You know your euros.
Do you know your tonnes?
Hand someone a puzzle with missing, duplicate or warped pieces: they will not get a picture out of it. That is the work we do for you, in tonnes and in euros. To get started, our Sankey apps are free, online, no account needed: pick the one that looks like your data.
A study is a puzzle
From scattered pieces to a decision, in eight stages: data is collected, sorted, placed and fitted together, then turned into pictures and a story.
Two ways in
One engine, two doors.
An app
One app per shape of data, free to start. The domain apps deliver the puzzle already cut: the frame is given, the data comes from a connected database, the balance is included. Territory, LCA, MFA: €50/month excl. VAT.
Choose an appStudio Sankey
For a study whose frame and sources are yours to build: import assistant, reconciliation, views, publishing. Dataviz Studio €300/year, Réconciliation Studio €1,500/year excl. VAT, domain apps included.
Open StudioBuilt on real studies, not demos
Fifteen years of cumulated experience mapping agriculture, forestry, waste, biomass and energy flows for public agencies and industry. Studies that already link tonnes and euros: physical and economic supply-use tables, value build-up along the forest-wood chain, carbon coupling.
Energy flows in France: Metabol'Heat project
2025–2026
Half of France's final energy consumption goes to thermal uses — yet heat flows remain the least well described part of the energy system. For the CNRS Environnement Ville Société laboratory's ANR project Metabol'Heat, this national map follows energy from primary supply to end uses, useful and dissipated heat included.
Waste flows of the Pays Voironnais
2024–2026
What becomes of a territory's waste once it has been collected? For the waste management department of the Pays Voironnais urban community — 31 municipalities, 95,600 inhabitants, an in-house service handling more than 53,000 tonnes a year — this publication retraces three stages of a single journey. First a demonstration: the "flows" double page of the annual report, a process diagram whose links all have the same thickness, turned into a Sankey where proportions are finally carried by the drawing. Then an interactive map, commissioned in 2024, whose single flow graph reads from four angles — geographical destination, collection mode, waste type, and the crossing of the last two.
All of French agriculture, flow by flow: SOCLE project
2025–2027
What the fourteen main French agricultural supply chains produce, process, trade with the world and consume: 51 reconciled diagrams, from an overview of all agriculture — plant and animal supply chains side by side — down to each supply chain, partner countries and animal feed.
Forest-wood flows: BACCFIRE project
2023–2025
Four years of work on the fate of carbon along the flows of the French forest-wood chain: the BACCFIRE project (ADEME GRAINE, coordinated by the ONF) consolidates the methods for assessing wood's three climate effects — forest sequestration, storage in products, substitution of more emitting energy and materials.
They trust us
National agencies, research institutes, technical institutes and local authorities. Who they are, and what each one produces →
The method, in video
Why material flow analysis and Sankey diagrams help steer sustainable supply chains: explained on the wood value chain.
Who we are
TerriFlux is a deep-tech worker cooperative (SCOP) spun off from Inria, the French national institute for computer science. Our reconciliation engine comes from peer-reviewed research on territorial metabolism. We work with ADEME, INRAE, IGN and regional agencies, and everything we build ships in the open: the editor is open source.
Nine R&D projects since 2022 (with ADEME, INRAE, CNRS and Bpifrance) and open-access publications back everything we ship.
Why we do this
Physical flows have never been larger nor more invisible, and no statutory accounting measures them. Our manifesto.
Read the manifesto →Who will answer you
A small team doing all of it: the method, the code, the studies. The people, their backgrounds, and the research partner who links us to the lab.
Meet the team →Where it comes from
From a 2016 Inria PhD to contracts with IGN and FranceAgriMer: thirteen years of flow analysis, projects and publications included.
Our story →