Changes in invoicing starting from 1.9.2025
As of March 1st, 2025 KSS Energia's electricity sales business for both consumer and business customers was transferred to Oomi through a business transaction between KSS Energia and Oomi. During the transition period, customers' electricity contracts and invoicing has been handled by KSS Energia. This transition period is now coming to an end, which means that invoicing will change starting from September 1st, 2025.
From September 1st, 2025 electricity sales invoicing will be transferred to Oomi. This means certain changes to the invoicing process. Read more about the upcoming changes on this page.
What will change?
The changes will affect, among other things, the appearance of invoices and the payee. Those living in KSS Verkko Area will start receiving two invoices, one for electricity sales and one for distribution. Some of the changes will take effect at different times depending on the type of electricity sales contract you have.
Changes for all customers
Starting September 1st, 2025 Oomi will invoice electricity sales for all customers who transferred from KSS Energia to Oomi. At the same time, Oomi will become the payee, and the payees's account number will also change. You will receive invoices from Oomi with a new layout. Take a look here to see how your upcoming invoices will look like!
Do you live in the KSS Verkko Area?
If you have a non-fixed contract (for example KSS Tunti or KSS Vartti)
- Joint invoicing for electricity sales and distribution ended on August 31st, 2025. So you have already received the final invoice with both electricity sales and distribution.
- From now on you will receive separate invoices for electricity sales from Oomi and electricity distribution from KSS Verkko. The first separate invoices will be sent in October.
If you have a fixed-term contract (for example KSS Kampanja or KSS Valinta)
- For existing fixed-term contracts, joint invoicing will continue for the time being, but no longer than the duration of your contract.
- Once joint invoicing ends, you will begin receiving separate invoices for electricity sales and electricity distribution. Oomi will invoice for electricity sales, and KSS Verkko will invoice for electricity distribution, each with their own invoices.
What will stay the same?
Your electricity sales contract, its price and terms will remain unchanged. Your billing cycle will also stay the same as before. We send invoices at the beginning of the month, so the due date is around the middle of the month. The familiar 14-day payment period will also remain.
Good to know about upcoming electricity sales invoicing
Your invoicing method will generally remain the same. However, depending on your invoicing method and your bank, some changes may require action from you, which is good to keep in mind. Check below information about your invoicing method and possible actions.
Paper Invoicing
If you have been receiving your invoices in paper form, you will continue to receive them by post.
Please note, that if you use the digital mail service of Kivra, will Oomi send your electric invoices in Kivra instead of by post. Kivra will notify you of a new invoice according to the notification settings you have chosen.
The OmaPosti service, however, is not in use at Oomi.
Email Invoicing
If you have been receiving your invoices by email, you will continue to receive them directly to your email inbox. Oomi's email invoices will be sent from the address no-reply(at)oomi.fi and the sender is Oomi Oy.
E-Invoicing
There are some bank-specific differences in how e-invoice authorizations are transferred.
- If you are a customer of Osuuspankki and have been using e-invoicing, you will continue to receive you invoices as e-invoices. No action is required from you.
- For customers of other banks, e-invoice will not transfer automatically. If you have been using e-invoicing, we will send you an e-invoice proposal to your online bank. Please check your bank account! If you do not approve the e-invoice proposal, your electricity invoices will be sent as paper invoices in the future.
Direct Payment
There are bank-specific differences in how direct payment authorizations are transferred.
- For customers of Osuuspankki and Nordea, direct payment authorizations will continue automatically. No action is required from you.
- For customers of other banks, direct payment will end on August 31st, when invoicing is transferred to Oomi.
If you wish to continue using direct payment, you will need to set up a new authorization for Oomi in your bank.
Please note, that the payment reminder is provided in the same way as the original invoice, i.e. directly to your online banking service, Kivra or your e-mail address. Before the payment reminder we will remind you of the overdue invoice with a text message a week after the due date. More information you will find here.
What is Oomi?
Oomi makes purchasing electricity easy and simple! We are an electric company that values straightforward and useful services as well as humane customer service. Oomi has more than 500,000 customers, it's great that you are now one of them!
By bringing the best people together, we can develop and provide the whole nation with more beneficial energy services. We make purchasing electricity easy and simple.
In the year 2020 we, the founders of Oomi Energia - Vantaan Energia, Oulun Energia, Lahti Energia, Pori Energia, Oulun Seudun Sähkö, Tornion Energia and Haukiputaan sähköosuuskunta - decided to join forces and develop something new that will help us facilitate the everyday lives of our customers.
We are a national operator with strong local roots.
