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What's an average energy bill in Wallonia ?

Average gas and electricity bills

We have created a price simulation for all energy contracts available in Wallonia, based on consumption profiles. This gives you a clear view of the expected monthly advance payment you would pay to an energy supplier for your estimated consumption. All costs (and promotional discounts) are included in the results, so your energy consumption, all taxes, network charges and other levies have all been taken into account. Which energy supplier will offer you the lowest monthly advance payment? And how is that advance amount actually calculated?

Average monthly energy fee

What is the average monthly energy bill in Wallonia ?

In october 2026, for an average household of four people, the average monthly advance payment in Wallonia is €493.96 per month for electricity, €357.56 per month for natural gas, and €853.84 per month for dual fuel packs. The cheapest electricity supplier is currently Octa+ Eco Boost Flex at €438 per month, while the cheapest natural gas tariff is offered by Octa+ Eco Boost Flex at €298 per month. The cheapest dual-fuel tariff is currently Octa+ Eco Boost Flex at €736 per month.

There is a significant difference between the cheapest and the most expensive tariffs, meaning you can save a substantial amount by comparing offers carefully and switching suppliers when possible.

  • Self-employed
  • Office
  • Shop
Summary — Self-employed — october 2026 — Wallonia
Electricity Min. Max. Avg.
Indexed price €84 €123 €110.58
Fixed price €96 €128 €115.86
Dynamic pricing €100 €113 €106.4
 
 
Gas Min. Max. Avg.
Indexed price €152 €215 €184.6
Fixed price €147 €220 €187.36
 
 
Gas & Electricity Min. Max. Avg.
Indexed price €240 €326 €291
Fixed price €243 €342 €305.92
Summary — Office — october 2026 — Wallonia
Electricity Min. Max. Avg.
Indexed price €438 €537 €490.58
Fixed price €453 €556 €510.71
Dynamic pricing €455 €475 €464.6
 
 
Gas Min. Max. Avg.
Indexed price €298 €415 €355.68
Fixed price €307 €423 €360.93
 
 
Gas & Electricity Min. Max. Avg.
Indexed price €736 €905 €838.11
Fixed price €760 €971 €878.75
Summary — Shop — october 2026 — Wallonia
Electricity Min. Max. Avg.
Indexed price €1,376 €1,659 €1,531
Fixed price €1,531 €1,719 €1,602.64
Dynamic pricing €1,409 €1,456 €1,433.8
 
 
Gas Min. Max. Avg.
Indexed price €738 €1,014 €875.84
Fixed price €832 €1,033 €894.71
 
 
Gas & Electricity Min. Max. Avg.
Indexed price €2,114 €2,546 €2,394.68
Fixed price €2,364 €2,733 €2,523.17

Calculate your own monthly advance fee online

To recalculate your own bill, we recommend using our online energy price comparison tool. The fees on this page are averages, based on consumption profiles set by the CREG, CWaPE and VREG. Your actual consumption will always depend on where you live, your type of home, solar panels, and many other factors. So if you want a simulation tailored to your specific situation, keep your annual settlement bill to hand and make a personalised energy calculation.

