 solar insallations right now. [1]

Solar Power Output in Kapaa

The Power of Solar in Kapaa, HI

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

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

Solar Output Analysis for Kapaa, HI

Solar Radiation Data in Kapaa

Kapaa (HI) has a average annual solar AC output value of 5933.8 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Kapaa is August with an average of 549.47 kWhac, followed by September at 544.11 kWhac and July at 522.86 kWhac. [2]

The three months that historically average the lowest average solar output levels in Kapaa (Hawaii) are November with an average of 414.23 kWhac, followed by December with an average of 429.49 kWhac and February at 450.89 kWhac. [2]

Cost of Utilities in Kapaa

Kapaa Electricity Costs

Electricity prices (residential) in Kapaa averaged 29.03 cents per kilowatthour (¢/kWh) in September 2017, which was about 118% more than the overall U.S. average residential electricity rate of 13.30¢/kWh in September. [3]

Solar Power Poll: Kapaa

Vote now: Given all of the data and analysis provided for Kapaa, 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

Kapaa Natural Gas Costs

Natural gas prices (residential) in Hawaii averaged $39.98 per thousand cubic feet (Mcf) in September 2017, which was approximately 135% more than the overall U.S. average residential natural gas rate of $17.01 per Mcf in September. [4]

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Solar Businesses in Kapaa

Solar Energy Contractors in Kapaa

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

Sorry, no local solar energy contractors found.

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

Solar Energy Equipment in Kapaa

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

Sorry, no local business selling solar equipment were found.

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

Energy Conservation Consultants in Kapaa

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

Sorry, no local energy conservation specialists were found.

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

Weather Forecast for Kapaa, HI [5]

Wed Dec 13
65°F
Overcast Clouds
Min: 65°F
Max: 65°F
High wind, near gale: 16 mps NE
Precip.: n/a
Humidity: 93%
Cloud cover: 92%
Thu Dec 14
70°F
Sky Is Clear
Min: 65°F
Max: 72°F
: 17 mps NE
Precip.: n/a
Humidity: 83%
Cloud cover: 0%
Fri Dec 15
70°F
Light Rain
Min: 68°F
Max: 72°F
High wind, near gale: 15 mps NE
Precip.: Chance of Rain
Humidity: 93%
Cloud cover: 92%
Sat Dec 16
69°F
Moderate Rain
Min: 69°F
Max: 69°F
: 5 mps N
Precip.: Chance of Rain
Humidity: 100%
Cloud cover: 100%
Sun Dec 17
77°F
Light Rain
Min: 73°F
Max: 77°F
Fresh Breeze: 8 mps E
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 4%
Mon Dec 18
77°F
Light Rain
Min: 73°F
Max: 77°F
Fresh Breeze: 10 mps E
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 40%

More about Kapaa

About Kapaa

The city of Kapaa, HI in Kauai County has an approximate population of 10,699. [6]

Kapaa Solar Power

Kapaa, HI Solar Energy

To learn more about solar energy and solar power Kapaa, HI, or for more solar-related resources for Kapaa, visit the U.S. Energy Information Administration.

Did you know?

It takes light about 8 minutes, 19 seconds to travel the 93,000,000 miles from the sun's surface to us on Earth.

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References