See the chart below to see how different types of solar panel installations compare in Rockford.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Rockford, WA data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in Rockford. [1]
Rockford has an average monthly Global Horizontal Irradiance (GHI) of 3.92 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 16% less than the average monthly Direct Normal Irradiance (DNI) of 4.69 kWh/m2/day. [1]
Solar installations in Rockford that are always titled at the latitude of Rockford (Average Tilt at Latitude or ATaL) average 4.66 kWh/m2/day, or about 19% greater than the average monthly GHI of 3.92 kWh/m2/day and approximately 1% less than the average monthly DNI of 4.69 kWh/m2/day. [1]
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: 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: 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.
See the chart below for monthly solar radiation levels in Rockford.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Rockford, WA has a average annual solar radiation value of 4.59 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Rockford is July with an average of 7.28 kWh/m2/day, followed by August at 7 kWh/m2/day and June at 6.17 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Rockford (Washington) are December with an average of 1.73 kWh/m2/day, followed by January with an average of 1.88 kWh/m2/day and November at 2.26 kWh/m2/day. [1]
The average monthly solar radiation level in Rockford, WA, of 4.59 kilowatt hours per square meter per day (kWh/m2/day) is approximately 17% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 31% 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).
Below is a month-by-month comparison of how average Rockford 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 town of Rockford, WA at this current time.
Monthly AC solar system output averages for Rockford (wa). Month-by-month solar power, as ranked by AC output, in Rockford. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Rockford (WA) has a average annual solar AC output value of 5125.71 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Rockford is July with an average of 652.19 kWhac, followed by August at 633.92 kWhac and June at 556.97 kWhac. [2]
The three months that historically average the lowest average solar output levels in Rockford (Washington) are December with an average of 175.43 kWhac, followed by January with an average of 190.8 kWhac and November at 222.01 kWhac. [2]
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The town of Rockford, WA in Spokane County has an approximate population of 470. [6]
To learn more about solar energy and solar power Rockford, WA, or for more solar-related resources for Rockford, visit the U.S. Energy Information Administration.
Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.
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