Founded 1999 Utrecht

Systems thinking for a regenerative world

Except is an integrated sustainability consultancy. We help organizations navigate complexity, align purpose with practice, and build lasting regenerative capacity.

Explore our work Our approach

Integrated sustainability

We work across strategy, design, and implementation to embed sustainability into the core of organizations and projects.

Strategy & Roadmapping

Long-term sustainability strategies grounded in science. From circular economy transitions to net-zero pathways, tailored to your context.

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Circular Design

Circular economy principles applied to products, buildings, and supply chains. Material flows, lifecycle analysis, and regenerative material selection.

Urban & Regional Systems

Advising cities, regions, and developers on integrated area development, climate adaptation, and social infrastructure for resilient communities.

Organizational Change

Participatory processes that build sustainability capability across teams, from board-level governance to everyday operational practice.

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Sustainability is not a discipline to be added, but a lens through which every decision must be reframed.

Except Manifesto

Selected projects

A cross-section of systems work delivered across sectors and geographies since 1999.

Circular Economy

Rotterdam Circular Port

Strategy and roadmap for one of Europe's largest ports to close material loops and reduce embodied carbon across its industrial ecosystem.

Urban Development

Merwede District

Integrated sustainability framework for a 6,000-home car-free district in Utrecht, spanning energy, water, biodiversity, and social cohesion.

Climate Strategy

National Infrastructure Net-Zero

Climate adaptation and mitigation strategy advising a national infrastructure agency on aligning its portfolio with 2050 climate goals.

Rooted in systems, driven by impact

We believe sustainability is not a discipline to be added but a lens through which all decisions must be reframed. Since 1999, we have been developing an integrated approach that connects ecological integrity, social equity, and economic viability into coherent strategies.

Our work sits at the intersection of analysis and imagination. We combine rigorous modeling and research with creative design thinking to produce outcomes that are both evidence-based and inspiring. Every engagement is a collaboration, built on trust, curiosity, and a shared commitment to lasting change.

25+
Years of integrated practice
400+
Projects delivered globally
50+
Team members across disciplines
100%
Independent, mission-owned

Get in touch

Whether you have a project in mind or want to explore how we might work together, we would love to hear from you.

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