How to pay your business energy bills by Giro
Paying by Giroslip
Not already paying by Direct Debit? You can pay your business bills at your bank or the Post Office using the Giroslip at the bottom of your bill – it’s already filled out with your name, npower account number and the amount you owe. Just fill in the remaining details and take it along with your cheque or cash payment. Please note, if you pay by giroslip, you'll incur the surcharge for non-Direct Debit payment.