I'm having solar installed in the new year. 6kw system, 24 panels, costing me $A5280 (with a $A3k govt subsidy). It's more than I need right now, and feedback tariff isn't much, but it will probably pay for itself within four years, and I expect that by then storage batteries will be a lot cheaper. I expect to be pretty much independent of the grid in 5 years time.

Every electricity generation company in Australia pays a feedback tariff, albeit a small one.

I simply do not believe that a domestic solar system costs $US40,000. If it does, your friends are being exploited. The cost of panels nowadays is less than 20% of what it used to be.

This by the way should answer your earlier question about whether I practice what I preach.

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Paul D