Frequently Asked Questions

Unlike comparison sites, we don’t get paid by suppliers to promote their tariffs. We check every tariff from every supplier and only show you the ones that make your energy spend go furthest.

You’ll need either a smart display linked to your smart meter or a recent energy bill (if you don’t yet have a smart meter).

Via smart meter data: Once connected to your smart meter data, WattsWatt analyses your energy data and sends you a notification when your personalised tariff results are ready.
Via energy bill: The call handler will be able to read aloud the results or send the results in an email for you to choose from.

No. We only provide tariff recommendations - the choice to switch is always yours. However, tariff results are only valid for 24 hours as suppliers start new tariffs and end older tariffs each day.

When you click through to WattsWatt you will see the latest results matched to your energy usage data.

Yes. We only use your smart meter or bill data to calculate your tariff options. Your data is encrypted, stored securely, and never sold to third parties.

Yes. You can close your account or withdraw consent at any time, and we’ll delete your data in line with our Privacy Policy.

No. We show you the best tariffs but do not switch suppliers on your behalf. You remain in full control.

The switch should be completed within five working days. Your energy supply will not be interrupted during the process. You are entitled to £30 compensation if the switch takes longer. Request this from your new supplier.

Yes. You have a 14-day cooling-off period after agreeing a new tariff, during which you can cancel without penalty (except for any energy already used).

If you’re within the last 49 days of a fixed-term contract, your supplier cannot charge exit fees. Otherwise, check your contract for details.

Exit fees are specified on your energy bill and on your tariff information.

You are protected under UK consumer law. If you are switched in error or without your consent, you can reverse the switch at no cost. Suppliers may also be required to pay compensation.

If you need advice, you can contact Citizens Advice (0808 223 1133) or Ofgem for guidance.