Next Slideshow Best Blue Flowers for Your Garden Best Blue Flowers for Your GardenBest Blue Flowers for Your Garden Blue flowers add a cool touch to the landscape. Get the names of blue flowers and learn how to grow different types of blue flowers in your garden.
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.
The optimum compass direction for a house is facing N.E. Back of house would be S.W. Generally, the most windowed area of the house is the back. In the winter when the sun is low to the southern horizion, you get optimal exposure and heat gain. During the summer with the sun more overhead you have less heat gain. You can also reinforce that winter heat gain with a large stone/concrete interior wall that is exposed to the sun during the day.