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Time-of-Use Tariff Benefit Checker

Check whether an off-peak electricity tariff is likely to save you money based on how much demand you can shift.

40%

Tariff fit assessment

Annual saving potential

£0

Suitability rating

Moderate

Recommended setup

A smart meter plus programmable overnight loads usually gives the best starting point.

Compatible tariffs to investigate

    Quick interpretation

    Methodology

    How off-peak savings are estimated

    Potential savings are calculated using annual shiftable electricity demand multiplied by the difference between your current tariff and the off-peak rate. The model then adjusts your practical shiftable share based on whether you have the technologies that make time-shifting easier, such as an EV, battery, heat pump, or smart meter.

    This is a screening tool, not a full tariff optimiser. Real-world value depends on standing charges, export arrangements, the size of the off-peak window, and whether some of your electricity use becomes more expensive during peak periods.