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Solar panels should always face true south if you are in the northern hemisphere, or true north if you are in the southern hemisphere. True north is not the same as magnetic north. If you are using a compass to orient your panels, you need to correct for the difference, which varies from place to place.
Like Us on Facebook. More precisely, the current expert advise on solar panel installation would inform you that solar panels should face true north or true south depending on whether you are in southern or northern hemisphere, respectively. Incidentally, true north and magnetic north are different. In addition, the expert advice on solar panel tilt from horizontal is that the tilt should be equal to latitude plus 15 degrees in winter and minus 15 degrees in summer..