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ZERO – Associação Sistema Terrestre Sustentável logo

ZERO – Associação Sistema Terrestre Sustentável

ZERO – Associação Sistema Terrestre Sustentável
ZERO – Associação Sistema Terrestre Sustentável
ZERO – Associação Sistema Terrestre Sustentável
ZERO – Associação Sistema Terrestre Sustentável

ZERO is a Portuguese environmental NGO, founded in 2015, that advocates for sustainability on energy, pollution, waste, biodiversity and social equity.

ZERO – Associação Sistema Terrestre Sustentável is a non-profit environmental non-governmental organisation. It was founded at the end of 2015 by around a hundred people committed to promoting sustainable development in Portugal. Its mission is to intervene proactively in Portuguese society in defence of sustainability, in the conviction that only a balance between the environment, society and the economy makes it possible to build a more cohesive world that respects the planet's limits. This mission translates into five ambitions: zero fossil fuels, zero pollution, zero waste of resources, zero destruction of ecosystems and biodiversity, and zero social and economic inequality. ZERO engages with public policy, takes part in public consultations, publishes studies and technical reports, and runs campaigns and awareness-raising initiatives. It also works with companies on corporate sustainability programmes. Its areas of work include energy and climate, mobility, air quality and noise, waste and the circular economy, water, agriculture and nature conservation. Headquartered in Lisbon, ZERO is a member of several European networks of environmental organisations and cooperates with national and international partners to broaden its impact. It has a regular presence in the media and mobilises the public through social media, podcasts, petitions and events.

Our Goal

ZERO works to defend the values of sustainability in Portuguese society. It is striving for zero fossil fuels, zero pollution, zero waste of resources, zero destruction of ecosystems and biodiversity, and zero social and economic inequality.

Our Wishes

ZERO invites citizens, companies and volunteers to join its cause and to support its advocacy campaigns and corporate sustainability programmes.

In the Pulse

Open calls

Become a European Climate Pact Ambassador

Open call for applications to become an Ambassador of the European Climate Pact, promoting climate action in your community, sector or region as part of a European network. Run by the European Climate Pact (@ourplanet_eu), shared here by ZERO.

Apply by 31 Oct 2026