Personalised results in real time · Data updated 10 September 2026
In short — In September 2026 in Luxembourg, two suppliers offer gas to households: Enovos and SUDénergie. On the total bill, the cheapest offer in our comparison is now SUDénergie SUDgaz Classic (€78.86/month for 1,000 m³/year, i.e. €946/year); SUDgaz Green 50 (€84.26/month) even delivers 50% biogas for the price of a conventional plan. On the energy component — the only item suppliers actually compete on — Enovos is the cheapest gas supplier in Luxembourg: 3.99 c€/kWh, against 4.45 c€/kWh at SUDénergie — €50.80 less energy per year for 1,000 m³ (€438.70 against €489.50 excl. VAT). Its fix naturgas plan (€84.32/month) is also the only one with a price locked for 2 years, 100% climate-neutral gas and the connect discount.
In September 2026, gas bills in Luxembourg range from €78.86/month (SUDénergie SUDgaz Classic) to €89.66/month (SUDénergie Green 100), for a reference consumption of 1,000 m³/year. The lowest energy rate in the comparison is still Enovos fix naturgas (3.99 c€/kWh) — but the final bill also depends on the monthly premium, the discounts and the network component each supplier's simulator applies. The Luxembourg gas market is a duopoly: only Enovos and SUDénergie are active, both on the Creos distribution network.
The price of gas in Luxembourg has three components: the energy price (varies by supplier and contract), the Creos distribution network charges (fixed, identical for everyone) and taxes. Network charges and taxes account for 36 to 49% of the final bill depending on the supplier — €456.23 out of €936.92 excl. VAT at Enovos fix naturgas, €318.34 out of €876.24 at SUDgaz Classic (1,000 m³/year), the difference coming from the network consumption component each simulator applies.
Enovos has the lowest energy rate on the Luxembourg market at 3.99 c€/kWh (fix naturgas plan), ahead of SUDénergie SUDgaz Classic at 4.45 c€/kWh. This is the only part of the bill suppliers actually compete on: network charges, the CO₂ tax and VAT are regulated.
| Supplier — plan | Energy rate | Gap vs cheapest |
|---|---|---|
| Enovos — fix naturgas | 3.99 c€/kWh ✅ | — |
| SUDénergie — SUDgaz Classic | 4.45 c€/kWh | +0.46 c€/kWh (+11.5%) |
| Enovos — naturgas home | 4.50 c€/kWh | +0.51 c€/kWh (+12.8%) |
| SUDénergie — SUDgaz Green 50 | 4.99 c€/kWh | +1.00 c€/kWh (+25.1%) |
| SUDénergie — SUDgaz Green 100 | 5.54 c€/kWh | +1.55 c€/kWh (+38.8%) |
On 1,000 m³/year (≈ 11,000 kWh), energy costs €438.70 excl. VAT at Enovos against €489.50 at SUDgaz Classic — €50.80 less a year. The total bill then depends on the monthly premium, the discounts and the network component each supplier applies (see the head-to-head in chapter 2).
| Home size | Estimated annual consumption | Average monthly cost* |
|---|---|---|
| 60 m² | ~765 m³/year | ~€64–72/month |
| 100 m² | ~1,300 m³/year | ~€98–112/month |
| 150 m² | ~1,900 m³/year | ~€136–158/month |
| 300 m² | ~3,800 m³/year | ~€256–303/month |
*2026 estimates based on the rates shown here. Actual consumption depends heavily on insulation and heating habits.
| Offer | Average monthly cost* | Type |
|---|---|---|
| SUDénergie — Classic | €78.86/month | Conventional gas · lowest bill in the comparison |
| SUDénergie — Green 50 | €84.26/month | 50% Luxembourg biogas |
| Enovos — FIX naturgas | €84.32/month | Fixed price 2 years, 100% carbon-neutral · lowest energy rate (3.99 c€/kWh) |
| Enovos — naturgas home | €89.39/month | Market price, 100% carbon-neutral |
| SUDénergie — Green 100 | €89.66/month | 100% Luxembourg biogas |
*For 1,000 m³/year. Sources: Switchr.lu, supplier data, September 2026.
→ For a detailed breakdown of the gas price structure, see our complete guide to gas prices in Luxembourg.
