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lawrosa's avatar
lawrosa
Explorer
Dec 18, 2017

Solar question. Two panels same 24v , Series/parallel math

OK. So I have these panels. 280 watt LG,s I currently use one with an ecoworth 20 amp mppt. Max volts is 50 volts for controller hence one panel.. I can get 17 amps or so out of it normally... T...
CA_Traveler's avatar
CA_Traveler
Explorer III
Dec 19, 2017
To expand on BFL13's comment. Another factor is the cost in watts/dollar. 24V panels are about half of 12V panels.

In 2014 my cost for the 3 panels, installation and the higher end MPPT 60 controller was $100 more than the equivalent watts 12V parallel panel installation. For me that was a no brainer decision.

Those with existing 12V panels often reach a different conclusion.

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