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Old 29-01-2021, 02:10   #1
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Mix two solar panels in parallel

Hi,
I have one 50W Sunware panel fixed installed and will get another one of 90W.
This together with the Victron MPPT 75/15 regulator.

Below the data of the two panels that I want to connect in parallel.

Sunware 50W:
Imax: 2.4A
Isc: 2.54A
Voc: 24.7V

Victron 90W:
Impp:4.59A
Isc: 5.03A
Voc: 24.06V
Vmpp: 19.6V

Will this be possible?
If I then calculate correct I take the lowest voltage that is 24.06V (Voc) and multiple with 6.99A that will give me 168W output in theory?
On the spec for the Sunware it does not state any Vmpp value so I used the Voc on both panels when calculate, probably not correct. But if I use the Vmpp voltage on the 90W panel as the lowest value I then get 137W?
Is this correct?
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Old 29-01-2021, 04:25   #2
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Re: Mix two solar panels in parallel

While not ideal to mix panels, your panels have a similar Voc which will allow them to work in parallel.
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Old 29-01-2021, 18:43   #3
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Re: Mix two solar panels in parallel

I'd just use two controllers; they're cheap and will give better performance...
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