Please find below a snap shot of 4 quotes (6.6kW system) from Perth solar suppliers. My house is a 2 storey property with Colorbond roof with 3 phase power. TIA
19 x Longi HiMo shingle 350w solar panels
1 x Fronius Symo Inverter
Tin roof frame kit – Anodized Aluminium with stainless steel fixings with 10 year warranty.
Use sub contractors for installations
TOTAL COST = $6,339.00
20 x 325W (6.6 kW) REC TwinPeak mono 2 Solar panels.
1 x 5 kW Huawei SUN2000 Solar Inverter (3-phase).
DC Coupled Battery Ready.
In-house Installation (no sub-contractors).
TOTAL COST = $5,740.00
19x 350 TW Shingled Mono Panels - black frame finish, and high efficiency rating
1x 5kW Fronius SYMO 3 Phase Inverter
Titan railing products
TOTAL COST = $5,299.00
6.615kW system using Suntech 315 watt panels
5kW Fronius 3 phase inverter
Fully anodised Titan racking system
Use sub contractors for installation
TOTAL COST = $6,290