Existing customers
Electricity helpline: 0845 166 3360
Gas helpline: 0845 166 3320
New customers
Small business sales: 0845 071 0613
Got a larger business?
Electricity helpline: 0845 070 9494
To view the npower complaints process, please click here
Telephone calls
We may monitor and/or record calls for security, quality or training purposes. Calls from BT landlines to numbers beginning with 0800 or 0845 may be free. The price of calls may vary with other operators and calls from mobiles may be considerably higher. Please check with your operator for exact charges.