Electricity supplier & heat pump in Luxembourg: complete guide 2026
A heat pump multiplies your annual electricity consumption by 3 to 4 — radically changing your relationship with your electricity supplier. In Luxembourg, this profile shift means reviewing your meter capacity, choosing a contract suited to your high and flexible consumption, and maximising available Klimabonus subsidies (up to €10,000 for an air-to-water heat pump, up to €12,000 for a geothermal unit) and Enoprimes grants available in 2026. This guide explains everything you need to know before installing a heat pump in the Grand Duchy.
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Find the best-sized contract for your heat pump — capacity, fixed or dynamic tariff, green electricity — from all Luxembourg electricity suppliers.
Compare electricity offers →1. Impact of a heat pump on your electricity consumption
Installing a heat pump is one of the most structurally significant energy investments for a Luxembourg household — and one of the most profound changes to your electricity consumption profile. Before any decision on your electricity contract, you need to understand the order of magnitude involved.
| Household profile | Annual electricity consumption | Estimated annual cost (indicative) |
|---|---|---|
| Standard apartment (no heat pump) | ≈ 2,500 – 4,000 kWh/year | ≈ €600 – 1,000/year |
| New well-insulated house + heat pump | ≈ 6,000 – 8,000 kWh/year | ≈ €1,500 – 2,000/year |
| Older house + heat pump (partial insulation) | ≈ 10,000 – 15,000 kWh/year | ≈ €2,500 – 3,800/year |
Source: gouvernement.lu — heat pump vs fossil customer comparison table, December 2024. Indicative figures only.
The heat pump remains competitive despite rising electricity prices. The Luxembourg government confirmed in December 2024 that, even after the 2025 tariff reform, a new house with a heat pump saves approximately €410/year compared to gas, and an older house approximately €710/year compared to gas (and €630 vs oil).
2. Meter capacity: what changes with a heat pump
An air-to-water heat pump typically consumes between 3 and 12 kW depending on its heating capacity. This may require upgrading your metering capacity if your current installation is not dimensioned for this additional load.
Standard base power. Insufficient for most heat pumps: a 6 kW single-phase pump draws around 26 A — combined with other appliances, tripping the main breaker becomes a real risk.
Standard for most Luxembourg single-family homes. Often sufficient for a 6–8 kW three-phase heat pump, provided other high-power appliances are not used simultaneously.
For homes combining a powerful heat pump, an 11 kW EV charger and other energy-intensive appliances. Your electrician will dimension the installation precisely during the survey.
Since 1 January 2025, the new network tariff structure in Luxembourg introduces a reference power (Pref) calculated on your consumption habits over the previous 12 months. Adding a heat pump mechanically increases your peak power — and potentially your fixed network charge and excess surcharges. See our guide on electricity meter capacity in Luxembourg for full details.
3. 2025 network tariff: real cost impact for heat pump owners
Base Pref (standard household) ……… 3 kW (minimum fixed charge)
Typical air-to-water heat pump (6–10 kW) .. may trigger a higher Pref category
Exceeding the Pref ………………… surcharge in €/kWh billed
Best practice: avoid simultaneous start-up of the heat pump, washing machine and EV charger.
Pref is adjusted automatically based on your previous 12 months of consumption.
Simulate your Pref and its impact on your bill at my.creos.net — free Creos tool.
The heat pump can be programmed to run during off-peak hours or outside household consumption peaks. Most modern heat pumps have time scheduling or HEMS connectivity. This is one of the most effective strategies to control your Pref and avoid excess surcharges.
4. Which electricity contract to choose with a heat pump?
| Criterion | Why it matters with a heat pump | What to check |
|---|---|---|
| Price per kWh | Consumption ×3–4: every cent counts more | Compare kWh tariffs on Switchr |
| Fixed vs variable tariff | High consumption = greater exposure to price fluctuations | Fixed for predictability; dynamic for flexibility with HEMS |
| Dynamic (spot) tariff | A programmed heat pump can run at low-price hours | Dynamic tariff available? |
| Subscribed capacity | Heat pump increases your peak power demand | Check compatibility with your meter capacity |
| Green electricity | Heat pump + renewable energy = fully low-carbon heating | Certified green offers? |
Fixed tariff
- Price per kWh guaranteed for the contract duration
- Predictable monthly bill despite high heat pump consumption
- Ideal if you have no energy management system
- Protection against winter spot price spikes
- No benefit if spot prices fall
Dynamic (spot) tariff
- Price indexed to real-time market
- Programmed heat pump = runs at cheapest hours
- Compatible with solar panels and HEMS
- Significant savings potential on high consumption
- Exposure to price peaks (cold snaps, grid stress)
- Requires a communicating smart meter
5. Heat pump vs fossil heating: real cost comparison in Luxembourg
Gas boiler (efficiency ≈ 92 %) …………. ≈ €0.10/kWh heat
Oil boiler (efficiency ≈ 88 %) …………. ≈ €0.10/kWh heat
Pellet boiler (efficiency ≈ 88 %) ………. ≈ €0.09/kWh heat
Air-to-water heat pump (SCOP ≈ 3.2) ……. ≈ €0.08/kWh heat
Electric resistance heating ……………. ≈ €0.26/kWh heat
The combination of a heat pump + photovoltaic solar panels is the most efficient configuration in Luxembourg. The panels produce electricity that directly powers the heat pump, further reducing heating costs. Both installations each benefit from the Klimabonus (up to €10,000 for the heat pump + up to €10,000 for the panels). See our guide on electricity supplier & solar panels in Luxembourg.
