Npower Supplier Information, Requirements & More

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About Npower

Npower is one of Britain’s leading energy companies, serving 3.6 million residential and business accounts with electricity and gas and is now part of the E.ON group.

Contact Details


Live Chat

Live Chat Link

Online General Enquiry

Online General Enquiry Link

Account Login

Login Link

Phone Numbers

General Enquiry: 0800 073 3000 & 0330 100 8100 

Small Business Sales: 0845 072 3072

Npower for Business: 0845 166 3360

Online account support: 0800 316 9331

Switch to Npower: 0808 156 0056

COT Dept: 0845 075 0430

Smart Meter queries: 0800 980 9907

Complain about your Npower boiler: 0800 197 5442

Electricity & gas complaints: 0800 316 9328

Renew your Npower energy tariff: 0800 316 9044

Energy efficiency enquiries: 0800 0 2222 0


Termination Dept e-mail:

COT Dept e-mail:

Social Media





Contract Information

Contract Registrations

Fast Registration Npower can register new electricity sites in around 2 weeks. Useful if client is currently on deemed rates.

Direct Debit vs Cash/Cheques

Direct Debit and Cash Cheque options available, there will be an annual 5% surcharge on Cash Cheque payments.

Three Rate Meters

Npower do not accept 3 rate meters or Group Billed customers (inc additions to existing groups).

Sell Ahead Days

1, 2 and 3 year terms can be sold up to 365 days ahead. 4 year term contracts can be sold 180 days ahead.

Billing & Payment

01-04 meters run on a monthly billing cycle. The customer can opt for either variable Direct Debit quarterly, fixed Direct Debit monthly, or by Cash/Cheque (subject to credit approval).

NPower will charge 5% extra on the bill if the customer wishes to pay by Cash/Cheque.

All Payment Terms are 14 days.

Terminations & Renewals


Customers have until 30 days before the contract end date to provide termination notice.

Renewal Cycle

Npower will send customers a renewal offer at least 60 days before the contract end date.

Where termination notice is not received, customers will be placed on the prices detailed in the renewal notice but can give 30 days notice to leave.

Credit Requirements


Npower conduct their own credit checks using Experian. Please see general guidance of their criteria;

Credit Score

0-35 Fail

36-100 Accept on either Direct Debit or Cash Cheque 

N.B the above is a guide only, acceptance is not guaranteed. 

Churches and Charities are not credit checked, neither are renewal contracts.

Business Acceptance

All business types are considered and assessed on their individual circumstances.

Meter Restrictions

Npower will treat two or more MPANs/MPRs for the same business as a Group or Multi-Site. This includes related meters.

The maximum that can be processed is one MPAN and one MPR per business.

Businesses that fit the above description, with more than one MPAN or MPR, cannot be priced via the matrix. Any group sites or related meters for Npower need a bespoke quote.

Npower Updates


Npower have released some additional updates relating to the Eon merger, these include some changes to Acquisitions. 
  • Npower will no longer accept Acquisitions, Renewals are still accepted.
  • No contracts under 5000kwhs
  • Npower COT Renewals can still be done
  • Accounts are beginning to be moved across to Eons account and the full merger should be done by the end of the year


NPower have informed us they will no longer be offering 3 year deals for Gas and Electricity, Renewal and Acquisition for both SME and Bespoke contracts with immediate effect.This is due to the uncertainty that many businesses face during the COVID-19 pandemic and the unknown long term impact it will have on the cost of supplying energy and credit risk