Switching electricity or gas supplier in Belgium
A residential customer in Belgium can change energy supplier at any time with one month's notice and without paying any termination penalty, even on a fixed-term contract. The switch is purely administrative: your meter, your connection and your distribution network operator stay the same, and supply is never interrupted. The incoming supplier handles the cancellation.
Steps
Take your annual consumption from a settlement invoice
Find your yearly consumption in kilowatt-hours on your last settlement invoice, for electricity and for gas separately. Without that figure any comparison is guesswork. Note your EAN code at the same time, since it identifies the supply point.
Compare with an official regulator tool
Use the federal CREG comparison tool or your regional regulator's: CWaPE in Wallonia, VREG in Flanders, BRUGEL in Brussels. These calculate the real annual amount for your consumption and your commune, including network tariffs and levies.
Sign with the new supplier and let it cancel
The incoming supplier terminates the old contract for you. Give your EAN code and your exact address so the right supply point is identified. Do not cancel in parallel: two cancellations on one connection create a supply gap.
Photograph your meter on the switching date
On the day the switch takes effect, read the meters and photograph them with the meter serial number visible in the frame. This is your only evidence if the closing invoice is contested. Send the readings to both suppliers.
Check the closing invoice against your photograph
The outgoing supplier issues a final invoice stopped at the switching date. Verify that the index matches your reading and that no period after that date is billed. Dispute any discrepancy in writing, attaching the photograph.
What does not change when you switch
Your meter stays where it is. No technician comes, nothing is replaced and there is no appointment to schedule.
Your distribution network operator stays the same, because it is determined by your commune and not by your contract. It remains the party that intervenes in the event of a fault, whoever bills you for the energy.
The network tariffs and levies are unchanged. They make up a substantial share of the bill and are not negotiable. Only the energy component moves when you change supplier, which is also why the achievable saving has a ceiling.
There is no cut-off at any point. This is the most widespread fear among newcomers and it is unfounded: the physical network does not know or care which supplier bills you.
The one-month notice rule
The Belgian residential market gives the consumer a protection that is unusual in Europe: you may end an energy contract with one month's notice, without indemnity, including a contract signed for a fixed term of one, two or three years.
That asymmetry is the point. A three-year fixed-price contract binds the supplier to hold its price for three years; it does not bind you to stay. Reading a fixed term as a lock-in is a mistake newcomers make constantly.
The practical consequence is that there is never a reason to stay on an unfavourable contract out of inertia. Re-run the comparison at each annual settlement, or immediately when a settlement invoice surprises you.
Cases where the procedure differs
Moving house is not a supplier switch. It is a change of supply point, which means closing the contract at the old address and opening one at the new address, using the energy transfer document to fix the meter readings at handover.
Arrears do not disappear with a switch. The debt stays owed to the previous supplier, and some suppliers refuse a new subscription from a customer with recent unpaid invoices. Settle the position before starting the procedure.
If you have solar panels or a heat pump, compare on the full profile rather than on headline price. Injection arrangements and capacity-based network tariffs differ by region and can outweigh a difference in the energy rate.
Frequently asked questions
Does switching supplier cost anything?
No. The switch is free for a Belgian residential customer, with no termination indemnity even during a fixed-term contract, subject to the one month's notice. The distribution network operator charges nothing for it either.
Will my electricity be cut off during the transition?
Never. The change is administrative only. Your physical connection, your meter and your network operator are unchanged, so supply continues without interruption and without any technical intervention at your home.
Do I have to cancel my old contract myself?
No, and you should not. The incoming supplier performs the cancellation as part of the switching procedure. Cancelling separately at the same time risks a double termination and a period with no contract on the connection.
Can I switch if I have unpaid bills?
The debt remains owed to the previous supplier and follows you. Some suppliers refuse new customers with recent arrears, so regularise your position first. Switching is not a way of escaping an outstanding energy invoice.