The Peak Sun-Hours reflected in the global solar power maps may differ
from other sun-hour figures available because these global maps represent
the worst case seasonal PSH (Kilowatt-hrs/m²/day) values used for
calculating year-round applications. For solar power applications requiring
performance throughout the entire year, the lowest monthly average Peak
Sun Hours is used as the baseline - usually the winter low average. For
summer-time only solar power applications, the figures in the global maps
would need to be considered since summer-time averages are often 30 - 40
percent higher.
For a review of the both the high and low Peak Sun-Hours of U.S. major
cities, please click here.
