The new system proposals that I have received all declined to give me panels to provide more than around 6.5 kW saying that is the limit that I can feed into the grid.
The SOLAR SIMULATOR on this site tells me that more panels on my roof gives more feed-in to the grid, which in turn drops my electricity bills.
Selecting 40 panels (totalling 13 kW), and mid-range dollars for both inverter and panels feeds a peak of 5.75 kW into the grid, and would bring my monthly bills to $-6 with a total system payback period of 5.4 years.
Moving the PANELS slider to the far right, 92 panels (no, I don’t have that much roof!) feeds a peak of 13 kWh into the grid, gives me a bill of $-128 and still only makes the payback period 5.6 years.
Is the SOLAR SIMULATOR wrong in saying that the grid will continue to accept more than 6.5 kW (which it does once 44 panels totalling 14.5 kW is reached, and beyond of course).
Are the prospective installers ignoring my “over-sizing“ requests to keep their quotation prices down by limiting the number of panels?
Or are they (stupidly) saying that their 6.5 kW system will be generating 6.5 kW all day and the grid will not accept any more, so there is no point in having any more panels?
Or a mixture or both? Or something else?
My head hurts!
I have the money in the bank earning nothing worthwhile in interest, when I’d be getting a larger income in the form of reduced electricity bills by spending up big on panels. This makes sense doesn’t it?
NSW South Coast