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]
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 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
Hilo, HI has a average annual solar radiation value of 4.36 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Hilo is January with an average of 4.72 kWh/m2/day, followed by February at 4.71 kWh/m2/day and October at 4.69 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Hilo (Hawaii) are June with an average of 3.84 kWh/m2/day, followed by April with an average of 4.08 kWh/m2/day and May at 4.16 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 4.36 kilowatt hours per square meter per day (kWh/m2/day) is approximately 11% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 34% 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: Hilo 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).
We do not currently have data on solar panel installations in the city of Hilo, HI at this current time.
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
Hilo (HI) has a average annual solar AC output value of 4964.88 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Hilo is January with an average of 458.95 kWhac, followed by October at 452.62 kWhac and March at 422.74 kWhac. [2]
The three months that historically average the lowest average solar output levels in Hilo (Hawaii) are June with an average of 359.31 kWhac, followed by April with an average of 382.06 kWhac and May at 402.96 kWhac. [2]
Cost of Utilities in Hilo
Hilo Electricity Costs
Sorry, Hilo residential electricity prices are currently unavailable.
Please check back later.
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?
Hilo Natural Gas Costs
Sorry, Hawaii residential natural gas prices are currently unavailable.
Gentle Breeze: 9 mps N
Precip.: Chance of Rain
Humidity: 70%
Cloud cover: 26%
Tue Dec 24
76°F
Light Rain
Min: 71°F
Max: 77°F
Gentle Breeze: 10 mps ESE
Precip.: Chance of Rain
Humidity: 66%
Cloud cover: 64%
Wed Dec 25
77°F
Light Rain
Min: 71°F
Max: 78°F
Moderate breeze: 13 mps ESE
Precip.: Chance of Rain
Humidity: 67%
Cloud cover: 56%
Thu Dec 26
77°F
Light Rain
Min: 70°F
Max: 77°F
Gentle Breeze: 11 mps ESE
Precip.: Chance of Rain
Humidity: 61%
Cloud cover: 15%
More about Hilo
About Hilo
The city of Hilo, HI in Hawaii County has an approximate population of 43,263. [6]
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?
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.