Join Date: Jun 2011
Location: somewhere south of civilization
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Re: Solar panel partial shading
Our panels do just fine on the bimini. The boom is only a few inches above the panels when we aren't sailing, so shading is minimized. They are separated significantly which helps for both shading and viewing the sails when sailing. It really doesn't matter where you mount your panels, unless you have a mechanism that keeps them facing the sun 100% of the time, you will rarely get full power out of them. And of course, there's clouds as Mark mentioned.
Plan for enough wattage to keep you batteries filled at 1/2 efficiency or even less over the daylight period where you intend to use your boat. Don't forget to leave an air space behind the panels if you mount them on your bimini, as heat also diminishes their efficiency.
Below is a pic of ours, 10 years trouble free and counting.
"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.
“Believe me, my young friend, there is nothing - absolutely nothing - half so much worth doing as simply messing about in boats.” ― Kenneth Grahame, The Wind in the Willows
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Last edited by capta; 4 Weeks Ago at 01:49 PM.