Hello!
I made one solar plant with 1820 solar panels, each 450W. Total output 819kW with spec.annual yield 855,61 kwh/kwp. Grid feed in 700 955 kwh/year.
Then I changed all 1820 panels to 460W. Then total output was 837,20kW with spec.annual yield 831,37 kwh/kwp. Grid feed in 696 232 kwh/year.
My question - why the spec.annual yield and grid feed in drop off so much ? I am concerned because, the power of one module became bigger, but the spec. annual yield decreased.
Please see file attached.