6. Klimabonus 2026: heat pump subsidies in Luxembourg
Key change in the 2026 regime: the minimum age condition for the existing boiler (previously 10 years) has been completely removed. Even if your gas or oil boiler is relatively recent, you can benefit from the full subsidy to switch to a heat pump. The 50 % cap on total investment cost applies in all cases.
| Heat pump type | Replacing fossil boiler | New installation (no replacement) | New construction |
|---|---|---|---|
| Air-to-water heat pump | €10,000 | €6,000 | €3,000 |
| Geothermal heat pump | €12,000 | €8,000 | €3,000 |
Source: guichet.public.lu — Klimabonus Wunnen 2026 · aides.klima-agence.lu — official simulator.
Total installation cost (air-to-water HP) … ≈ €18,000 – 22,000 (indicative)
Klimabonus State (fossil replacement) ……. – €10,000
Enoprimes (complementary grant) ………… – ≈ €1,500 (indicative)
Municipal subsidies (varies by municipality) – €0 to 3,000
Reduced VAT at 3 % on renovation works ….. ≈ – €1,500
Estimated net remaining cost: €2,000 – 8,000 depending on municipality
Indicative figures only. Use the official simulator at aides.klima-agence.lu for a personalised calculation.
Unlike the photovoltaic Klimabonus, there is no pre-financing mechanism for heat pumps (as of June 2026). You must advance the full installation cost and receive reimbursement by bank transfer within 4 to 12 weeks after validation of the complete file on MyGuichet.lu. The Klimabonus advance approval must be obtained before works begin — without exception.
7. Enoprimes and other grants cumulative with Klimabonus
| Grant | Indicative amount | Managed by | Key condition |
|---|---|---|---|
| Klimabonus Wunnen (State) | €6,000 to €12,000 depending on type and situation | Ministry of the Environment / MyGuichet.lu | Advance approval BEFORE works |
| Enoprimes | ≈ €1,500 (indicative) | Energy suppliers (Enovos/Creos) | Application BEFORE signing the order — mandatory |
| Municipal subsidies | Variable, up to +50 % of Klimabonus in Luxembourg City | Municipal administration | Depends on your municipality |
| Reduced VAT 3 % | ≈ €1,000 – 2,000 saving on renovation works | Automatic for buildings over 2 years old | Residential building over 2 years old |
Absolute rule for Enoprimes: the Enoprimes application must be filed before signing the order form with the installer, via an approved Enoprimes partner. If you sign the quote first, you permanently lose the right to this grant — no exceptions. The partner installer can handle this on your behalf.
8. Steps to install a heat pump and choose your electricity supplier
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Compare electricity offers →Frequently asked questions — electricity supplier & heat pump Luxembourg
How much electricity does a heat pump consume per year in Luxembourg?
Consumption depends on the size and insulation level of your home and the SCOP of your heat pump. As a benchmark: a well-insulated new house with a heat pump consumes around 6,000 to 8,000 kWh/year in total (heating, hot water and domestic use), versus 10,000 to 15,000 kWh for a less well-insulated older house. Your installer or the Klima-Agence can provide a personalised simulation based on your home.
What Klimabonus subsidies are available for heat pumps in 2026?
Since 1 January 2026, the Klimabonus Wunnen provides fixed flat-rate amounts: €10,000 for an air-to-water heat pump replacing a fossil boiler, and €12,000 for a geothermal unit in the same case. For a new installation without replacement: €6,000 (air-to-water) and €8,000 (geothermal). In new construction: €3,000 for both types. The 50 % cap on total investment cost applies. Enoprimes and municipal grants may be added. Use the simulator at aides.klima-agence.lu for a personalised estimate including your municipality.
Should I change electricity supplier when installing a heat pump?
You are not obliged to, but it is strongly recommended to reassess your contract. Your consumption profile changes radically with a heat pump — annual consumption may triple or quadruple. A contract adapted to this new volume can generate significant savings. If your heat pump is connected (HEMS), a dynamic tariff can let you programme heating cycles at the cheapest hours. Compare Luxembourg electricity supplier offers on Switchr.
Is the heat pump still cost-effective compared to gas and oil in Luxembourg in 2026?
Yes — despite rising electricity prices in 2025, the heat pump remains the most economical option in use. According to Luxembourg government data (December 2024), a new house with a heat pump saves approximately €410/year compared to gas, and an older house approximately €710/year. The reason is simple: a heat pump with a SCOP of 3.2 produces 3.2 kWh of heat per 1 kWh of electricity consumed — a useful heat cost of around €0.08/kWh, lower than gas (≈ €0.10/kWh) or oil.
Electricity & heating in Luxembourg
Subsidies & regulations