Based on historical Saint Louis, MO data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Saint Louis.[1]
Saint Louis has an average monthly Global Horizontal Irradiance (GHI) of 4.21 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% less than the average monthly Direct Normal Irradiance (DNI) of 4.32 kWh/m2/day. [1]
Solar installations in Saint Louis that are always titled at the latitude of Saint Louis (Average Tilt at Latitude or ATaL) average 4.87 kWh/m2/day, or about 16% greater than the average monthly GHI of 4.21 kWh/m2/day and approximately 13% greater than the average monthly DNI of 4.32 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 Saint Louis
Solar Radiation Data in Saint Louis, MO
See the chart below for monthly solar radiation levels in Saint Louis.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Saint Louis, MO
Saint Louis, MO has a average annual solar radiation value of 5.06 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Saint Louis is July with an average of 5.98 kWh/m2/day, followed by September at 5.92 kWh/m2/day and June at 5.9 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Saint Louis (Missouri) are December with an average of 3.48 kWh/m2/day, followed by January with an average of 3.97 kWh/m2/day and November at 4.21 kWh/m2/day. [1]
Solar Power Comparison: Saint Louis vs. the U.S.
Solar Power Levels in Saint Louis
The average monthly solar radiation level in Saint Louis, MO, of 5.06 kilowatt hours per square meter per day (kWh/m2/day) is approximately 29% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 23% 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: Saint Louis vs. the U.S.
Below is a month-by-month comparison of how average Saint Louis 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 Saint Louis, MO at this current time.
Solar Power Output in Saint Louis
The Power of Solar in Saint Louis, MO
Monthly AC solar system output averages for Saint Louis (mo). Month-by-month solar power, as ranked by AC output, in Saint Louis. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Saint Louis, MO
Saint Louis (MO) has a average annual solar AC output value of 5700.19 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Saint Louis is July with an average of 546.51 kWhac, followed by August at 538.68 kWhac and June at 529.38 kWhac. [2]
The three months that historically average the lowest average solar output levels in Saint Louis (Missouri) are December with an average of 355.49 kWhac, followed by November with an average of 402.33 kWhac and February at 405.78 kWhac. [2]
Cost of Utilities in Saint Louis
Saint Louis Electricity Costs
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Solar Power Poll: Saint Louis
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Saint Louis Natural Gas Costs
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Gentle Breeze: 11 mps SE
Precip.: Chance of Rain
Humidity: 98%
Cloud cover: 100%
Wed Dec 25
46°F
Moderate Rain
Min: 46°F
Max: 49°F
Gentle Breeze: 10 mps SE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%
Thu Dec 26
52°F
Light Rain
Min: 49°F
Max: 53°F
Gentle Breeze: 12 mps SE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%
More about Saint Louis
About Saint Louis
The city of Saint Louis, MO in Saint Louis County has an approximate population of 319,294. [6]
Saint Louis, MO Solar Energy
To learn more about solar energy and solar power Saint Louis, MO, or for more solar-related resources for Saint Louis, 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.
