Fredy Posted November 21, 2017 Share Posted November 21, 2017 HelloWe are trying to do montlhy PR calculations, but when we do the final monthly average the value is different from the PVsyst final PR Could you please help us with this issue?Thank you for your supportBest Reggards Link to comment Share on other sites More sharing options...
adrie Posted November 21, 2017 Share Posted November 21, 2017 This is normal. Months with higher yield influence the annual PR more strongly. If you want to check, just calculate a weighted average values of the monthly PR (weighted by kWh). Link to comment Share on other sites More sharing options...
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