Natural gas suppliers in Belgium

Updated on September 1, 202613 plans compared13 providers

In short

Belgian gas suppliers are the same companies that sell electricity, and most give a discount when you take both. As with electricity, only the energy component of the bill varies by supplier: distribution charges and taxes are set by your grid operator and your region, and they are identical whichever contract you sign.

Natural gas contracts surveyed on the Belgian residential market, with the energy price per kilowatt-hour and the annual standing charge.
Provider	Plan	Price	Key points	View plan
MegaPartner	Prepaid Flex	6.53 c€/kWh	Variable rate Annual standing charge €177,83 Prepaid plan	View plan
Octa+Partner	Flux	6.14 c€/kWh	Variable rate Annual standing charge €200,43 Independent Belgian supplier	View plan
DATS 24	Gaz Naturel Variable	4.64 c€/kWh	Variable rate Annual standing charge €173,93 Subsidiary of the Colruyt group	View plan
EnergyVision	Gaz bon marché 1 an fixe	5.80 c€/kWh	Fixed rate Annual standing charge €210,43 Price guaranteed for one year	View plan
Ecofix	Flexy Online	6.17 c€/kWh	Variable rate Annual standing charge €145,43 Among the lowest standing charges	View plan
Engie	Basic Variable	6.34 c€/kWh	Variable rate Annual standing charge €155,43 Belgium's largest supplier	View plan
Luminus	BasicFlex Gaz	6.48 c€/kWh	Variable rate Annual standing charge €155,43 Belgium's second-largest supplier	View plan
TotalEnergies	myEssential Variable	6.58 c€/kWh	Variable rate Annual standing charge €170,43 Discount on TotalEnergies fuel	View plan
Eneco	Gaz Naturel Flex	7.02 c€/kWh	Variable rate Annual standing charge €200,43 Belgian supplier	View plan
Bolt	Plenty Variable Online	7.24 c€/kWh	Variable rate Annual standing charge €147,31 No termination fee	View plan
Elegant	Elegant Gaz	On request	Independent Belgian supplier Monthly tariff sheet on request Fixed and variable plans	View plan
Frank Energie	Frank Gas	On request	Market purchase price with no margin on energy Fixed monthly subscription Consumption management app	View plan
Trevion	Trevion Gaz	On request	Independent Belgian supplier Offers for households and small businesses Tariff sheet on request	View plan

Prices and features surveyed on August 31, 2026. They may have changed since. Always check the offer on the provider’s website before signing up.

What actually varies between suppliers

A Belgian gas bill has three blocks. The energy component is what the supplier sells you, expressed in cents per kilowatt-hour. The distribution and transport tariffs are set by your grid operator and approved by the regulator. The levies and VAT are set by the federal state and your region.

Only the first block is negotiable. The other two are identical at your address regardless of which supplier you sign with, which is why they cannot change the ranking of contracts — they simply add the same amount to every total.

That leaves two figures to compare, and both are in the table above: the price per kilowatt-hour and the fixed annual standing charge. Multiply your yearly consumption by the first, add the second, and you have a number that ranks the contracts for your situation.

Why the standing charge matters more than it looks

The standing charge is a flat annual amount, charged whatever you consume. In our survey it ranges from roughly 145 € to 210 € a year — a spread of 65 € that no amount of shopping on the unit price can recover if you use little gas.

The arithmetic is simple. A household that heats with gas burns 15 000 to 23 000 kilowatt-hours a year: at that volume a difference of half a cent per kilowatt-hour is worth 75 to 115 €, so the unit price dominates. A flat with gas cooking only burns 600 to 1 200 kilowatt-hours: there the same half-cent is worth under six euros, and the standing charge decides everything.

Establish which of the two you are before reading the table, and you will read it correctly.

Fixed, variable and indexed contracts

A fixed contract locks the energy price for the term, usually one to three years. You pay a premium for that certainty, and you keep paying it if the market falls.

A variable contract follows a published index, revised monthly or quarterly. It has been the cheaper option over most long periods, at the cost of a bill you cannot predict twelve months out.

A dynamic contract goes further and follows the hourly market. It rewards households that can shift consumption, which almost never applies to gas: you cannot postpone heating a house the way you can postpone running a dishwasher.

Our verdict

Gas is usually the largest energy line in a Belgian household heated by gas, well ahead of electricity, so this is where comparing pays most in absolute terms. Apply the rule of the table — annual consumption × energy price + standing charge — and do the arithmetic separately from electricity: the ranking of suppliers often differs from one energy to the other.

Frequently asked questions

Which gas supplier is cheapest in Belgium?

It depends on your annual consumption. At a small volume the fixed annual standing charge dominates; with a large heating demand the price per kilowatt-hour does. Multiply your consumption in kilowatt-hours by the price of each contract, add its standing charge, and compare those totals — distribution tariffs are identical for every supplier at your address and change nothing in the ranking.

Where do I find my consumption in kilowatt-hours?

On your annual settlement invoice, not on a monthly instalment. Belgian gas meters record cubic metres, which are converted to kilowatt-hours using a calorific conversion factor specific to your grid; use the converted figure printed on the invoice rather than converting the cubic metres yourself.

Should I take gas and electricity from the same supplier?

Only if the bundle discount beats the difference between the best supplier on each energy separately. Belgian suppliers rank differently on gas and on electricity, so the cheapest gas contract and the cheapest electricity contract are frequently sold by two different companies.

Does switching gas supplier interrupt my supply?

No. The physical supply is delivered by your distribution grid operator, which does not change when you switch. The new supplier handles the transfer with the old one, and nothing is disconnected at any point in the process.