In many cases, the reduction in your annual energy expense will exceed your annual solar system financing costs, creating a positive cash flow from day one. The biggest cost involved with implementing solar power generation system is the actual price of the actual power generating equipment. Once a few years has passed, that equipment will have paid for itself when you consider the resources you will have saved by switching to solar.  So the need for patience is essential.  You will always have to invest more than you may want to in the beginning, but by using homemade solar power you can help save on this investment.