ErikS

Hi Andre, thank you for your offer to review the input files. Please find the .MEF file , the .SIT file and the data file (.CSV) file in the attached zip file. I also attached the project file, module and inverter file for your reference. Thank you for your thoughts. Please let me know if you need anything else. Cheers, Erik CSVandMEFfiles.zip Reference files for Data Import question

Hi there, I am trying to compare actually measured production meter production data for an active 300kWp solar pv installation with PVsyst modeled data using meteo data recorded at the site. The met data at the site are limited to GPOA (Global at Plane of Array), Module Temperature (Temperature of Modules in Array), and wind speed at elevation of array. Using the "Import ASCII meteo file" tool in PVsyst 5.66 and selecting GPOA, Tmod, and WS, I was able to create a +/- 30 day hourly climate file. The GPOA values and wind velocity values within this created hourly file coincide very well with the imported data set. The Array Temperature Data however do not appear to have imported to the created climate file. I should probably also mention that in combination with this measured data import I used a "Site File" that included historic monthly GHI, Ambient Temperature, Diffuse and wind speed values. I'd really appreciate feedback on if I am not importing actual measured Array Temperatures due to User Error, a Software bug, or limitations withing PVsyst. Thank you for your thoughts in advance.

I might be a little late in my reply on this post, however, I'd like to point out that using measured data will have pros and cons. If you'd like to estimate PV production for a possible future project you would have to take your measured data (of a limited time period) and create a long term data set using other data sets with longer overlapping data record period (several years preferred). You could for example correlate your measured data with a long term satellite data set (for example solar anywhere or Solar GIS). This way you will have a much more reliable picture of the long term solar resource rather than a very limited snap shot of the solar resource during your measurement period. If you however already have solar PV installation in place and you would like to compare the actual production with the modeled production (for example to verify that the system runs properly), then using the measured data would be perfect. Hope these thoughts help. Cheers