The 1st year PR in simple simulation was not as same as aging simulation, What did I do mistake?

[Project Complete]

I ran my condition in a simple simulation once and got a result for PR 76.97%. Then, I reran it in the aging tools simulation with the same condition and I got a result of PR 77.97% for the 1st year.

 

What did I do something mistake? 

 

Please, consult me to correct the result. 

[Linda Thoren]

Hi, 

First time you ran the simulation, did you use the aging tool in the detailed losses? in what year? When you activate the aging in the detailed losses, the first proposed value is to run the simulation for year 10, possibly the first PR correspond to year 10?

Kind regards

[Project Complete]

On 2/14/2025 at 10:20 PM, Linda Thoren said:

Hi, 

First time you ran the simulation, did you use the aging tool in the detailed losses? in what year? When you activate the aging in the detailed losses, the first proposed value is to run the simulation for year 10, possibly the first PR correspond to year 10?

Kind regards

I put the year in the aging dialogue for the 1st year instead of the year the 10th. Then I put the same value on the aging tools, too. 

[Linda Thoren]

See example below from the DEMO commercial project where indeed the first year simulation match the result from the aging tool. 

 

If your issue persists, please send your project as a .zip file to support@pvsyst.com

Kind regards 

[Tanatip]

Hi, may I know what is the version of PVsyst you used to simulate at the first time and second time?

Is it the same version of PVsyst?

[Linda Thoren]

Hello,

The two print screens in my post comes from the same report (version 7). A simulation in version 8 would normally look the same.

Kind regards