Bolt or Mega: which electricity supplier should you choose?

Bolt or Mega: it's the rising challenger duel when a Belgian household wants both a low price and cleaner electricity. On one side, Mega, the Liège supplier that tops the comparison tables on price; on the other, Bolt, the digital, locally sourced green-electricity provider with the best online reputation. Both play on the same turf — lean, no branches, fully online — but don't target quite the same customer. Here is what really separates them, and how to decide based on your profile. For the full market picture, see our ranking of the best electricity suppliers.

Bolt or Mega: which is cheaper?

On raw price, Mega almost always comes out ahead. In the tariff tables I check every month, Mega ranks among the cheapest suppliers on a variable contract for an average Belgian household: in mid-2026, that's around €2,265 a year on a dual offer (electricity + gas) for a 3,500 kWh electricity profile. Bolt isn't far behind, often just €50 to €55 apart over the year — a real gap, but a modest one. In other words, if your only criterion is the bottom line, Mega keeps a slight edge; but the gap is small enough that other factors can tip the choice.

What is the concrete price difference over a year?

In practice, the gap between Bolt and Mega is measured in tens of euros, not hundreds. For an average household using 3,500 kWh of electricity a year, choosing Mega over Bolt generally saves around fifty euros over the year, at identical consumption. That's far less than the gap against an incumbent like Engie or Luminus, where you quickly exceed €150 a year. One caveat: variable prices move every month, and the price ranking can flip from one quarter to the next between two suppliers this close. The good habit is still to check your exact case on the official CREG, VREG (V-Test) or CWaPE comparator before signing.

Is Bolt's electricity really greener than Mega's?

Yes, and it's Bolt's real point of differentiation. Bolt sells 100% green electricity produced locally by identified Belgian producers — you can even choose your producer (wind, solar, hydro) from its partner network, and prosumers with solar panels pay no extra fees. Mega does offer green deals, but largely based on guarantees of origin: a mechanism that greens electricity on paper without guaranteeing Belgian generation. If ecological impact matters as much as price to you, Bolt is the more credible of the two. Note that for pure cooperative green power, a player like Ecopower goes even further, though with a waiting list and a different model.

Which supplier offers the best experience and service?

Both are well rated, with a slight edge to Bolt on experience. Bolt shows one of the best Trustpilot scores on the Belgian energy market, around 4.3/5 on more than 1,200 reviews, and its app is reputed the smoothest in the sector: consumption tracking, contract management and instant cancellation take just a few clicks. Mega holds its own, with a score around 4.1/5 on a much larger volume of reviews (over 2,800), a sign of a service proven at scale and a base of more than 300,000 customers. In practice, when I help a household very comfortable with all-digital and attached to service, Bolt often convinces; for someone who mainly wants a solid, cheap supplier without a second thought, Mega does the job.

Bolt or Mega for your profile?

The choice comes down to your priorities, not an absolute winner. If your goal is to pay the lowest possible price for electricity and the energy source matters little, Mega is the default choice: the cheapest, proven, present in all three regions. If you want genuinely local green power, a flawless app and the freedom to leave whenever you like, Bolt is well worth the few euros' difference. Special case: if you have solar panels, a battery or an electric car and can shift your consumption, Bolt's dynamic contract (indexed to the hourly market price) can save you more than the raw price gap. Conversely, a household that wants zero surprises and a locked tariff will look instead at a fixed offer, available at Mega but not in Bolt's logic.

How do you switch to Bolt or Mega?

Switching is free, causes no cut and is handled by the new supplier. You sign up online with Bolt (or Mega) with a recent bill to hand — for your EAN code and annual consumption — and the new supplier notifies the old one and organises the changeover. The physical network, run by your distribution operator (Ores, Fluvius, Resa or Sibelga depending on your municipality), does not change: electricity keeps flowing without interruption. Household contracts can be cancelled at any time with one month's notice, free of charge — Bolt even highlights instant cancellation from its app.

In short, Bolt and Mega are two excellent, very close challengers on price: Mega edges ahead on the raw amount, Bolt takes the lead on local green power, digital and flexibility. Choose Mega for the floor tariff, Bolt for green energy and experience. Before signing, always compare your exact case, and find the whole market in our ranking of electricity suppliers.