Help & Support


How do I estimate my next bill?

Our online billing service Energy Online has a handy bill calculator feature which you can use to estimate how much electricity you’ve used to date. If you have not activated Energy Online register here.

If you receive bills by post you can calculate your electricity costs by:

1. Taking your current meter reading and subtracting the previous meter reading (find this on your last bill) to find out how many units you have used.

2. Next multiply the units used by the current unit rate for your tariff (find your unit rate).

3. Add VAT at 5%.

Related questions


Understanding my electricity bill

If you're not sure of what the different items on your bill relate to, see below for a full breakdown or watch our quick video guide.

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I'm struggling to pay - what should I do?

Call our Payment & Accounts Resolution Team on 028 9068 5853 or send an email to [email protected] including your account number.

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I received a reminder letter but I've already paid.

If you’ve paid your bill in full or entered into a payment plan within the last seven days the reminder letter may have been posted prior to your payment being received or your plan being set up. If you’ve pad your bill by cheque this can take up to 14 days from the day you posted the cheque to be credited to your account.

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My bill is higher than usual

If your bill is higher than you expected there are a number of reasons why this might be.

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How to reduce electricity bill - Power NI

You can reduce your bills by changing plan, taking a look at our energy saving tips or you can use our home energy check which will provide you with a list of personalised recommendations to help you improve the energy efficiency of your home.

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What are the options for paying my bill?

The three main options for paying your bill are Quarterly and Monthly Direct Debit and payment on receipt which is known as standard billing, where you will receive a bill each quarter and payment is required within 14 days.

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When do I have to pay my bill?

The 'payment due date' is indicated on the top of the bill. This is generally 14 days after the bill is produced.

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Can I get a refund?

Yes, we can refund the credit from your most recent bill to your bank account if you pay your bill by Direct Debit. If you do not pay by Direct Debit then you can receive your refund by cheque. To request a refund please give us a call on 03457 455 455 and we will review your account.

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Where is the Giro slip?

You’ll find your Giro payment slip at the back of your bill. You can bring this to any bank, Post Office or PayPoint outlet.

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How can I tell if my bill is estimated?

If your bill is based on an estimated reading the letter ‘E’ will be shown beside the meter reading on page 2 of your bill.

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