Is this normal? solar production

[theimportanceofbeing]

Hi all ,

I have 6x425w panels , 2s3p , mounted on a flat roof gently sloping east
Victron smart mppt 150/70 , 15kwh of AMG batteries

2550w array total ,

My question is this , the panels are making 2815w pmax on some days, well over their rated output, is this normal?

(The system is making plenty of power , 16kwh+ on some days, so I'm not complaining, just wondering )

 

[Shinzul]

If the panels are colder and it's very sunny, it's relatively common for panels to overproduce.

 

[Mattb4]

Possibly but it is also possible that your measurement of actual power produced is inaccurate.

 

[theimportanceofbeing]

Possibly but it is also possible that your measurement of actual power produced is inaccurate.

It's the mppts built in monitor , so I'd probably have to take that one up with the Dutch

 

[hwy17]

Cloud edging can cause overproduction.

On a pure sunny day if you are reading overproduction I would bet that it's an inaccurate measurement.

 

[ULR]

Are the panels bifacial? Those are rated for the front side output only, and light on the backside gives you some bonus power.

Are there light-colored objects nearby that might be reflecting or diffusing some sunlight onto the panels from additional directions?

You're only talking 10.4% extra, so it wouldn't take much extra light, or other more favorable operating conditions (e.g. low temperature compared to standard test conditions) to give it to you. Also: the panels might be rated at less than their actual when-new output, so they'll stay within warranted output longer.

Meanwhile, enjoy the bonus juice.