I think you can do a batch download via an excel file of several days ( I think I did this for each month). If I recall correctly, when I registered with pvoutput, I exported previous monthsβ days from my monitoring application as excel files, perform the necessary corrections and removed any non-necessary columns/data and formatted the info that was compatible for a PVVoutput batch upload for that range of dates and tested it. While it placed the correct info in the correct areas, I chose not to try to import temp datas. This may have changed from 2013 when I did this.