Translations:Simplified weather and solar resource evaluation/13/en

For the purpose of PV system design, the solar resource for a given location is expressed as insolation in kWh/m². The insolation value for a location will vary each day throughout the year, therefore an off-grid PV system should be sized based upon the month with the lowest insolation or solar resource. This value will be used to size the PV source to ensure that system can generate enough energy to meet the demands for all loads and to recharge the battery bank during periods of poor weather. It is very important to use a conservative value for PV array sizing calculations.