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Solar Energy in Hilo, HI

Solar Energy in Hilo

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

Solar Panels in Hilo

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

Sunrise & Sunset in Hilo

The total length of the day in Hilo, HI today (December 17, 2017) will be 10 hours and 56 minutes. [More]

Hilo, HI Solar Energy

Solar Power in Hilo, HI

Solar Energy Data in Hilo, HI

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

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


Solar Energy Analysis for Hilo, HI

Solar Radiation Data in Hilo

Based on historical Hilo, 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 Hilo. [1]

Hilo has an average monthly Global Horizontal Irradiance (GHI) of 4.93 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 19% greater than the average monthly Direct Normal Irradiance (DNI) of 4.16 kWh/m2/day. [1]

Solar installations in Hilo that are always titled at the latitude of Hilo (Average Tilt at Latitude or ATaL) average 5.12 kWh/m2/day, or about 4% greater than the average monthly GHI of 4.93 kWh/m2/day and approximately 23% greater than the average monthly DNI of 4.16 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.

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Solar Radiation Levels in Hilo

Solar Radiation Data in Hilo, HI

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

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

Solar Radiation Analysis for Hilo, HI

Solar Radiation Data in Hilo

Hilo, 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 Hilo is September with an average of 5.23 kWh/m2/day, followed by June at 5.21 kWh/m2/day and August at 5.2 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Hilo (Hawaii) are November with an average of 4.25 kWh/m2/day, followed by December with an average of 4.37 kWh/m2/day and January at 4.37 kWh/m2/day. [1]

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

Solar Power Levels in Hilo

The average monthly solar radiation level in Hilo, 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 Hilo 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 Hilo

Sunrise / Sunset in Hilo

  • Sunrise/Sunset for December 17, 2017 [2]
    • Sunrise: 4:48 pm
    • Sunset: 3:45 am
    • Solar Noon: 10:17 pm
    • Length of Day: 10:56
Solar Energy Statistics for Hilo

Best Months for Solar in Hilo

  • Top Solar Power Months Historically [1]
    • Solar Radiation September (5.23 kWh/m2/day)
    • ATaL: July (5.74 kWh/m2/day)
    • DNI: July (5.26 kWh/m2/day)
    • GHI: July (6.23 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Hilo

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

However, Hilo is in Hawaii County and Hawaii County has at least 483 solar insallations right now. [1]

Solar Power Output in Hilo

The Power of Solar in Hilo, HI

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

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

Solar Output Analysis for Hilo, HI

Solar Radiation Data in Hilo

Hilo (HI) has a average annual solar AC output value of 5430.78 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Hilo is August with an average of 495.85 kWhac, followed by June at 481.45 kWhac and September at 478.97 kWhac. [2]

The three months that historically average the lowest average solar output levels in Hilo (Hawaii) are November with an average of 395.14 kWhac, followed by December with an average of 418.99 kWhac and January at 421.72 kWhac. [2]

Cost of Utilities in Hilo

Hilo Electricity Costs

Electricity prices (residential) in Hilo 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: Hilo

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

Hilo 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 Hilo

Solar Energy Contractors in Hilo

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

Sorry, no local solar energy contractors found.

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

Solar Energy Equipment in Hilo

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

Sorry, no local business selling solar equipment were found.

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

Energy Conservation Consultants in Hilo

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

Sorry, no local energy conservation specialists were found.

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

Weather Forecast for Hilo, HI [5]

Sun Dec 17
70°F
Light Rain
Min: 70°F
Max: 73°F
Fresh Breeze: 9 mps SSE
Precip.: Chance of Rain
Humidity: 100%
Cloud cover: 32%
Mon Dec 18
74°F
Scattered Clouds
Min: 73°F
Max: 75°F
Moderate breeze: 7 mps SE
Precip.: n/a
Humidity: 100%
Cloud cover: 44%
Tue Dec 19
75°F
Light Rain
Min: 74°F
Max: 75°F
Fresh Breeze: 8 mps SSE
Precip.: Chance of Rain
Humidity: 100%
Cloud cover: 88%
Wed Dec 20
73°F
Moderate Rain
Min: 72°F
Max: 73°F
Light breeze: 3 mps NW
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 77%
Thu Dec 21
72°F
Moderate Rain
Min: 72°F
Max: 73°F
Strong breeze: 10 mps WNW
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 46%
Fri Dec 22
74°F
Light Rain
Min: 72°F
Max: 74°F
Light breeze: 2 mps WNW
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 3%

More about Hilo

About Hilo

The city of Hilo, HI in Hawaii County has an approximate population of 43,263. [6]

Hilo Solar Power

Hilo, HI Solar Energy

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

Did you know?

Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.

Other Cities in Hawaii

ZIP Codes in HI


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References