# Opposition to biomethane projects in Portugal

> Live situation record from CLSTR: https://clstr.news/situations/opposition-to-biomethane-projects-in-portugal
> Updated: 2026-09-30T18:33:35.000Z. Sources: 6. Developments: 2.

Opposition to proposed biomethane production projects by the company Gás da Terra has emerged across multiple Portuguese municipalities. In Marés, the Municipal Assembly unanimously approved a motion to oppose the plant, with political parties citing risks such as odors, noise, water resource issues, heavy vehicle traffic, and potential fires or explosions.

Similar resistance has developed in Alenquer and Torres Novas, where citizen movements have collected over 10,000 signatures to urge the Portuguese Environment Agency (APA) and the government to deny authorization. Protesters in Torres Novas highlight that the Árgea project would be located approximately 200 meters from residential areas, while the Marés project is situated about 400 meters from homes. Local authorities in Torres Novas and Entroncamento have also expressed formal opposition to these installations.

## Timeline

### 2026-09-30: Residents protest biomethane projects in Alenquer and Torres Novas

Over 10,000 residents and local municipalities in Portugal are opposing two Gás da Terra biomethane projects due to proximity to homes and concerns over waste treatment and heavy traffic.

2 sources. https://clstr.news/cluster/residents-protest-biomethane-projects-in-alenquer-and-torres-novas

### 2026-09-27: Municipal Assembly opposes biomethane plant in Marés

The Municipal Assembly has unanimously approved a motion opposing the installation of a biomethane plant in Marés, citing concerns over local safety, noise, and environmental impacts.

4 sources. https://clstr.news/cluster/municipal-assembly-opposes-biomethane-plant-in-mars

---
Cite as: Opposition to biomethane projects in Portugal. CLSTR, https://clstr.news/situations/opposition-to-biomethane-projects-in-portugal