Many solar systems require little or no maintenance to operate smoothly throughout the year, but you should have them service occasionally. Dirt, leaves and dust can accumulate and reduce the amount of power that your system can produce. Have a licensed installer come out regularly to preform maintenance on your system.
Quick look at my most recent Lidl purchase for the garden, a PID solar spotlight for £7.99.
When you create your own solar power, you can actually make money off the process. It is possible for you to sell your extra power to an energy company in your area. If you think you would be interested in this, get in touch with your local power company and talk to them about how it would work.