Sorry I can’t help with acontact, the one I used dissapeared but I’d think the job was fine., there was plenty of crap ones at there . I’m a builder and we have worked on one house in particular with a dodgy install. Of course that company had dissapeared too. Everything was live the frame, the sarking, the fascia and gutter. That’s how we noticed it a contractor got a jolt.
So I can’t help you with a contact.
I have a 5kw system and it has worked out for me. Even when power went up recently so did the rebate.
I produce roughly the same amount that I use so the only reason I have a bill is because the power you buy is around 4 times what you put in the grid.
In my case I have a pool so I have the Pool system working during the middle of the day so I am using a lot of the power I produce.
I think it’s important to have an idea of when you use the most power and what on to assess if it’s worthwhile. My pool uses around 3.5kw/hr if the 3 pumps are running. So it is a good offset.
Also if it’s warming up and I’m home I put the AC on early preferably when the Pool isn’t on. It uses about 8.0kw I think.
Jason