Performance Ratio too high

[Finn]

Greetings,

I am simulating a building with a large number of modules. The installed capacity is 4000 kWp and the simulated production is 9 760 000 kWh/year. This gives a performance ratio of 221,8 %

This performance ratio is clearly not feasible. I have simulated the same project in Solysun and the simulated production is 2 700 000 kWh/year. PR is approximately 85 %. 

How do I fix this error to have a more feasible performance ratio for my project?

 

 

Best regards,

 

[developer_mh]

Hi Finn,

a performance ratio of over 100% is physically impossible, you are correct Could you provide the project where this occurs? You can send it to me here in the forum as private message.

Kind regards,

Martin

[Finn]

Hi Martin,

I have send you my project as a private message. 

Thank you for taking your time looking at the project

 

Best regards, 

[developer_mh]

Hi Finn,

the problem is the PV module "JW-HD144N-570" which was user created. It has wrong low light values:

Please check the values again, then it should be fine.

Kind regards,

Martin

[Finn]

Hi Martin,

I understand the problem. Thanks for looking into it for me.

I am not sure what value I should input for low light values. The module I was trying to create was the new Jolywood JW-HD144N / 570 W

Can you suggest an appropriate value for this module?

 

I have attached the sheet for the module. 

 

Best regards, 

JW-HD144N-550-575.pdf

[developer_mh]

Hi Finn,

if unsure, just select the "Standard low-light behaviour".

Kind regards,

Martin