Hands down, one of the best top-ups around.

Know where you stand

Fix your gas and electricity prices for greater peace of mind when you pay for your energy by prepayment.

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Pay as you go

With a prepayment meter, you pay for your energy before you use it. Putting you in complete control of your energy costs.

Easy online account management

Activate your online account to see your bills and make payments, send meter readings, track and compare your energy usage with other households like yours and more. You can also try our great new mobile app.

Online account benefits

Quicker switching

Are you new to npower? Good news. We’ve speeded up how long it takes to switch to us. On average, it now takes just 17 days. You can even track your switch with your online account.


We’ve summarised some of the important things you need to know about Pre Pay Fix October 2018 below, but please be sure to download and read through our terms and conditions:

Download Pre Pay Fix October 2018 terms and conditions (PDF, 39KB)

Download Standard terms and conditions (PDF, 103KB)

About our Pre Pay Fix October 2018 tariff

  • Prices are fixed until 31 October 2018 subject to governmental or regulatory requirements.
  • There’s no exit fee if you decide to switch tariff or supplier.
  • This tariff is available to new or existing customers with a standard prepayment meter - not for smart prepayment meters.
  • You’ll need to pay by prepayment, using the card, key or token you got from npower to update your meter. Or the wrong prices could be loaded to your meter.

Please note that if you start using more gas or electricity, then the amount you pay us will increase even though the price per unit remains the same.

Your prices may increase if you change your meter type or the way you pay, or you no longer meet our eligibility criteria for this tariff.

If there’s a change in the rate of VAT chargeable for the energy we supply, this could also increase the charges you pay.

£1,097 average annual cost, including VAT at the reduced rate of 5%, and based on:

  • a customer with standard single rate Prepayment meters
  • typical annual average consumption of 3,100kWh electricity and 12,500kWh gas
  • payment by prepayment
  • costs averaged across mainland UK

Your actual annual cost will vary depending on:

  • whether you get both your electricity and gas from us, or just a single fuel
  • your region
  • your consumption

Annual charges may be higher than our standard charges.

Once you’re on this tariff, your new Pre Pay Fix October 2018 prices won’t show on your meter until the next time you top up using the right card, key or token. We’ll work out any difference between what you pay and how much you should have paid in your later statements - you may then be due a refund or have an extra amount to pay. The same will happen if at the end of this tariff, or if you change tariff or supplier – your new prices won’t show until you next top up.

Correct as at 07.04.16.

After 31 October 2018, you’ll automatically move to our cheapest Standard variable tariff applicable to you.

Standing charges
We split the amount you pay us into two parts - the amount you pay for the energy you actually use, and also a standing charge for the cost of delivering and supplying energy to your home. You’ll pay a standing charge no matter how much you use. Standing charges vary depending on your tariff, and are different for gas compared to what they are for electricity.

Changing your tariff or supplier: There’s no exit fee if you decide to switch tariff or supplier.

Offer subject to availability and may be withdrawn, suspended or amended at any time.