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Invoice - this is what you pay for

The electricity bill isn't always easy to interpret. What are you actually paying for, and why do you receive two separate invoices? Here we clarify the terms related to the different parts of the electricity bill and help you understand what you're paying for.

A man in a green shirt is holding a phone with the Fortum app showing an electricity bill

Why do I receive two separate invoices?

Your local grid company sends you a bill for electricity transmission and other network services, and also collects the electricity tax. The billing schedules of the grid company and Fortum may differ.

If your local grid company is Caruna, you will receive a combined invoice for electricity usage and transmission. Upon request, you can also receive separate invoices.

Electricity bill

The electricity bill consists of two different parts:

The electricity bill comes from your electricity supplier, for example from us at Fortum. It covers the cost of the electricity you use, which is purchased through the Nord Pool electricity exchange. On the exchange, the price of electricity is determined by supply and demand. This means that the price can vary depending on factors such as weather, season, and energy production.

1. Eletricity price

The total amount on your bill is based on the type of electricity contract you have and how much electricity you’ve used during the given period. If you have a market-based (spot price) contract, the price follows the electricity market price, while with a fixed-price contract, the price per kilowatt-hour remains the same regardless of market fluctuations.

In addition to the costs mentioned above, a fixed monthly fee and administrative charges from the electricity supplier (often called a margin or additional fee) are usually added to the bill.

E-invoice

Change to e-invoice

Want to switch to e-invoicing? If you’re our customer, you can easily change your payment method directly in the app or by logging in to our website. You can also activate e-invoicing through your own bank. Please note that the person receiving the invoice from Fortum must also be the one to register for e-invoicing in their online bank.

Questions about the electricity bill

You receive two separate invoices, one for electricity sales and one for electricity transmission. Fortum bills you for the electricity sales, and your local grid company bills you for the transmission. If your local grid company is Caruna, you’ll receive a combined invoice for both electricity sales and transmission.

An e-invoice is a digital invoice that you receive directly into your online bank. It makes payments easier and faster, as you don’t need to enter the reference number, recipient’s account number, or the invoice amount. You can check the invoice details in your online bank and approve the payment using your banking credentials. Additionally, e-invoicing is an eco-friendly option, as there’s no need for a printed invoice!

You can order an e-invoice directly through the Fortum app or from here.


We always invoice electricity consumption afterwards. The contract is billed monthly. You will receive your first invoice in the first half of the month following the start of your contract.

The most common billing interval for electricity bills is a monthly invoice. If you want to change the billing frequency for your electricity contract, you can do so easily in Fortum’s online service or app. You can choose to receive the invoice 4, 6, or 12 times a year.

It depends entirely on your electricity consumption. Electricity usage can vary significantly, for example, between an apartment and a detached house.

The size of the bill also depends on the type of electricity contract you have and therefore the price you pay per kilowatt-hour (kWh).