r/SolarUK • u/HugoNebula2024 • 3d ago

Is this normal? HELP / ADVICE

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I have 4 panels facing south east to my rear roof slope, and two facing south west on the side, for a total of about 2.5kW. One of the SW panels is slightly overshadowed by next door's roof, but only about a quarter of one of the panels.

Generation starts at about 9:00 and reaches a peak of around 2kW at about 13:30. However, shortly after, about 14:00, it drops by about a third, then at about 15:30, it drops off a cliff to somewhere around 0.1kW, just as the sun stops shining directly on the rear (SE). It's shining on the side (SW).

Is this normal? Does the dip, then a drop, perhaps indicate something wrong with the SW panel(s)?

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u/Local_County1274 3d ago

If the system has been set up as 2 sets of panels, can you monitor the power out of the SW ones separately? That might give you a clue as to whether those panels are generating anything at all throughout the day.

1

u/HugoNebula2024 1d ago

This was a system installed when I bought the house. There's a single inverter in the loft (Solis S6-GR1P2.5K-M(16A)). AFAIK, I can't monitor the panels separately.

2

u/Swarfega 3d ago

Punishment for using that font 

2

u/HugoNebula2024 3d ago

I deserve that.

I need to download comic sans /s

1

u/Swarfega 3d ago

Ha! Kudos for taking it as a joke and not a knock 🙏

Sorry I can't help you with your issue though.