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.
Do not let a salesperson pressure you into purchasing solar panels. A solar energy system is an important investment and you should take the time to compare your different options. If a vendor feels the need to pressure you, they might not be confident about the quality of their products.
Don't assume that you have to live in the desert to use solar panels on your roof. If your roof expanse gets a minimum of five hours of direct sunlight on an average day, there is likely a solar panel installation that can generate electricity for your home or building.