Solar panels for 120Ah per day usage

Your suggestions please for solar panels for a narrowboat with 675Ah battery bank and 120+ Ah daily demand
Thankyou, Alan

120Ah per day is a fair demand, so I would first try to reduce demand to make things as efficient as possible! If you have a look at our solar panel calculator, in part three you can put in the power output from a solar panel array and see how much you can expect to get from it. So the 64W panel that is there for an example will give you around 26Ah in summer on average, going down to around 5Ah in winter.

The adhesive-backed solar panels we sell are definately the neatest solution. Great for narrowboats. The Unisolar or Kyocera framed panels are a little cheaper, but are not as discreet or so easily mounted. Personally I would go for four of the adhesive-backed panels, with a Prostar 30A controller - I would expect those would make you nearly free of other charging sources in the summer, although you would still need to top up by other means in the winter.