Solar Energy & Solar Power Resources

Solar Energy in Kapaa, HI

Solar Energy in Kapaa

Sorry, historical solar radition values for Kapaa are currently unavailable, please check back later.

Solar Panels in Kapaa

Solar panels in Kapaa that will produce the maximum solar energy output. [More]

Sunrise & Sunset in Kapaa

The total length of the day in Kapaa, HI today (June 23, 2026) will be 13 hours and 32 minutes. [More]

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.

Historical solar power output data for Kapaa is not currently available.

Solar Energy Analysis for Kapaa, HI

Sorry, it is not possible to complete our solar energy analysis for Kapaa at this time.

Please check back later.

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 Kapaa

Solar Radiation Data in Kapaa, HI

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

Sorry, data is not currently available.

Solar Radiation Analysis for Kapaa, HI

Sorry, it is not possible to complete our solar radiation analysis for Kapaa at this time.

Historical solar radiation data for Kapaa is not currently available.

Please check back later.

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

Solar Power Levels in Kapaa

Sorry, solar radiation data for Hawaii is not currently available.

Solar Power: Kapaa 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]

Sorry, solar radiation data for Hawaii is not currently available.

Solar Data & Statistics for Kapaa

Sunrise / Sunset in Kapaa

Sunrise/Sunset for June 23, 2026 ^[2]
- Sunrise: 5:53 am
- Sunset: 7:25 pm
- Length of Day: 13:32

Best Months for Solar in Kapaa

Monthly data not currently available.

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.

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]

AC output data is not currently available.

Solar Output Analysis for Kapaa, HI

Sorry, it is not possible to complete our solar radiation analysis for Kapaa at this time.

Historical solar radiation data for Kapaa is not currently available.

Please check back later.

Cost of Utilities in Kapaa

Kapaa Electricity Costs

Sorry, Kapaa residential electricity prices are currently unavailable.

Please check back later.

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?

Kapaa Natural Gas Costs

Sorry, Hawaii residential natural gas prices are currently unavailable.

Please check back later.

Weather Forecast for Kapaa, HI ^[5]

Tue Jun 23

79°F

Light Rain
Min: 75°F
Max: 79°F

Moderate breeze: 14 mps ENE
Precip.: Chance of Rain
Humidity: 72%
Cloud cover: 25%

Wed Jun 24

78°F

Light Rain
Min: 75°F
Max: 78°F

Moderate breeze: 16 mps ENE
Precip.: Chance of Rain
Humidity: 74%
Cloud cover: 78%

Thu Jun 25

78°F

Light Rain
Min: 75°F
Max: 78°F

Moderate breeze: 16 mps ENE
Precip.: Chance of Rain
Humidity: 72%
Cloud cover: 100%

Fri Jun 26

77°F

Light Rain
Min: 75°F
Max: 78°F

Moderate breeze: 16 mps E
Precip.: Chance of Rain
Humidity: 77%
Cloud cover: 77%

Sat Jun 27

78°F

Light Rain
Min: 75°F
Max: 79°F

Moderate breeze: 16 mps E
Precip.: Chance of Rain
Humidity: 71%
Cloud cover: 50%

Sun Jun 28

78°F

Light Rain
Min: 75°F
Max: 79°F

Moderate breeze: 13 mps ENE
Precip.: Chance of Rain
Humidity: 68%
Cloud cover: 100%

More about Kapaa

About Kapaa

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

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.