You know your euros.
Do you know your tonnes?
Decisions are made in euros. But euros don't tell you what comes in, what goes out, or what gets lost. TerriFlux reconciles tonnes, prices and euros in a single model: when the numbers contradict each other, the computation makes them consistent. To get started, our Sankey diagram editor is free, online, no account needed.
What the flows reveal
Two readings of the same model, two families of risk.
Euros, right to left
Where the money comes from, where it goes. A sector that depends on one subsidy, an outlet that weighs too much: financial risks show at a glance.
Tonnes, left to right
What comes in, what goes out, what gets lost. An imported resource, water, energy: physical dependencies appear on the same diagram.
Together they show where your supply chain is solid — and where it breaks.
From raw data to a published diagram
Import, reconciliation, styling, publication: watch the full pipeline unfold, from raw data to a published diagram.
At the heart of the pipeline, the computation that makes your numbers consistent:
At every scale
Statistics exist at the national scale. Decisions are made in a territory. Our downscaling method, born from Inria research on territorial metabolism, distributes national flows region by region, down to the territory, with confidence intervals. The same model reads from the whole country to a single valley: zoom out for the global stakes, zoom in for the local risks. See the method →
One engine, three levels of depth
OpenSankey and the two MFASankey editions share the same engine. Start with a drawing. End with a defensible material balance — each tier brings your diagrams closer to the full model, where materials and value line up.
OpenSankey
The free, open-source editor. Draw and style Sankey diagrams, import 3-column data, export images. No account needed.
Start drawing
MFASankey Production
Professional dataviz: hierarchical nodes with drill-down, data tags to switch years/scenarios, views, published interactive diagrams you can embed anywhere.
See pricing
MFASankey Analyse
The MFA engine: data reconciliation under constraints, uncertainty propagation, completion from as little as 10% of measured data. Excel in, balanced flows out.
See pricingComing from another tool?
Your existing work opens directly, with no retyping.
MFASankey is the new generation of Sankey and material-flow-analysis software. It inherits what its elders do best — the immediacy of SankeyMATIC, the scientific rigour of STAN, the industrial polish of e!Sankey — and adds what none of them offer: unfolding a node into its sub-flows and folding it back, computing intervals when the data is uncertain, and reconciling tonnes, prices and euros.
From STAN
Open your .smfa files directly and keep working on your models in the
browser.
From SankeyMATIC
Paste your source [value] target text as-is, including colors and layout
settings. Then make it interactive.
From e!Sankey
Browser-based, transparent public pricing, and an actual reconciliation engine: not just balance checks.
What we learned from e!Sankey →Built 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.
They trust us
National agencies, research institutes, technical institutes and local authorities.
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. Discover our research →