At this point you are going to need somebody to help you.

It is important to choose the company careful, because they are going to do the design and the installation of the PV modules. Of course a good company will be able to do everything for you from step 1 to the end and you can be only the investor, but as an investor you should know all the aspects and all the risks involved in the project.

The PV arrays are very reliable – they need to meet some qualification test standards.

The projected lifetime of 20 to 30 years. Most of the manufacturers offer module warranties of twenty or more years for maintaining a certain percentage of the initial rated power output.