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Solar hot water usually costs $3,000 to $7,000 installed before incentives, with federal STCs and some state rebates trimming the bill. Here is how the numbers stack up against a heat pump, and when each one makes sense.
The reliable ways to cut an Australian power bill, in order of impact: a sharper retail plan, shifting heavy use off peak, better efficiency, then solar and a battery. Small habits help, but the structural moves shift the bill most.
Heat pump hot water systems use roughly a third of the energy of conventional electric storage. Here is what they cost in Australia, how STCs and state rebates cut the price, and how to weigh running cost against the sticker.