Bioreciclaje de Cádiz, Enagás Renovable and Waga Energy to develop Andalusia RNG project

A new renewable natural gas (RNG) facility is to be built at the Medina Sidonia landfill in Cádiz province, following an agreement between Bioreciclaje de Cádiz, Enagás Renovable and French energy firm Waga Energy.

The project, scheduled to be operational in 2027, will use Waga Energy’s patented WAGABOX technology to capture and upgrade landfill gas into biomethane.

Once complete, the plant is expected to produce up to 273,000 MMBtu of RNG each year, equivalent to the energy consumption of around 16,000 Spanish households. By replacing fossil natural gas, it is projected to prevent approximately 21,000 tonnes of carbon dioxide equivalent emissions annually.

Bioreciclaje de Cádiz, a public-private consortium formed by Valoriza, GS Inima and the regional waste management authority, manages the Miramundo–Los Hardales Environmental Complex where the project will be based.

Currently, biogas recovered from the site is used to generate electricity and heat, but the new facility will allow renewable gas to be injected directly into the national grid.

Under the terms of the agreement, Waga Energy will build, own and operate the gas upgrading unit, supplying RNG to Bioreciclaje de Cádiz and Enagás Renovable, who will oversee grid injection and commercialisation. The contract will run until 2038.

Executives from the three partners said the initiative marked a milestone in advancing the circular economy and strengthening Spain’s energy transition.

José Antonio García Galdón of Valoriza said the project demonstrated a firm commitment to sustainable development by turning waste into resources.

Francisco de los Santos, director of GS Inima, described it as a project that redefines waste management while delivering tangible benefits for the community.

Antón Martínez, chief executive of Enagás Renovable, said it reaffirmed the company’s drive towards a sustainable future through innovation and efficient waste management. Baptiste Usquin, chief executive of Waga Energy Spain, added that the new plant represented concrete action against climate change and a step towards energy independence in Andalusia.