Jig

Hi Linda, I'm not sure how to add a time zone to the datafile in a fashion that would be read by the software. I'll go ahead and email the data file to support@pvsyst.com and reference this thread. Thanks!!

Hi Linda, Here is how I have been doing it. This is the very first step I take when I start each project so there is nothing else in the project file yet. Click on Known Format below: Click on "Choose" below: Select file from NREL: File looks like this: Enter site name, select country, click "Get From Coordinates", click "Import". Then this file is created. Which has the offset: This process was working. Would you suggest something different?

I'm getting a similar error. I am importing a file from NREL. I'm using version 8.0. 153 seems like a strange amount to be off. There is no "date tab" that I can see in the raw data file. Also, I can take the -153 minutes out of this screen but if I click "Save", it just reverts back. Any suggestions? The NREL file looks normal and I've downloaded 3 separate files and they all throw an error like this.

Thank you, Muhammed. I see that site specific albedo data can be extracted from NREL's website at this link: NSRDB (nrel.gov) Are you aware of any software solutions that help estimate a monthly, site specific soiling estimate? That seems to be much more difficult to estimate. Thank you!

I would like to create the most accurate simulations possible while maintaining the worst case. However, some of the data that I'm inputting, I've had to give my best guess based on the site. Specifically, I'm concerned with site albedo and soiling. I'm doing my simulations well before the site is built. I'm working on ground mounted community solar projects in the range of 1.5MW to over 10MW using single axis trackers. Although, I would assume that this problem would apply to any type of solar installation. I'm interested to hear how some of the other PVSyst users in the community estimate these values. Are you using a special software package to make the estimations? Is there some other method? Or is it just simply your best guess?