The cheapest deal isn't always the best deal. A bargain tariff from a supplier with terrible customer service or a hefty exit fee can end up costing you more in the long run. That's why every standard fixed deal gets a SwitchPilot Score out of 100, so you can compare the full picture at a glance. We're working on a separate ranking for EV and time-of-use tariffs - they don't fit the same formula because your real cost depends on when you use power.
Here's what goes into it:
💰 Price (45%) - How much you'll save compared to the Ofgem price cap. The bigger the saving, the higher the score.
🏛️ Citizens Advice rating (20%) - The supplier's official star rating from Citizens Advice, covering complaints, call wait times, billing accuracy and customer commitments. Updated quarterly - currently Q4 2025 data.
📋 Ofgem complaint record (20%) - How many complaints Ofgem receives about the supplier per 100,000 customers. Fewer complaints means a better score.
🔒 Price certainty (10%) - Fixed tariffs score higher because your rate is locked in and won't change. Variable and tracker tariffs score lower because your bill can go up if the market moves.
🚪 Freedom to leave (5%) - Deals with no exit fee score highest. The bigger the exit fee, the lower the score - because you don't want to be trapped if a better deal comes along.
If we can't find public data for a supplier on one of these factors - a newer supplier without a Citizens Advice or Ofgem complaints record, say - that factor scores nothing, and we don't hand its weight to the factors we can measure. The deal's highest possible score drops by the weight of the missing factor instead, so a supplier we can only partly check sits below 100 by design. Being hard to verify costs a supplier points rather than getting waved through.
If two deals tie on score: the supplier with the fuller public record - more of the five factors actually scored, fewer gaps - is ranked higher. If that's also identical, the cheaper £/year wins. We'd rather show you the deal we could fully check first.
No supplier can pay for a higher ranking. The score is the score.