Idea: SDMX ZSE
https://www.w3.org/TR/vocab-data-cube/ https://medium.com/@sklarman/linked-open-statistical-data-served-simply-ead245bf715
IDEA: Organize a database (Postgres) using the DataCude vocabulary and a SDMX schema. Put a GRAPHQL interface (Hasura) on top that creates valid SDMX-JSON. User interface could be Excel only with a powerful plugin. Could also have a web-based (read-only) emission page.
Ground layer generic, Excel plugin generic with possibly some emission inventory-specific sugar), website specific