How long will it take before I see a return on my initial investment?

You’ll see savings on bills immediately. Payback of the installation cost depends on many variables including quality of panels and inverters, your local weather conditions, shading, pitch and orientation of your situation. Typically in Cornwall you can expect to pay off a home system in 8-12 years and a commercial system in 6-8 years. After that, it’s like getting free energy for the lifetime of the system (25-50 years with quality panels).