Green gas supplier in Belgium — 2026
Compare green gas and carbon-neutral offers in Belgium: Belgian biogas or carbon offset — what each plan really covers.
All green gas plans, compared
4 plans · Typical profile 17,000 kWh/year · September 2026
| Supplier & plan | Annual cost | Price per kWh | Contract type | Source | Fixed fee | Regions | Commitment | |
|---|---|---|---|---|---|---|---|---|
| Trevion — Gas Flex★ Best price | €1,585 /yr | 0.0413 € | Variable | Biogas producer (BiogasTec) | No hidden fees | Flanders | No commitment | View offer |
| DATS 24 — Green GasGreen plan | €1,629 /yr | 0.0464 € | Variable | Belgian biogas (Colruyt) | €38.50/year | Flanders | No commitment | View offer |
| Mega — Smart Flex + CO₂ optionGreen plan | €1,818 /yr | 0.0557 € | Variable | CO₂ offset (option) | €68.90/year | Wallonia · Flanders | No commitment | View offer |
| Bolt — Carbon-neutral gasGreen plan | €2,182 /yr | 0.0724 € | Variable | CO₂ offset included | €147.31/year | Brussels · Flanders · Wallonia | No commitment | View offer |
Cheapest in September 2026: Trevion (~€1,585/year, 0.0413 €/kWh, Belgian biogas via BiogasTec, Flanders), price carried over as no new tariff sheet was published. The ranking does not move, but the gap widens at the top end: Bolt Carbon-neutral gas follows the gas market up to 0.0724 €/kWh (~€2,182/year, +€351), while DATS 24 Green Gas (~€1,629/year, 0.0464 €/kWh) and Mega Smart Flex with CO₂ option (~€1,818/year, 0.0557 €/kWh) are carried over. Note: physically injected biomethane is still rare in Belgium (~14 injection sites, ~416 GWh/year). Most "green gas" offers rely on Belgian biogas (DATS 24, Trevion) or carbon offset (Bolt, Mega), not 100% delivered biomethane.
Indicative prices from June 2026 (sources: CREG, CallMePower, Selectra). Energy prices change every month — always check the current offer with the supplier.
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