Based on historical Grafton, WI data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Grafton.[1]
Grafton has an average monthly Global Horizontal Irradiance (GHI) of 3.8 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% greater than the average monthly Direct Normal Irradiance (DNI) of 3.74 kWh/m2/day. [1]
Solar installations in Grafton that are always titled at the latitude of Grafton (Average Tilt at Latitude or ATaL) average 4.41 kWh/m2/day, or about 16% greater than the average monthly GHI of 3.8 kWh/m2/day and approximately 18% greater than the average monthly DNI of 3.74 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 Grafton
Solar Radiation Data in Grafton, WI
See the chart below for monthly solar radiation levels in Grafton.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Grafton, WI
Grafton, WI has a average annual solar radiation value of 4.66 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Grafton is July with an average of 6.21 kWh/m2/day, followed by June at 6 kWh/m2/day and August at 5.91 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Grafton (Wisconsin) are December with an average of 2.08 kWh/m2/day, followed by January with an average of 2.4 kWh/m2/day and November at 3.45 kWh/m2/day. [1]
Solar Power Comparison: Grafton vs. the U.S.
Solar Power Levels in Grafton
The average monthly solar radiation level in Grafton, WI, of 4.66 kilowatt hours per square meter per day (kWh/m2/day) is approximately 19% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 30% 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: Grafton vs. the U.S.
Below is a month-by-month comparison of how average Grafton 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 village of Grafton, WI at this current time.
Solar Power Output in Grafton
The Power of Solar in Grafton, WI
Monthly AC solar system output averages for Grafton (wi). Month-by-month solar power, as ranked by AC output, in Grafton. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Grafton, WI
Grafton (WI) has a average annual solar AC output value of 5405.31 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Grafton is July with an average of 581.08 kWhac, followed by May at 561.01 kWhac and August at 559.17 kWhac. [2]
The three months that historically average the lowest average solar output levels in Grafton (Wisconsin) are December with an average of 217.04 kWhac, followed by January with an average of 256.92 kWhac and November at 342.7 kWhac. [2]
Cost of Utilities in Grafton
Grafton Electricity Costs
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Solar Power Poll: Grafton
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Grafton Natural Gas Costs
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More about Grafton
About Grafton
The village of Grafton, WI in Ozaukee County has an approximate population of 11,459. [6]
Grafton, WI Solar Energy
To learn more about solar energy and solar power Grafton, WI, or for more solar-related resources for Grafton, visit the U.S. Energy Information Administration.
Did you know?
Solar cells convert sunlight into electricity through a physical process known as the photovoltaic effect.