Biomethane blending obligation for natural gas sales

Source: International Energy Agency
Last updated: 24 June 2026

Draft Royal Decree establishing a minimum annual biomethane quota in natural gas and LNG sales for non-transport uses. The obligation would apply to gas suppliers and direct market consumers, starting at 0.5% in 2028 and increasing progressively to 6% by 2035, equivalent to around 10 TWh. Compliance would be shown through biomethane guarantees of origin. 

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