^^
Can you show us how you worked out the peak(?) power output of 45W please?
I'm a bit confused - the peak that I see is 1.3kWh on one day during week starting May 7th. This implied a total energy output of 4680000J Divide this by (24hours x 60mins x 60s) brings an average wattage of 54W that day??
Good catch, the system reports in 15 minute increments it turns out. Peak output was 42*4= 168W, *NOT* 42W.
Still, that's 12% of the rated output at noon. I would expect normal solar panels laid flat on the ground to product at least 3-4X that number.
It really looks like the system is failing. The attached images are from today. There is full sunlight, no shading at all, but the output is about 100W right now. The max output is down about 25% from the spring peak of 130W.
One could have simply bought a $250 panel and a $200 micro inverter, laid them flat on the ground and done as well or better than this project.