Based on historical Watertown, SD data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Watertown.[1]
Watertown has an average monthly Global Horizontal Irradiance (GHI) of 3.88 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 8% less than the average monthly Direct Normal Irradiance (DNI) of 4.24 kWh/m2/day. [1]
Solar installations in Watertown that are always titled at the latitude of Watertown (Average Tilt at Latitude or ATaL) average 4.57 kWh/m2/day, or about 18% greater than the average monthly GHI of 3.88 kWh/m2/day and approximately 8% greater than the average monthly DNI of 4.24 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 Watertown
Solar Radiation Data in Watertown, SD
See the chart below for monthly solar radiation levels in Watertown.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Watertown, SD
Watertown, SD has a average annual solar radiation value of 4.97 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Watertown is July with an average of 6.49 kWh/m2/day, followed by August at 6.23 kWh/m2/day and June at 6.03 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Watertown (South Dakota) are December with an average of 2.85 kWh/m2/day, followed by January with an average of 3.21 kWh/m2/day and November at 3.63 kWh/m2/day. [1]
Solar Power Comparison: Watertown vs. the U.S.
Solar Power Levels in Watertown
The average monthly solar radiation level in Watertown, SD, of 4.97 kilowatt hours per square meter per day (kWh/m2/day) is approximately 26% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 25% 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: Watertown vs. the U.S.
Below is a month-by-month comparison of how average Watertown 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 Watertown, SD at this current time.
Solar Power Output in Watertown
The Power of Solar in Watertown, SD
Monthly AC solar system output averages for Watertown (sd). Month-by-month solar power, as ranked by AC output, in Watertown. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Watertown, SD
Watertown (SD) has a average annual solar AC output value of 5737.9 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Watertown is July with an average of 603.15 kWhac, followed by August at 577.8 kWhac and May at 565.2 kWhac. [2]
The three months that historically average the lowest average solar output levels in Watertown (South Dakota) are December with an average of 299.16 kWhac, followed by January with an average of 340.08 kWhac and November at 360.3 kWhac. [2]
Cost of Utilities in Watertown
Watertown Electricity Costs
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Solar Power Poll: Watertown
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Watertown Natural Gas Costs
Sorry, South Dakota residential natural gas prices are currently unavailable.
The city of Watertown, SD in Codington County has an approximate population of 21,482. [6]
Watertown, SD Solar Energy
To learn more about solar energy and solar power Watertown, SD, or for more solar-related resources for Watertown, visit the U.S. Energy Information Administration.
Did you know?
Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.