25/05/2026
The Draft Royal Decree to promote biomethane, currently under public consultation, begins to define how the mandatory biomethane pe*******on targets established in Article 26 of RDL 7/2026 will be applied within the Spanish gas system.
The message is clear: biomethane is no longer viewed as a complementary technology, but as a structural pillar of energy decarbonization. The proposal sets mandatory incorporation targets beyond transport:
• 0.5% by 2028
• 1.8% by 2030
• 6% by 2035
Applied to current gas demand (excluding combined cycle plants, cogeneration and transport), this could mean biomethane demand reaching nearly 12 TWh by 2035.
For context, transactions on the guarantees of origin platform barely exceeded 2 TWh in 2025. The question is no longer whether the sector will grow, but who will be able to deliver viable projects under this new framework.
The Royal Decree not only establishes quotas, but also key market rules:
• Social, territorial and environmental excellence labels as requirements for new plants.
• Regulated remuneration for injection infrastructure and reverse flow equipment.
• Mandatory transfer of direct connection lines to transporters or distributors.
• A stricter supervision framework, where failing to meet quotas becomes a very serious infringement.
At Greening, we have long worked under this approach: developing projects integrated into local environments, collaborating with farmers, cooperatives and industries, and applying the best available technologies to maximize efficiency and sustainability.
Because the future of biomethane will depend not only on producing renewable gas, but on developing robust, locally integrated projects aligned with new regulatory and social requirements.
