Install 6 solar panels

Darren requested 3 quotes from Solar Energy Specialists in Hampton Park

Supply and install solar panels for under $4600
1.5 kw inverter with 1.5 kw panels.
Single storey tiled roof.
with reversed meter

I want to investigate if & what cost to install a 1.5 to 3Kw solar panel
However I have a slate roof and have been told by a couple of companies that...

Fix solar panels
I have 8x190w QJ Panels and 1x Ever Solar Inverter TL1500 The solar panels...

Supply and fit solar panel package
Supply and fit solar panel package