eNextHub/nxsut: nxsut 3.0 - Global Environmentally-Extended Supply-Use table in Hybrid Units

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides an updated, reproducible global input-output dataset for LCA and MRIO modeling.

🏢実務担当者:Offers physically-based emission factors and supply-use structures to refine Scope 3 inventories.

🏛政策担当者:Supports evidence-based carbon price design and border adjustment with up-to-date global trade-linked footprint data.

nxsut 3.0 - Global Environmentally-Extended Supply-Use table in physical units Supply-use database for environmental impact analysis built by eNextGen and the SESAM research group of Politecnico di Milano from EXIOBASE Hybrid v3.3.18 with MARIO. How it is built The original EXIOBASE database is updated in terms of electricity supply (from EMBER) and trade mixes (from ENTSOE) to represent electricity production and trade of 2025. ENTSOE provides data only for European countries: development releases - for internal use only - of nxsut included other data from other sources to represent electricity trades for non-EU countries. nxsut 3.0, however, relies only on ENTSOE for licensing purposes. Plus, we did not notice significant differences in electricity carbon footprint of non-EU countries even without applying trade corrections. Electricity commodity is pooled: this means that, although the original database is in Isard format, a fictitious activity - Electricity - supply - is introduced in each region, absorbing all domestic and imported consumption of electricity of its region. Electricity trade is then represented on the supply matrix, with a "Chenery-Moses-like" arrangement, where in each region, all Electricity - supply activities domestically produce or export a fictitious commodity - Electricity - need. A didactic example is described on the MARIO documentation The nxsut builiding pipeline imports also the procedure provided by Ghezzi et al to introduce +20 new activities related to innovative steelmaking technologies, including hydrogen production. Ghezzi et al also introduce a reallocation of blast furnace gases emissions to the iron and steel manufacturing activity, which makes both electricity and steel carbon footprint more aligned to literature ranges in most regions. Raw inputs are progressively governed in nxbase, the eNextGen data backbone, and reach this pipeline through nxbase's public read-only API (see Data access below). Rationale nxsut core use cases are carbon footprinting and modelling: while the original EXIOBASE Hybrid database refer to 2011, we strongly believe using it in 2026 for these specific purposes still makes a lot of sense, thanks to its physical-unit representation of the global economy and to the workflow we put together to align its result to more recent literature, where it matters most. A blogpost on eNextGen's website shows how electricity carbon footprints from nxsut compares with the most authoritative sources in literature. Carbon footprint of steel are aligned to the one showed in Ghezzi et al. Other work is ongoing - see section below - to make these data easily updatable over time and pragmatically useful for these applications. Contents | Path | What it is | | --- | --- | | gen_v3.ipynb | v3.0 generator (current): MARIO-native pipeline, EMBER supply mix + open ENTSO-E trade mix via the nxbase query API. Fully open input chain — the publishable version. | | support/ | Adapters and input files (aggregation maps, EMBER remapping, the nxbase query client) — being retrofitted into nxbase sources per WP0. | | paths.yml | Public template for the per-user paths to raw inputs (EXIOBASE flows, EMBER release) and export target. Copy to paths_personal.yml (git-ignored) and fill in your real paths. | Requirements Python with mario, instructions here EXIOBASE Hybrid v3.3.18 flow files (paths to be configured in paths.yml). Note MARIO has an automatic database downloader Data access The pipeline reads its input data — EMBER electricity supply mixes and ENTSO-E bilateral trades — from nxbase's public read-only query API. You do not need an nxbase checkout (the nxbase repository is currently private): the API serves the open-access sources anonymously, with no login or key. The API base URL is nxbase_api in paths.yml (default https://enextgen.it/nxbase-api). support/nxbase_client.py wraps the calls (/data.csv, /sets/*) and reshapes the rows into the structures MARIO consumes. Only open-visibility sources are anonymously reachable (EMBER generation, ENTSO-E trades, and the published nxsut releases). Versioning v1.0 / v2.0 — legacy supply-mix / + bilateral electricity trades on the proprietary Electricity Maps mix. Internal use only, not in this public repository (gen_v1.ipynb / gen_v2.ipynb are git-ignored — the mix is not redistributable). v2.1 — retired (2026-07-21): the MARIO-native pipeline on the proprietary Electricity Maps mix. Superseded by v3.0, same pipeline on an open mix. v3.0 (current) — MARIO-native pipeline, open ENTSO-E trade mix (gen_v3.ipynb). Fully open input chain — the publishable version. Ongoing work A paper on embedding photovoltaic supply chain is currently under review and will be hopefully embedded soon Updates of supply and trade mixes is under investigation for other commodities License Licensed under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) — see LICENSE. Share and adapt for any purpose, including commercially, with appropriate credit and under the same license (ShareAlike). nxsut derives from EXIOBASE Hybrid v3.3.18 (CC BY-SA 4.0), so the ShareAlike term is inherited. Copyright © 2026 Nicolò Golinucci (eNextGen), Lorenzo Rinaldi (Department of Energy, Politecnico di Milano). Attribute as: "nxsut 3.0 — Nicolò Golinucci & Lorenzo Rinaldi, eNextGen (CC BY-SA 4.0)".

• openalex https://doi.org/10.5281/zenodo.21619797first seen 2026-08-02 16:42:28 · last seen 2026-08-02 16:42:31