Solar panels must be cleaned regularly. If your home is in a filthy region or close to the desert, they should be hosed weekly. Regardless of air born dirt and dust, you should do a through cleaning every couple months. Clean solar panels are productive solar panels.
Keit Do reports on solar installation prices rising $1000-$1500 in wake of foreign solar panel tariff (1-23-2018)
Before installing any form of solar panels, be familiar with local rules and regulations. There are lots of places where some permits are required. The last thing you want is to have the system put it and then you are forced to remove it later.
Rebates and incentives from the government are a great way to help your solar panels more affordable. The initial cost of getting a solar power system set up can be overwhelming, but you can frequently find financial help. Do your research and you may find great programs that offer rebates, grants or other incentives to help you get the solar power equipment to get you started. They can help lower costs considerably. It may be possible to get tax deductions for your costs.