Not to negate anything mentioned in the sibling comment, but yes. A home solar installation in Australia is about AUD$1.5 per watt for a complete system (panels

Not to negate anything mentioned in the sibling comment, but yes. A home solar installation in Australia is about AUD$1.5 per watt for a complete system (panels, inverter, cabling, installation, sign off, etc) before subsidies. For comparison with the OP system, an average 6kw system producing 8Mwh per year, with a conservative 15 year lifespan works out to AUD$0.075 per kwh. ($1AUD is currently USD$0.65)