Here's how! Solartricity.ie will help you with designing a system and give you an itemised quote based on your roof area and roof tiles etc, they'll give you all the bits down to the correct screws. They deliver or you can fit it in a big car. Then the install is (reportedly) very simple, everything plugs or clicks together, no splicing cables. Solartricity can recommend local installers also apparently, but I've no reviews of that aspect.This sounds not only understandable technically, but very doable.
They have an 'ask a question' page that's delightful reading. I have no first-hand experience of them, but based on the questions page I love and trust them. Looks like people are doing self installs, from the questions, but that's DC that you're playing with. On a roof.