Eneco or Luminus: which electricity supplier?

Eneco or Luminus: these are two heavyweights of the Belgian market that people often struggle to tell apart. Luminus, the country's second-largest supplier and an EDF subsidiary, plays the competitive-price card; Eneco, backed by a large international group, leans on 100% green and services. Here is what really separates them, and how to choose based on your profile. For the whole market, see our ranking of the best electricity suppliers.

Eneco or Luminus: which is cheaper?

Luminus is generally the cheaper of the two. According to price grids published in mid-2026, its variable BasicFlex Online offer is estimated at around €1,294 per year for a household using 3,500 kWh, with a kWh price between €0.128 and €0.209 depending on the band. Eneco, as a supplier tied to a broad range and a 100% green positioning, generally sits a notch above on the raw price. In practice, for an average profile, Luminus often saves €100 to €200 over the year compared with an equivalent Eneco offer. Neither of them, however, is the price champion: players like Mega or Bolt often go lower, around €1,000 to €1,100/year for the same consumption.

What is the concrete price difference over a year?

The gap between the two often exceeds €150 per year on electricity alone. Take a typical Walloon household at 3,500 kWh: by choosing Luminus's cheapest online offer rather than a green Eneco offer, it usually saves €100 to €200 per year without changing its consumption at all. Beware, though: both suppliers regularly offer first-year welcome discounts, which can temporarily narrow the gap before the tariff normalises. The reflex to keep, as the CREG points out, is to compare the total annual cost on your real consumption, not just the advertised kWh price.

Eneco or Luminus: how good are their green offers?

Eneco is the more credible of the two on green. All its electricity offers are backed by renewable energy, which is why it ranks ahead of Luminus in Greenpeace's ranking of suppliers. Luminus is no slouch: it sells green offers backed by guarantees of origin (wind, solar, biomass) and remains the country's largest wind power producer, but it also keeps some offers that aren't explicitly green. In short, if renewable origin is your priority and you want to stay with a large supplier, Eneco has the edge. For truly local, cooperative green power, however, players like Ecopower or Bolt apply stricter criteria than these two.

Which offers the best service and range?

Both offer solid customer service, with a difference in emphasis. Luminus, backed by its size as the second national operator, has a strong phone service and app, and a broad range covering electricity, gas, heating maintenance and energy services. Eneco leans more on guidance, consumption-monitoring tools and its image as a sustainable supplier, with a range geared toward solar, home batteries and smart control. On the Test-Achats Energy barometer, both post decent results without topping the ranking, which is often led by Mega. If you value a well-established multi-service partner, Luminus reassures; if you value monitoring and the energy transition, Eneco speaks more to your profile.

Which supplier should you choose for your profile?

For most households that want to pay less first, Luminus wins. It's the default choice for a budget-conscious home comfortable with online management and a variable tariff. Eneco is better suited to those who want 100% green electricity without leaving a large supplier, or who invest in solar and in managing their consumption. Here's how to decide quickly based on your situation.

How do you switch from Eneco to Luminus (or the other way)?

The switch is free, with no cut-off, and handled by the new supplier. In practice, you sign up with Luminus (or Eneco) with a recent bill on hand — for your EAN code and annual consumption — and the new supplier notifies the old one and organises the changeover. The physical grid, run by your distribution system operator (Ores, Fluvius, Resa or Sibelga depending on your municipality), does not change: electricity keeps arriving without interruption. Household contracts can be cancelled at any time with one month's notice, free of charge. Before signing, always check your specific case on the official comparison tool of the CREG, VREG or CWaPE, and compare the whole market in our ranking of electricity suppliers.