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The Sustainable Effect We connect sustainability to your business, we are
The Sustainable Effect
The Sustainable Effect

We believe in a bright future

A future in which organisations explore creative ideas and collaboration to perform better, and lead by example.

Our team of sustainability consultants supports the Event, Cultural and Tourism industry build back better through a sustainable approach.

Our mission: Inspire and empower organisations to continuously improve sustainability performance.


Build sustainable strategy, engage teams, define and implement road map


Benchmark, evaluate sustainability maturity, assess specific impacts


Improve sustainability knowledge, empower stakeholders

Communication and standards

Promote awareness, report and share performance, implement certified standards

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    The Sustainable Effect Team

    Our Team

    What they say

    Aurore Jeannin

    Sustainability is an important pillar in Travel to Tomorrow, Visit Flanders strategic policy vision. With Melanie and Siviglia we have worked together to get deeper insights in the position of Flanders compared to other destinations. The delivered GDSIndex Benchmark was very clear, useful and comprehensive for our next steps.

    Evelyne Bardyn Senior Meeting Manager, VISITFLANDERS

    As a managing director at Destination we had a unique an authentic experience by implementing a more sustainable approach in our incentives and events. Co-creating and adapting our programs with Siviglia have been an unforgettable journey. Destination is very proud to embrace corporate social responsibility practices, contributing to local initiatives, striving for a sustainable society.

    Ellen Van den Branden Managing Director, Destination.be

    Mélanie is accompanying our Parisian Events and Communication agency on our CSR policy. She brings in her expertise on the strategic aspects, team trainings, ISO 20121 certification with a sensible and result oriented approach. The beginning of a long collaboration!

    Aurore Jeannin Associate Director, Agence Mythologies