E.ON

If you've moved supplier or switched energy companies, you may have left credit behind. Energy companies keep records of their past customers, but to help speed up the claim process, you’ll need to have proof of:

Your identity (such as a driving licence or passport)
Address that you’re claiming for including the postcode if possible (an old bill)

To find out more about E.ON’s claim process, you can:
  Call:
Landlines: 0345 052 0000

Write:
E.ON
PO BOX 7750
Nottingham
NG1 6WR

Or visit:
www.eonenergy.com/for-your-home/help-and-support/refunds-questions