jamesbm Posted May 8, 2018 Report Share Posted May 8, 2018 HI, I have noticed that 2 projects run using the same postcode with "create climate data for new location" have given very different irradiance values. The 995kWh/m2 value was produced on Friday with R5, the 876kWh/m2 was run today since the R6 update. Everything else is the same, as you can see it is the same Latitude and Longitude. PVGIS gives a value of 1030kWh/m2 so I am hoping it ends up being the higher of the 2 numbers. I have recently noticed values going up when rerunning projects after previous updates without any changes. Such large changes obviusly make a big difference to project economics, it is hard to be confident in the outputs. Are you able to explain what has changed since the update? Thanks James Quote Link to comment Share on other sites More sharing options...
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