I’m on the Central Coast of NSW in Point Clare. I have a 2-storey house with a 45,000l swimming pool, a split system aircon unit downstairs, and a 4-zone ducted aircon system upstairs. My roof can accomodate only 21 solar panels, 14 facing East and 7 facing West. There should be no shade problems.
My last 4 electricity bills (Red Energy) plus average daily usage were $580 (21.2kWh), $475 (17kWh), $210 (5.7kWh) and $928 (35.2kWh) (including a pay-on-time discount). I cannot explain the low usage in that 3rd quarter.
Here’s a view of my roof:
I have received 2 quotes as follows:
7kW system - Superior Solar: 20 LG Neon2 panels @ 350W each, SMA 6 solar inverter, $10,390 (plus $550 for optional consumption meter)
6.72kW system - TCC Solar: 21 Canadian Solar panels @ 320W each, Fronius Primo 6kW inverter, $6,110 (includes Fronius Energy Management unit)
The solar panels in Quote 1 are a newer, and more powerful, model than those in Quote 2. Quote 2 is much cheaper, but looks to be a quality product (as does Quote 1).
Is the Fronius Energy Management unit in Quote 2 equivalent to the optional consumption meter in Quote 1? Is the 0.28kWh difference between the 2 systems significant?
My feeling is that Quote 2 offers better value.