REN – Rede Eléctrica Nacional announced this Thursday, the 9th, that it carried out on March 20th 'the first issuance of guarantees of origin for biomethane produced in Portugal' at the Aljustrel production plant. In a statement released today, the energy company notes that these issuances 'certify the origin of the biomethane produced by Capwatt at the Aljustrel Biomethane Production Plant', making REN 'the first entity to receive a production certificate for this renewable gas in national territory'. REN explains that these certificates prove to the consumer that part of the energy used was produced from a specific source and technology. 'In the case of renewable energy, the issuance of these guarantees allows for the certification of the energy's origin, enabling retailers and end consumers to demonstrate their renewable energy consumption, particularly in the context of their sustainability strategies and respective obligations,' the company says in the document. REN highlights that in the case of biomethane, these guarantees of origin are particularly relevant for 'ensuring the traceability and valuation of renewable gases', thus promoting the 'decarbonisation of sectors that are difficult to electrify'. Delays in the biomethane market leave the country with less energy sovereignty.