Evert E.Evert E. — Energy expert

  • Electricity
  • Gas
  • Gas & Electricity deal
  • Type of tariff plan:
  • Fixed
  • Indexed
  • Dynamic
Average monthly energy fee - Wallonia
No VAT included
Product name 1-2 people 3-4 people 5+ people
Octa+ Eco Boost Flex €91 €438
Ecofix Motion Online €103 €455
Ecofix Motion €105 €460
Engie Dynamic Pro €111 €468
Ecofix Flexy Online €104 €463
Octa+ Dynamic €100 €465
Mega SME Flex €103 €468
Octa+ Boost Flex €99 €465
Eneco Solar & Wind Dynamic €113 €475
Ecofix Flexy €108 €474
Eneco Solar & Wind Flex One €111 €476
Mega Online Flex €98 €443
Engie Direct Pro €110 €488
Mega Smart Flex €94 €446
Mega Cosy Flex €84 €449
Eneco Solar & Wind Flex €115 €495
TotalEnergies proEssental €111 €492
Mega Zen Fixed 3Y €99 €453
Octa+ Smart Indexed €114 €498
Mega Off-peak Flex €110 €496
Mega Smart Fixed 2 yr €96 €458
Mega SME Fixed €110 €497
TotalEnergies proComfort €117 €503
TotalEnergies proDrive €117 €503
Engie Empower Pro €118 €506
Mega Online Fixed €103 €471
Bolt Indexed Online €118 €507
Engie Flow Pro €116 €507
Bolt Indexed €122 €511
TotalEnergies proEssential Fixed €114 €506
Mega Off-peak Fixed €113 €507
Luminus MaxxFlex Pro €117 €510
Eneco Solar & Wind Fixed One €120 €515
TotalEnergies proComfort Fixed €120 €517
Engie Empower Fixed Pro €121 €519
Eneco Solar & Wind Fixed €121 €522
Luminus MaxxFix Pro €119 €521
Engie Easy Pro Indexed €119 €522
Mega Cosy Fixed €122 €524
Engie Easy Pro Fixed €121 €532
Luminus Comfy Flex Pro €122 €535
Luminus Comfy Pro €122 €535
Bolt Fixed €128 €540
Luminus Comfy Flex Pro+ €123 €537
Luminus Comfy Pro €127 €556
Average monthly energy fee - Wallonia
No VAT included
Product name 1-2 people 3-4 people 5+ people
Octa+ Eco Boost Flex €152 €298
Energie.be Indexed €171 €327
Ecofix Flexy Online €172 €332
Octa+ Boost Flex €166 €328
Mega SME Flex €174 €337
Mega Zen Fixed 3Y €159 €307
Eneco Gas Flex One €182 €345
TotalEnergies proEssental Fixed €179 €344
Ecofix Flexy €181 €346
TotalEnergies proComfort Fixed €184 €349
Mega Smart Fixed €147 €310
TotalEnergies proEssential €181 €348
Mega SME Fixed €179 €347
TotalEnergies proComfort €185 €352
Engie Direct Pro €182 €351
Mega Online Flex €171 €331
Mega Off-peak Fixed €185 €357
Mega Cosy Fixed €191 €362
Mega Smart Flex €167 €325
Mega Off-peak Flex €185 €358
Eneco Gas Flex €191 €362
Luminus MaxxFlex Pro €188 €361
Mega Cosy Flex €156 €324
Mega Online Fixed €175 €340
Engie Flow Pro €189 €363
Energie.be Fixed €192 €368
Trevion Flex Pro €192 €369
Bolt Indexed Online €196 €373
Bolt Indexed €200 €377
Eneco Gas Fixed One €200 €380
Bolt Fixed €204 €385
Luminus Comfy Flex Pro €199 €383
Engie Easy Pro €199 €383
Eneco Gas Fixed €204 €389
Luminus MaxxFix Pro €204 €392
Octa+ Smart Indexed €212 €402
Luminus Comfy Pro €209 €402
Luminus Comfy Pro+ €215 €415
Engie Easy Fixed Pro €220 €423
Average monthly energy fee - Wallonia
No VAT included
Product name 1-2 people 3-4 people 5+ people
Mega Smart Fixed €243 €768
Mega Cosy Flex €240 €772
Octa+ Eco Boost Flex €242 €736
Mega Zen Fixed 3Y €258 €760
Mega Smart Flex €261 €770
Octa+ Boost Flex €266 €794
Mega Online Flex €269 €774
Mega Online Fixed €277 €810
Mega SME Flex €277 €805
Mega SME Fixed €289 €845
TotalEnergies proEssental Vast €290 €836
Engie Direct Pro €292 €839
TotalEnergies proEssential €295 €854
Mega Off-peak Flex €296 €854
Mega Off-peak Fixed €297 €864
TotalEnergies proComfort Vast €300 €851
Engie Flow Pro €305 €870
Luminus MaxxFlex Pro €305 €870
TotalEnergies proComfort €305 €869
Eneco Solar & Wind + Gas Flex €306 €857
Mega Cosy Fixed €313 €886
Bolt Indexed Online €314 €880
Engie Easy Pro €318 €905
Bolt Indexed €322 €888
Luminus MaxxFix Pro €323 €913
Eneco Solar & Wind + Gas Fixed €325 €911
Octa+ Smart Indexed €326 €900
Luminus Comfy €331 €937
Bolt Fixed €332 €925
Engie Easy Pro Fixed €341 €955
Luminus Comfy Pro+ €342 €971

