From nominal W to real

I have a system made of 11- panels per string and 4 strings feeding into a fronius 11.1 Ig plus V uni.

In theory 44 panels of 255 should give me 11,220w.

How much should k really expect to produce in optimal conditions:

No clouds
Cool day: temp 85F


  • Cariboocoot
    Cariboocoot Banned Posts: 17,615 ✭✭✭
    Re: From nominal W to real

    On average the loss of power from panel rating to AC output on a GT system is 23%. So your 11,220 Watt array should produce 8,639 Watts.

    There are so many things that affect this that you may never see that exact number, or if you do it will be in passing. By the same token full array rating or even higher is possible momentarily.
  • solar_dave
    solar_dave Solar Expert Posts: 2,397 ✭✭✭✭
    Re: From nominal W to real

    Roughly your peak noon time output will be around 8500 to 9000 watts.