The chart shows that the combination of PV+battery+grid, taking advantage of the best grid offer, is $123 per year cheaper than the cheapest grid-only offer ($1,645 per year) and $449 lower than the median grid-only offer ($1,971). In other words, our typical 4,800 kWh household in Adelaide can beat all contemporary grid-only offers by installing a PV + battery system and selecting the best retail offer to provide their residual grid consumption and to export their PV production surplus.

Hallelujah, the future has arrived already

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