One of the biggest problems on sailing boats with solar panels is shading. There is so much gear that can shade the panel! These two photos illustrate it exactly. But note that we are developing flexible smaller panels... in each case there are two panels not one. Hence, in the first photo, one of the panels has 40% shaded (low output) and the other 5-10% shaded (close to full output). On the other side of the boat one of the panels is 100% shaded (almost no output) and the other 5% shaded (almost full output). If these were single large panels then they both would be significantly reduced output power.
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