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Bifacial solar panels have been around but these are now available as a semi-flexible panel too. Given the amount of light reflected off the water one would assume an increased output over a single sided panel if mounted appropriately and the figures in the brochure seem to back that up. Looks good for mounting on a bare bimini frame or a rear solar arch to get some extra watts from the same available space. http://www.giocosolutions.net/2face-bifacial/ No connection at all but here is their pricing. Pre-order ONLY 1.60 euro per W 115W 184.00 euros + VAT 130W 208.00 euros +
I've been giving some thought to systems for a boat with electric propulsion and recharging it. Obviously using solar panels is a pretty common solution for charging the battery bank but as most panels seem to mounted in a fixed position they are very rarely at the optimum position for maximum output. One option would be to mount the panels that would normally be fixed to an arch on tiltable and rotatable poles instead. It may mean less total panel area but would the efficiency gains of adjusting throughout the day be worth it? Here's a couple of examples and some anecdotal evidence from the p