In September 2026, two natural gas suppliers are active in Luxembourg for residential customers: Enovos (market leader) and SUDénergie (formerly SUDgaz). On the total bill, SUDénergie SUDgaz Classic is the cheapest gas offer in September 2026: €78.86/month for 1,000 m³/year (€946/year), i.e. €65/year less than Enovos fix naturgas — not because of the energy price (4.45 c€/kWh versus 3.99 at Enovos), but because of the network component its simulator applies. Enovos fix naturgas (€84.32/month) remains the supplier with the lowest energy price on the Luxembourg market — 3.99 c€/kWh against 4.45 c€/kWh, a price locked for 2 years, 100% climate-neutral gas, the €30/year connect discount and the dual gas + electricity pack. The market is a duopoly — no other residential suppliers exist. If your priority is local biogas, SUDgaz Green 50 (€84.26/month, 50% biogas) is now the most affordable green option on the market.
Luxembourg's largest energy supplier with over 250,000 customers, Enovos remains a relevant option for many households in September 2026: it offers the lowest energy rate in the comparison (3.99 c€/kWh), a price fixed for 2 years that protects against volatility, a dual gas + electricity pack on a single bill, 100% climate-neutral gas and a €30/year connect discount for online management. On the total bill, however, it has lost first place to SUDgaz Classic in this survey (see the head-to-head below). Its two active gas offers:
→ Read our full Enovos review | All Enovos offers
Formerly known as SUDGaz, SUDénergie is the only alternative residential gas supplier in Luxembourg. Its standout feature: a progressive biogas range.
How to choose (September 2026): for the lowest bill, SUDgaz Classic (€78.86/month); to go green without paying more than a conventional plan, SUDgaz Green 50 (€84.26/month, 50% biogas); to lock the energy price for 2 years with climate-neutral gas and a single gas + electricity bill, Enovos fix naturgas (€84.32/month); for maximum commitment, SUDgaz Green 100 (€89.66/month, 100% biogas).
The Luxembourg residential gas market is a duopoly: it all comes down to these two suppliers. Here is the comparison on their entry-level offer in September 2026.
| Criterion | Enovos — FIX naturgas | SUDénergie — Classic |
|---|---|---|
| Energy price | 3.99 c€/kWh ✅ | 4.45 c€/kWh |
| Monthly bill (1,000 m³/year) | €84.32/month | €78.86/month ✅ |
| Annual bill (1,000 m³/year) | €1,011.88 | €946.34 ✅ |
| Monthly premium | €6.00/month | €8.20/month |
| Price type | Fixed, guaranteed 2 years ✅ | Market price |
| Carbon footprint | 100% climate-neutral ✅ | Conventional (Green options extra) |
| Local biogas | nova option (bio) | Green 50 / Green 100 ✅ |
| Discounts | connect discount −€30/year | SEPA + e-invoice + mySUDenergie portal −€30/year |
In summary: SUDénergie SUDgaz Classic wins on the bill (−€65.54/year for 1,000 m³/year), and SUDgaz Green 50 even delivers 50% biogas for €0.74/year less than Enovos fix naturgas. Enovos keeps the edge on the energy price — the lowest on the Luxembourg market, 3.99 c€/kWh against 4.45, the 2-year fixed-price guarantee — SUDénergie bills at market price —, climate-neutral gas and the single gas + electricity bill.
Why the gap when Enovos sells the kWh for less? At the same address and consumption (8080 Bertrange, 1,000 m³/year, 20 kW), both simulators apply the same network access charge (€104.28/year), the same CO₂ tax (€100.23) and the same consumption tax (€11.87). The difference lies in the network consumption component: €101.96/year in SUDénergie's simulator versus €239.85/year at Enovos — a €137.89 gap that more than offsets the higher energy cost (+€50.80) and capacity premium (+€26.40). So always check the quote for your own address: the network item depends on the connection category the operator applies.
In Luxembourg, residential gas contracts exist in four main forms: fixed-price contracts (price guaranteed for 1–3 years), market-price contracts (price varies monthly or quarterly), regulated-rate contracts (indexed to the ILR reference price), and green gas / biogas contracts (environmental commitment). A fifth type, the dual gas + electricity contract, allows bundling with Enovos.
The kWh gas price is locked for a set period, typically 2 years. Stable and predictable monthly bill. Recommended in periods of high market volatility. Example: Enovos FIX naturgas.
