Bryan Joshua

Hello there, Could you please explain how PVsyst calculates stored energy (90% DOD)? When the entire number of containers is multiplied by the 2752kWhr rated capacity of the BESS I'm using, the result is 4513.28MWhr x 0.90% DOD. I also attempt to use the rated capacity on the.BTR file, but it is inconsistent.

Thanks. The aging tool only consider the PV module degradation. Is there any other way to consider the BESS degradation on the .BTR file itself? do PVsyst have separate tab for BESS degradation? See attached BESS degradation sample. Also, the PVsyst BESS loss parameter only shows below losses. But in actual since the Battery RTE is 85% the battery global loss should be 15% and not 1.73%, right? may we know the reason why only 1.73% is reflected on the losses. Lastly the auxiliary loss parameter only considers the PV side. while the Cooling loss on the BESS happen in the BESS side the result will be incorrect if we consider the BESS cooling loss on the PV side. since our system is Grid type self-consumption and allows solar injection into grid. Thanks

How about the Cooling system or the Auxiliary loss of the BESS? at what losses does it include? Also, can we simulate a 25 years generation and put the 25years forecast degradation of the BESS?