Bleen is a Brussels sustainability consultancy that helps organisations measure and cut their emissions, meet CSRD requirements and bring their teams along. It combines ESG consulting, consultants embedded in client teams and an academy of more than 50 workshops and training formats.
About Bleen Consulting
Bleen is a sustainability consulting boutique based on Avenue Louise in Brussels. Its team brings together engineers, economists, environmental scientists, facilitators and policy experts who share one idea: sustainability becomes real when it meets operations. It works through three offers: ESG consulting across seven practice areas, Capability as a Service with embedded consultants, and an Academy of workshops and training. Bleen reports that it has guided more than 100 organisations through their ESG transformation, in 9 industries, and trained more than 5,000 employees. Clients include Danone, Engie, IKEA, Air Liquide, SNCB, Elia, Pluxee and the City of Brussels. Projects range from the third-party verification of Pluxee's carbon footprint to a biodiversity strategy covering 358 Cofinimmo healthcare properties in 9 countries, and climate training for more than 1,400 Partenamut employees. Bleen also developed the Greenwashing Fresco, now used by teams such as IKEA's marketing functions.
They also worked with Bleen Consulting
Danone
Engie
IKEA
Air Liquide
SNCB
Elia
BNP Paribas Fortis
ArcelorMittal
What Bleen Consulting has delivered
SioenManufacturing
A first carbon footprint designed to be shared with the sector
As part of a project funded by the Walloon Region (Circular Wallonia) and Centexbel, Sioen needed its first carbon footprint, compatible with recognised standards and documented well enough to share learnings across its sector. Bleen mapped material and energy flows, set the boundaries, supported internal teams in collecting data across the value chain, applied recognised emission factors and checked results against industry benchmarks. A cross-functional ideation session then produced decarbonisation ideas, which Bleen ranked by impact and feasibility and turned into a phased roadmap with owners and timelines.
First carbon footprint completed, used as the reference for future climate management
Internal team trained on the calculation method and the main emission sources
Main reduction levers identified and a first climate roadmap in place
Pluxee already had a carbon footprint and an SBTi-approved reduction trajectory, and wanted both to stand up to GHG Protocol and EcoVadis expectations. Bleen challenged the existing scope 1, 2 and 3 data and calculation method, delivered a consolidated GHG inventory with an EcoVadis-ready reporting package, and stress-tested the SBTi trajectory against sector guidance. It then coordinated third-party verification with the accredited verifier Vinçotte, aligned with ISO 14064/14001, EcoVadis and the GHG Protocol.
A reliable, compliant carbon footprint ready for EcoVadis submission
Third-party certification launched with an accredited verifier
As part of its five-year Planet'UP programme, the Belgian mutual insurer Partenamut wanted every employee to understand which actions reduce greenhouse gas emissions. Bleen presented the 2tonnes workshop to the executive committee and secured sponsorship from the CEO and the sustainability manager, adapted the material to Partenamut, trained internal facilitators and ran a pilot before the large-scale rollout. Workshops were built into company events, and satisfaction, individual commitments and action ideas were measured after each session.
“Bleen est un partenaire de confiance et très apprécié au sein d’Elia. L’équipe est réactive, disponible et engagée. (...) J’apprécie particulièrement l’alignement fort entre la mission de Bleen et celle d’Elia, un engagement fort en faveur de la sustainability. Les consultants Bleen sont très professionnels, engagés et passionnés, ont une très bonne capacité d’analyse et d’excellentes qualités humaines.”
Tyl Dermine,Head of Customer, Market and System Transformation Implementation, Elia
“A great collaboration ! Drawing on their expertise and professionalism, Bleen was a key partner in the empowerment of our teams on sustainability thanks to their training to become "2tons workshop" ambassadors! We have appreciated their agility, while remaining ambitious in the execution, gathering insights on the food sector, tailoring their training to its specificities - and embarking us all with energy, pleasure and passion !”
Alice Lemesle,Senior Sustainability Manager, Danone
“Depuis 2024, Bleen accompagne notre organisation avec professionnalisme et engagement dans notre transition vers un modèle plus durable. Leurs ateliers de sensibilisation, notamment l’atelier 2tonnes, rencontrent un réel succès auprès de nos équipes grâce à une animation dynamique et constructive. En 2025, Bleen a également structuré et soutenu le réseau de nos référents Planète, contribuant à renforcer leurs compétences et à stimuler leur motivation. Leur approche, résolument orientée solutions, a permis une collaboration fluide et efficace. Nous partageons des valeurs communes fortes autour de la réduction de l’impact environnemental et de la justice sociale, ce qui rend ce partenariat particulièrement pertinent et porteur de sens.”
Chantal Verbois,Project Manager, Partenamut
“L’accompagnement de Bleen a permis d’identifier un outil de sensibilisation particulièrement pertinent face aux enjeux de résilience de la Ville de Bruxelles. L’atelier Mission Résilience, animé avec efficacité et dynamisme, a offert aux référents Plan Climat une compréhension concrète des défis liés à l’adaptation climatique, de la nécessaire transversalité des actions et des arbitrages à opérer en situation de crise, le tout dans une approche à la fois ludique et rigoureuse.”
Marion Julien,Project Coordinator, Climate Plan, City of Brussels
One day, real numbers. Meet the companies turning carbon strategy into measurable savings — and benchmark yours against Belgium's sustainability leaders. Seats are limited.
Real ROI case studies — companies saving up to €94k/year
Benchmark your climate strategy against 100+ industry peers
Leave with an actionable, board-ready reduction roadmap