The kWh price changes regularly following European wholesale gas market prices. Recommended for households that follow energy markets and accept price variability. Example: Enovos naturgas home.
Price indexed to the reference price set by the Institut Luxembourgeois de Régulation (ILR). The supplier guarantees a tariff below this reference price. A good compromise between transparency and stability.
The supplier injects an equivalent volume of biomethane into the network. Reduced environmental impact, support for local biogas production. Examples: SUDénergie Green 50/100, Enovos nova option.
Enovos offers to bundle gas and electricity in a single contract. Simplified administration, one bill, possible cross-discounts. Caution: check that the dual contract is genuinely competitive on both components.
→ Full guide to gas prices in Luxembourg
→ Heating cost comparison: gas, heat pump, pellets
In 2026, two suppliers offer biogas in Luxembourg: SUDénergie with its Green 50 (50% biogas) and Green 100 (100% biogas) plans, and Enovos with the nova option (bio natural gas of Luxembourg and European origin). Biogas is produced locally from organic waste — notably at the Rodange production facility — and is a renewable alternative to fossil natural gas.
Biogas differs from fossil natural gas on several counts:
Origin: biogas is produced by anaerobic digestion of organic materials. Unlike natural gas extracted from underground, biogas is a short local cycle.
Carbon impact: biogas is considered climate-neutral: the CO₂ released during combustion was previously absorbed by the organic matter from which it comes.
Local availability: Luxembourg is actively developing its biogas production, with the Rodange facility being one of the most significant production sites. Choosing a local biogas contract directly funds this sector.
Identical quality: biogas injected into the network has exactly the same properties as conventional natural gas. No boiler or installation modification is required.
Moderate extra cost: in September 2026, switching from conventional gas (SUDénergie Classic at €78.86/month) to 100% biogas (SUDénergie Green 100 at €89.66/month) costs €10.80/month more — €130/year — a modest premium for a meaningful environmental commitment. And the halfway step is now virtually free: SUDgaz Green 50 (€84.26/month, 50% biogas) costs €5.40/month more than Classic, yet stays €0.74/year cheaper than Enovos fix naturgas, the conventional plan with the lowest energy rate in the comparison.
→ Heating cost comparison by energy type
→ Wood pellet heating in Luxembourg: alternative to gas
In 2026, four levers can reduce your gas bill in Luxembourg: (1) optimise thermostat settings (19°C in living areas, 7% savings per degree less), (2) switch supplier (up to €130/year saved), (3) reduce hot water consumption, (4) renovate and insulate your home to cut heating needs by 30–70%.
Each degree Celsius less represents approximately 7% savings on the heating bill. Official Luxembourg recommendations: 19°C in living areas, 16°C in bedrooms. Lowering by 3–4°C at night or during extended absences generates significant additional savings. A programmable thermostat automates this.
Annual boiler servicing: regular servicing (mandatory every 2 years in Luxembourg, recommended yearly) optimises efficiency by 10–15% and extends the equipment's lifespan.
For 1,000 m³/year, the gap between the cheapest offer (SUDgaz Classic, €78.86/month) and the most expensive (SUDgaz Green 100, €89.66/month) is €130 a year. For a household using 2,000 m³/year, the gap between the cheapest (€142.18/month) and the most expensive (naturgas home, €165.61/month) climbs to €281/year; for a 150 m² house (≈ 1,900 m³/year), expect around €265/year.
Set your water heater between 55°C and 60°C. Install flow restrictors on taps and shower heads. Prefer showers to baths: savings of 20–30% on hot water.
Full thermal insulation combined with double or triple glazing can reduce your heating bill by 30–50%. Adding heat pump replacement can achieve 50–70% savings. Luxembourg subsidies cover a significant portion. Simulate your project at Renov.lu.
→ All tips to reduce your gas bill in Luxembourg
→ Energy grants and subsidies in Luxembourg
→ Heating cost comparison in Luxembourg
In 2026 in Luxembourg, a heat pump is 4 to 5 times more energy-efficient than a gas boiler. Combined with full thermal insulation, it reduces energy consumption by 50–70%. Significant Luxembourg government subsidies exist to fund this switch. Long-term, the heat pump is more economical despite a 3–4× higher installation cost.
