For the full process, see our guide on how to switch electricity supplier.
When is the best time to switch?
The best time to compare and switch is usually 3–6 months before your contract expires. That gives you time to:
- Enter your renewal window (often 30–120 days before end date) and switch without exit fees
- Get multiple quotes and negotiate or lock in a rate
- Arrange a future-dated switch so your new contract starts when the old one ends
Market volatility
Wholesale electricity prices move. Locking in a rate early can protect you from rises before your contract ends. If prices fall, some suppliers offer flexibility, but fixed contracts typically lock the rate. Comparing early lets you choose with full information.
Earliest and latest action dates
Your renewal window defines the earliest date you can switch without penalty. The latest you should leave it is before that window closes — otherwise you may roll onto out-of-contract or rollover rates. Aim to have your new deal agreed at least a few weeks before contract end so the switch completes on time.
Next step: Compare electricity suppliers and plan your switch around your contract end date.
See my earliest / latest action datesSee my earliest / latest action dates