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.
Solar energy is, simply, energy provided by the sun. This energy is in the form of solar radiation, which makes the production of solar electricity possible.
You can depend on solar panels. They don't have moving pieces, so when you buy a system, you can rest assured that you will not have to fix anything or buy any new parts. It takes very little effort on your part to create enough energy to power your home, making these systems a very attractive option for most people.