A solar photovoltaic system is an investment—and as with any other investment, the key to its value is in the size of its returns and how quickly they cover the initial outlay. This is why one of the first questions people have about solar PV systems is how long it takes for them to pay for their initial cost.
Before this can be answered, though, other questions have to be covered first:
- What size system are we talking about? What is its power-generating ability?
- What is the cost of the specific system involved?
- Is the system in question going to be selling back excess energy to the utility company?
So, first things first: let us talk about the size of the system.