In the northern hemisphere solar panel orientation is seen by some as unsuitable because they mainly point south. This enables them to generate the most electricity when the sun is highest in the sky and is shining straight down (or as near to perpendicular as possible) on the surface of tilted panels. This approach does allow the panels to generate the greatest possible amount of electricity, but not at the best time of day. This is because there are problems connecting intermittent sources of electricity to the grid. It seems midday electricity isn’t required so much as afternoon electricity. (I’m not sure what is required in the morning.)
More Info on Northern Hemisphere Solar Panel Orientation
Find out more detail about northern hemisphere solar panels pointing the wrong way in this article from The Telegraph.