The best solar panels are able to be re-positioned to accommodate the seasonal shifting of the sun. But if you have to have a fixed panel, choose the best compromise between positions that you can.
Your solar panels should be able to get a maximum amount of light form the sun. If you are set against hiring a professional to assist you, you can start tracking the sun's movements yourself to calculate the best positioning.
Forget the salesman or the confusing websites, this video will show you what a solar panel system REALLY costs. From the most basic starter kit to a whole …
Do not clean your solar panels with abrasive chemicals. You should use some lukewarm water, a soft cloth and some biodegradable soap if needed. Clean your panels at least once a month or more frequently if you notice your green energy system is not producing as much power as it should.