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Lowest Peak Sun hour; Sun Hours used in Off-Grid Calculations

This map shows the average value of total solar energy received in peak sun hours per day on an optimally tilted surface during the month with the lowest available sun light. This is the best number to use in off-grid system design where the electrical demand is continuous or is not expected to vary seasonally and the system must be designed to operate year around.

[Insolation: The amount of solar energy received over a unit of time per a unit of surface area. Often expressed as sun-hours, which is equivalent to kWh/m2. Most solar resource maps provide sun-hours per day. Sun-hour: A unit of solar insolation equivalent to 1 kWh/m2.]

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