Switching from a gas boiler to a heat pump is today the most profitable energy transition for Luxembourg homeowners. The reasons:
Conditions for the heat pump to be profitable: adequate home insulation, suitable heat emitters (underfloor heating or low-temperature radiators), and access to a competitive electricity tariff.
→ Complete guide: gas boiler vs heat pump in Luxembourg
→ Best electricity plan for heat pump owners
→ Energy renovation subsidies in Luxembourg
→ Renovation loan in Luxembourg
Switching gas supplier in Luxembourg is free, simple and causes no gas interruption. The distribution network remains managed by Creos. You need to provide your PCE number, a recent meter reading and your bank details. The new supplier handles the old contract cancellation. The switch is effective within 2 to 3 weeks.
How often should you compare? There is no legal limit on how many times you can switch supplier. Switchr recommends comparing offers at least once a year, and above all whenever your fixed-price contract comes up for renewal.
→ Complete guide to switching gas supplier in Luxembourg
→ Smart meter in Luxembourg
When moving house in Luxembourg, notify your current gas supplier at least 15 days in advance, read the meter on departure day, and subscribe to a new contract before moving in. Moving is the ideal opportunity to compare offers and switch if a better deal exists.
Notify your current supplier at least 15 days before departure. Read the meter index on departure day — ideally during the move-out inventory. Check for any early-termination fees if you are on a fixed-price contract.
You can keep your current supplier or switch — moving is the ideal opportunity. Compare the current offers via the comparison tool at the top of this page before subscribing. Provide the expected move-in date, full address, and PCE number of the new property if available.
Plan ahead: restoring a gas connection in a new home can take several days. Contact the supplier as soon as your moving date is confirmed.
→ Complete guide to moving house and energy contracts in Luxembourg
New to Luxembourg? The Switchr Expat Service helps you find all the right contracts (energy, telecom, banking, insurance) in minutes.
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All-inclusive monthly prices (energy + Creos network + taxes) · ranked by lowest price for 2 persons · Source: Switchr.lu, supplier data, September 2026
| Supplier | Offer | Type | c€/kWh | 1 person11,000 kWh/yr | 2 persons13,200 kWh/yr | 3 persons16,500 kWh/yr | 4 persons22,000 kWh/yr | 100% green | Fixed price |
|---|---|---|---|---|---|---|---|---|---|
| Natural gas — ranked by lowest price (2 persons) | |||||||||
| SUDénergie | SUDgaz Classic | Market price | 4.45 | €78.86 | €91.53 | €110.52 | €142.18 | — | — |
| Enovos | fix naturgas | Fixed price 2 yrs | 3.99 | €84.32 | €98.56 | €119.90 | €155.48 | — | ✓ |
| Enovos | naturgas HOME | Variable | 4.50 | €89.39 | €104.63 | €127.50 | €165.61 | — | — |
| Biogas offers — local renewable energy | |||||||||
| SUDénergie | SUDgaz Green 50 | 50% LU biogas | 4.99 | €84.26 | €98.01 | €118.62 | €152.98 | ✓ | — |
| SUDénergie | SUDgaz Green 100 | 100% LU biogas | 5.54 | €89.66 | €104.49 | €126.72 | €163.78 | ✓ | — |
How to read this table: all-inclusive monthly prices including energy, Creos network charges and taxes (CO₂ tax included). Reference consumptions: 11,000 kWh/yr ≈ 1,000 m³ (1 person), 13,200 kWh/yr ≈ 1,200 m³ (2 persons), 16,500 kWh/yr ≈ 1,500 m³ (3 persons), 22,000 kWh/yr ≈ 2,000 m³ (4 persons). Every figure comes from the supplier's own official simulator for the same address (8080 Bertrange, 20 kW); the network consumption component they apply nevertheless differs (€101.96/yr at SUDénergie versus €239.85/yr at Enovos for 1,000 m³), which explains most of the gap despite Enovos's lower kWh price. Always check the quote for your own address. In the comparison tool at the top of the page, the most competitive Enovos plan is featured under the “Reference supplier” badge (a Switchr editorial choice — Enovos has the lowest energy price on the market); the “best price” crown always stays on the genuinely cheapest offer for the selected consumption tier. Sources: suppliers, ILR, Switchr.lu — verified September 2026.
