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diy solar

diy solar

Angle or shade on 2s2p

Solar HomeLab

New Member
Joined
Feb 18, 2025
Messages
11
Location
United Kingdom
Sorry if this is stupid question to ask but, thanks to some earlier replies to another post I now understand what 2 series 2 parallel is and I have just changed setup to this and checked my voltages all good.

However when I was on my roof I then got to thinking does it matter which panels are in series when you have different angles?

On my setup I have 4 panels in 2 rows, The back panels I can increase the angle and get the required 35 to 45 degree depending on season however the front 2 panels I can only get an angle of around 10 degrees. The panels are facing south however I have a large tree in the garden which is directly south facing therefore I get shade on all panels.

My question is at the moment I have my panels on the east side connected in series and my west side panels in series. However the front panel on each west and east is at 10 degrees while the other is at the 38 degrees.

Therefore whats provides more output angle or shade?

If I understand correctly then I best to have 2 panels in direct sunlight instead of one panel in sunlight and one shaded.

Thank you in advance
J
 
Your understanding above is correct. Bettery to have 2 in direct vs. 1 in and 1 out of sun in series.
I think you're saying you have 8 panels total;
4 panels in a row
2 rows - one at 10 degrees, and one at 35 degrees or so.
and you want to know how to connect them best.
You are considering connecting all 4 panels in series that are at 35 degrees, and all 4 panels in another series string that are at 10 degrees.
Is that correct?
I would not connect one at 10 degrees with one that is 35 degrees in series.
What MPPT do you have?
 

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