The requirement is to accept time of use TOU variant charging and if you cannot shift enough load into 3 hours you may pay more overall for power in other times of day.

Demand shifting is good. Do not mistake this as free energy, it very much depends. Many people still don't have TOU meters and many people won't successfully move load into the window.

Fixed line costs are rising massively. Electricity should be significantly cheaper but the economics here favour incumbents and people like John Quiggin arguing for renationalisation are drowned out.