Conditions

The advance payments shown here are based on the average annual amounts, including promotional discounts, spread across each month. As a result, your actual advance payment may differ from the suggested amount, because each energy supplier uses its own method to calculate advance payments. They often prefer to play it safe and suggest a slightly higher amount. You can always have this adjusted in consultation with their customer service department. Also keep the promotional discounts in mind: it is very important to pay your bills on time and in the agreed way, because if you do not meet the promotion terms correctly, your discount may be cancelled, with all the unpleasant price consequences that may follow.

Evert E.Evert E. — Energy expert

What is a monthly advance payment?

For energy in Belgium, a monthly advance payment is the amount you pay in advance each month to your energy supplier for your expected electricity and/or natural gas consumption.

This advance payment is not a final bill, but an estimate based on factors such as:

At the end of the settlement period (usually one year), the energy supplier issues an annual settlement statement:

In Belgium, with most energy suppliers, you can increase or decrease your advance payment amount yourself via the customer area or by contacting the supplier. It is wise to keep your advance payment as closely aligned as possible with your actual consumption to avoid major surprises in the annual settlement statement.

Dynamic pricing

Dynamic tariffs do come with a disclaimer when it comes to these averages. Because the usage price under a dynamic contract changes every quarter of an hour, it is virtually impossible to make an accurate estimate of the advance payment amount. So don’t rely too heavily on the amounts shown, as they are based on the price during just one 15-minute period in an entire month. Dynamic tariffs are interesting if you manage your energy use very consciously and always pay close attention to when you use electricity and when you do not. If that does not really suit you, it is better to choose a variable or fixed tariff.

Evert E.Evert E. — Energy expert

Questions & answers

Still have questions?

Below you will find answers to the most frequently asked questions about energy. Is your question not listed? Feel free to contact us.

Advance payments really depend on your consumption, type of home, solar panels, ownership of an electric car, and much more. So an “average” household does not necessarily reflect your own situation.

That said, the VREG and the CREG have drawn up the most common consumption profiles, and for all of these profiles we have already made an estimate in our overview tables. Feel free to use them as a guide.

There are 2 times when you can expect a final bill>

Yearly

  • Each year, your meter reading is recorded by your local grid operator (whether automatically or not). Based on this, it is checked whether you have paid too much or too little in advance payments during the year. An annual statement is then drawn up.

When moving house

  • If you are moving, you need to complete a takeover document together with the new occupant. Based on this document, you as the outgoing resident will receive a final bill for the energy you personally still consumed. This can therefore also cover a period shorter than 1 year.

You pay a monthly (or sometimes quarterly) advance for your energy consumption, so the cost is spread out and you avoid having to pay a very high annual bill all at once. For energy suppliers, this also helps limit the risk of non-payment.

There are also a few prepaid energy formulas, where you pay your full annual bill in advance and only receive a final settlement once a year. However, this formula is not popular and is chosen only rarely.

If you have received your final bill and it turns out you have paid too much in advance, you can have the credit refunded. To do so, contact the customer service department of your energy supplier.

On the other hand, if you have paid too little in advance, you will have to pay the difference via your final bill, and this amount must be settled straight away.

Once you have received your final bill, you will usually also receive a new proposal for your advance payment amount, adjusted to the new situation based on your expected consumption and energy prices.

Yes, you can contact your energy supplier at any time to have your advance payment adjusted. In most cases, you can also arrange this yourself online via your supplier’s customer portal.

There are, of course, limits to how high or how low you can set your advance payment. For example, if your energy consumption is usually high, you will not be able to set an extremely low advance payment.

Each supplier has its own internal rules for this, but the general principle is that your advance payment must always be realistic and in line with your actual consumption.