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Switch Energy Supplier: Step-by-Step

A complete walkthrough of switching suppliers in the UK, from comparison to completion. Save £200–£400 per year.

8 min readSave £200–£400/yrUpdated March 2024

Why Switch Suppliers?

Energy suppliers rely on customer inertia. Those who switch regularly save an average of £200–£400 per year compared to those who stay on default tariffs.

Before You Start

Gather this information to get accurate quotes:

  • Your current supplier and tariff name
  • Recent energy bill (for usage figures)
  • Meter type (standard, Economy 7, smart meter)
  • Postcode

Step 1: Compare Tariffs

Use a comparison site to see available deals. Look at the total annual cost, not just the unit rate — standing charges vary significantly between suppliers.

Step 2: Check Exit Fees

If you're on a fixed tariff, check for exit fees. Most are £30–£50 per fuel. Calculate whether your savings outweigh the fee.

Step 3: Choose Your New Tariff

Consider:

  • Fixed vs variable: Fixed protects against price rises
  • Contract length: 12 or 24 months typical
  • Green energy: Some tariffs include renewable guarantees
  • Customer service: Check reviews and ratings

Step 4: Sign Up

Complete the switch online or by phone. You'll need your bank details for Direct Debit and permission to access your energy data.

Step 5: Wait for the Switch

Switches now complete within 5 working days. Your new supplier handles everything — there's no interruption to your supply.

Step 6: Submit Final Readings

On switch day, submit meter readings to both your old and new supplier. This ensures you're billed correctly for the changeover.

After the Switch

Set a reminder to check rates again in 11 months. Loyalty doesn't pay in energy — the best deals go to new customers.

Ready to start saving?

Compare energy deals now and see how much you could save on your bills.

Compare Energy Deals

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