Top 6 best Green electricity 2026
The best green electricity in Belgium in 2026 comes from the citizen cooperatives Ecopower and Cociter, the only ones to score a perfect 20/20 in Greenpeace's environmental ranking. They rely on genuinely Belgian renewable generation — wind, solar, hydro — not on guarantee-of-origin certificates bought to 'green' on paper power produced elsewhere. Behind that pair, EnergyVision (18/20) and Aspiravi Energy (17/20) offer a credible alternative without joining a cooperative. This ranking compares green electricity suppliers on what really matters: the real origin of the energy, the Greenpeace score, the price per kWh and contract flexibility. It also flags that some highly visible players, such as Bolt, remain middling (13/20) despite green messaging. Editorial selection, no affiliate links or sponsored placement: prices are indicative (June 2026, about 3,500 kWh/year) and change, so check your case via the official CREG, VREG or CWaPE comparator before signing.
Updated 4 July 2026
How do you recognise genuinely green electricity?
Genuinely green electricity rests on real, traceable renewable generation, not just a commercial label.
In Belgium, any supplier can display a 'green' offer by buying guarantee-of-origin certificates: these certify that an equivalent amount of renewable electricity was produced somewhere in Europe, but not necessarily by the supplier or in Belgium. That is the main trap. By contrast, players such as Ecopower, Cociter, EnergyVision or Aspiravi directly produce or finance Belgian renewable energy — wind, solar, hydro. Greenpeace's 'Mon électricité verte' ranking cuts through the confusion by scoring each supplier's real commitment out of 20, factoring in its own generation and investments. So the right habit isn't to trust the word 'green' on the homepage, but to check the Greenpeace score and the declared origin of the energy before signing.
Which suppliers are the greenest in Belgium in 2026?
The greenest suppliers in 2026 are the citizen cooperatives Ecopower and Cociter, with a perfect 20/20 in the Greenpeace ranking.
Both cooperatives cover all their deliveries with sustainable generation and keep investing in new renewable projects. Just behind, EnergyVision makes a strong gain with 18/20, driven by its Belgian solar production, and Aspiravi Energy holds 17/20 thanks to its wind base. Trévion, long very well rated, slips a little but remains recommendable around 16/20. Greenpeace also sets a simple benchmark: for genuinely green electricity, aim for a supplier scoring at least 15/20. Below that threshold, the real renewable commitment is judged insufficient. That is the case for several large multi-energy players, flagged for still betting on fossil fuels despite green messaging.
Should you choose a citizen cooperative?
A citizen cooperative is the greenest choice, provided you accept how it works.
With Ecopower or Cociter, you don't just sign a contract: you buy shares and become a member. The electricity then comes from wind and solar parks owned by the members themselves, which guarantees local origin and transparent governance. In return, the model is less flexible than a classic supplier: membership implies a commitment, buying shares is an upfront outlay, and the offer is sometimes limited to certain regions or subject to consumption conditions. For a household whose absolute priority is ecological impact, that trade-off is worth it. For anyone who wants green without a membership constraint, EnergyVision or Aspiravi are a good alternative, with a classic contract and a solid environmental score.
Does green electricity really cost more?
No, the price gap with a classic offer is most often modest, even nil.
Belgian cooperatives and green suppliers show tariffs close to the market, around €0.17/kWh for an average household, barely more than the cheapest variable offers. The difference is more about the contract type (fixed cooperative, variable) than about the green colour of the energy. A 3,500 kWh/year household moving from a top-of-market grey offer to a green cooperative can even come out ahead, because the most expensive suppliers aren't the greenest — quite the opposite. The real extra cost, when it exists, is a few tens of euros a year, to weigh against a verifiable renewable origin. Always compare at equal consumption, price per kWh and standing charge included, via the official comparator.
How do you switch to a genuinely green supplier?
Switching to a green supplier is free, done online, and causes no power cut.
The process is the same as any supplier switch in Belgium: the new supplier handles the changeover and notifies the old one, the physical network (Ores, Fluvius, Resa, Sibelga) doesn't change, and electricity keeps flowing. Three steps are enough. First, check the Greenpeace score and the energy origin of the supplier you're eyeing — aim for at least 15/20. Next, compare the price per kWh and standing charge at equal consumption via the official comparator, so you don't confuse green with expensive. Finally, if you choose a cooperative, budget for the share purchase and read the membership conditions. Have a recent bill ready for your EAN code and a meter reading; the switch takes a few minutes and your next bill reflects the new contract.
Comparison table
Methodology : Independent editorial ranking based on Greenpeace Belgium's 'Mon électricité verte' environmental ranking (2026 edition), the declared origin of generation, public tariff sheets and the official comparators (CREG, VREG, CWaPE). Prices are indicative for a 3,500 kWh/year household (recorded June 2026) and change: the official comparator gives the exact figure for your meter. A supplier is judged on real ecological commitment, not on its marketing. No affiliate links, no sponsored placement.
Sources : Greenpeace — Mon électricité verte (supplier ranking) · écoconso — which electricity supplier is the greenest? · CREG — official electricity price comparator · CWaPE — Walloon energy regulator
Frequently asked questions
Which is the greenest electricity supplier in Belgium in 2026?
The citizen cooperatives Ecopower and Cociter top the 2026 Greenpeace ranking with a perfect score of 20/20. They rely on genuinely Belgian renewable generation and invest in new wind and solar parks.
Is Bolt really a green supplier?
Bolt offers Belgian green electricity but scores only 13/20 in the 2026 Greenpeace ranking, partly because it belongs to the Luminus group. It's a decent choice on price, but not the greenest on the market.
Is there a minimum Greenpeace score for real green?
Greenpeace recommends choosing a supplier scoring at least 15/20 for genuinely green electricity. Below that, the real renewable commitment is judged insufficient, even if the 'green' label is displayed.
Is green electricity more expensive?
Not necessarily. Cooperatives like Ecopower or Cociter show tariffs close to the market (about €0.17/kWh). Any extra cost is modest, in exchange for a verifiable renewable origin.
What is a citizen electricity cooperative?
It's a supplier owned by its members: you buy shares and become a member, and the electricity comes from renewable parks owned by the cooperative. Ecopower and Cociter are Belgium's best-known examples.
Are guarantee-of-origin certificates enough to make electricity green?
No, not on their own. A supplier can buy certificates to 'green' grey electricity on paper. Real green rests on genuine renewable generation: that's what the Greenpeace ranking measures.
Is this ranking independent?
Yes: an editorial selection based on the Greenpeace ranking, the declared energy origin and the official comparators, with no affiliate links or sponsored placement.