Hey guys,
OK, so you're thinking to install some new brand photovoltaic in your home, or probably on your enterprise, but you don't know which one to install.
There are 3 basic types: mono, polycrystalline and thin film. Each has their own advantages and disadvantages. I advise you to read this article for more info: http://energyinformative.org/best-solar-panel-monocrystalline-polycrystalline-thin-film/
You may ask: "how many panels do I need in my own house?". That depends in so many factors, but basically, the minimum it'll be 10 panels in order to produce some saving-effects on your electricity bill.