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PostPosted: Tue Aug 27, 2013 9:47 am 

Joined: Tue Aug 27, 2013 9:40 am
Posts: 1
Hello. In the results output file, how does PVSyst manage the winter time and summer time ? Thank you


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PostPosted: Tue Aug 27, 2013 11:00 am 
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Joined: Mon Apr 16, 2012 7:29 pm
Posts: 1658
The winter/summer time (named DST - Daily Saving Time in the US) affects the simulation during the year.
It doesn't have any impact on the simulation results.
Except for the financial revenues if you have specific tariffs for specific legal hours: in this case you have to do your financial balance by yourself (in EXCEL), using the CSV hourly output file.

The DST is in principle defined in the Meteo data file.
However PVsyst (as many solar software and meteo data sources) doesn't take it into account, and renormalizes all the data in the same time (usually the winter time).
When you import an external meteo file which takes the DST into account, PVsyst corrects the values for getting homogeneous time definitions along the year.


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