jamesbm Posted June 29, 2018 Report Share Posted June 29, 2018 Hi, I understand the update to the Metonorm database (R5) changed irradiance and therefore yield. Can you please explain in a bit more detail the recent update to calculating irradiance in R7? We have seen yield numbers change (sometimes dramatically) with the R5 update and again with R7. My concern is that there may be another change soon as the data source now seems to be Meteonorm 1981-1990. Is there a reason such old data is now being used? For funded projects a change in yield mid-way though development can cause us big problems. We are keen to understand what has changed, why and what may change next. I look forward to hearing your thoughts. Thanks James Quote Link to comment Share on other sites More sharing options...
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