I am installing ground mounted solar hot water heater panels for my pool. The location is south facing and sloped. I have used the California Solar Initiative (CSI) calculator to determine the optimum tilt and azimuth to maximize the solar heat into the pool during the months of March/April and October/November. I am assuming my panels will have excess capacity to heat my pool in the months of May through September. The CSI calculator is set up for electric solar panels, but I'm assuming the heat generation will be proportional. I have determined 190 Deg azimuth and 42 Deg tilt will generate about 5% more in the shoulder months and 2% more overall than the 180 Deg azimuth and 17 Deg tilt normally recommended. I realize this is pretty small but I don't see any downside and wondering if anyone has some thoughts about this. Comments are appreciated.
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Pool Solar Tilt and Azimuth