The Exergy Imperative
Copyright 2026 Exergy Lab

The long-form guide (THE_EXERGY_IMPERATIVE.md), explanatory documentation,
and bundled profile data are licensed under the Creative Commons Attribution
4.0 International license (CC BY 4.0). You are free to share and adapt this
material for any purpose, including commercially, provided that you give
appropriate credit, link to the license, and indicate whether changes were
made. Full license text:
https://creativecommons.org/licenses/by/4.0/legalcode

The Python source code is licensed separately under Apache-2.0 as stated in
LICENSE and pyproject.toml.

Third-party numerical reference data and adapted descriptions retain their
original attribution and reuse terms, as described below and in the
`sources` sections inside the bundled data packs.

Some carrier conventions and interoperability patterns are derived from the
MIT-licensed Quantity and Quality project by Exergy Lab:
https://github.com/cdimurro/quantity-and-quality

XAI4Heat is referenced as an external CC BY 4.0 dataset and is not bundled in
this distribution:
https://data.mendeley.com/datasets/2mwc6x6kwb/1

The bundled country electricity-intensity history is derived from the Our
World in Data Energy dataset's publication of Ember Yearly Electricity Data.
Retain attribution to both Ember and Our World in Data. Ember data is provided
under CC BY 4.0:
https://ember-energy.org/data/yearly-electricity-data/
https://github.com/owid/energy-data

Greenhouse-gas warming potentials and Tier 1 combustion factors reproduce
numerical reference values from IPCC assessment and inventory materials.
Pollutant health-context descriptions are concise adaptations of public US EPA and
European Environment Agency materials. Source URLs and version identifiers
are retained in the packaged factor registry.

Regional public-health benefits-per-kWh numerical facts are transcribed with
attribution from the US EPA Third Edition technical report. The packaged data
retains the publication, table locator, source hash, AVERT/COBRA versions,
boundary, and EPA copyright-status URL. The numerical screening results are
not an EPA endorsement of this software. Source-document copyright conditions
may vary; see https://www.epa.gov/web-policies-and-procedures/epa-disclaimers.

Industrial steam, compressed-air, process-heating, and waste-heat screening
methods cite public US Department of Energy sourcebooks. The bundled radiative
reference case cites Petela (2003), "Exergy of undiluted thermal radiation,"
doi:10.1016/S0038-092X(03)00226-3.

Example local-file adapters name Energy Institute and IEA workbooks solely to
describe user-controlled field mappings. They contain no publisher data and do
not grant any right to download, transform, redistribute, or publish derived
data. Users must comply with the terms applicable to their own copies.

Optional connector configurations reference World Bank World Development
Indicators, Copernicus/ECMWF ERA5-Land, EC-JRC EDGAR, US EPA eGRID, the US DOE
ITAC/IAC database, and the Foundational Industry Energy Dataset. No values from
those sources are bundled by these connectors. Users must retain the selected
release's attribution, review its source and upstream terms, and comply with
the conditions applicable to their own downloaded files and derived outputs.
