The average monthly solar radiation level in Montana's capital city, Helena, of 4.85 kilowatt hours per square meter per day (kWh/m2/day) is approximately 23% greater than the average level of 3.93 kWh/m2/day in an area with historically low levels (WA) and is approximately 27% less than the average level of 6.61 kWh/m2/day in an area with historically high levels (NV). [1]
→ Values listed as 0 (zero) are not available (N/A).
→ Montana values listed here are based on the capital, Helena.
Below is a month-by-month comparison of how average Montana solar radiation levels compare to average levels in an area with historcially high levels (NV) and one 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).
→ Montana values listed here are based on the capital, Helena.
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Montana ranks 43rd among all states in the U.S. with a population of approximately 989,415. [4]
To learn more about solar energy and solar power in Montana, or for additional solar-related resources in MT, visit the U.S. Energy Information Administration.
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