Svk EMDO BASE Ontologier (2026)

Source: Svenska kraftnät open-data portal — “Svenska kraftnäts semantiska webbramverk: ontologierna BASE och EMDO”.

Format: RDF / Turtle (TTL). Accessed June 2026.

Svk‘s published semantic web framework — two RDF ontologies that give electricity-market data machine-readable, reusable definitions. The genuinely novel item on Svk’s new open-data portal: a data-standards artifact rather than a report or a data feed.

What it is

• BASE — generella begrepp: general / shared concepts and data structures used across Svk’s data.
• EMDO — Electricity Market Data Ontology — the domain vocabulary for electricity-market data. Per the emdo.ttl file’s owl:imports (code lists) it covers: reserve products and directions, bidding zones and interconnectors, production types and categories, auction rounds, forecast horizons, units of measure, country codes, and trade-action directions.

BASE per its own description holds domain-independent concepts such as observations, forecasts, time references, identifiers, units, currencies and geographical areas. Stated purpose (dataset description): uniform, machine-readable descriptions with “tydliga begrepp för enkel tolkning och återanvändning” (clear concepts for easy interpretation and reuse). The ontology defines terms for describing electricity-market data published by Svk (e.g. the open datasets on the same portal — see Source - Svk Öppna Data (data.svk.se)); the portal page does not explicitly state which datasets use it.

Why it matters for the wiki

• It is a concrete instance of the data-standards layer that the NC DR FIS presupposes — FIS data must be exportable in structured, machine-readable form under a register-once principle, and the DHV will have to commit to a market-data model. EMDO is Svk already publishing a machine-readable market-data vocabulary.
• It sits in the same family as the IEC CIM (Common Information Model) and ENTSO-E transparency data models, but is narrower (market data) and Svk-authored.
• It is distinct from the device-communication protocols in Flexibility Communication Protocols (OpenADR, S2, OCPP, IEC 61850…): those move signals; EMDO defines what the data means. The closest analogue on that page is the semantic-interoperability thread (S2 / SAREF4ENER).

Key claims

• Svk publishes BASE + EMDO as RDF/Turtle ontologies at data.svk.se.
• EMDO covers reserve products/directions, bidding zones, interconnectors, production types, auction rounds, forecast horizons, units, country codes, trade-action directions.
• Intended for machine-readable, reusable electricity-market data descriptions; designed for describing Svk-published market data (v1.0.0).

Data gaps

• Explicit alignment with IEC CIM, ENTSO-E, or EU data standards — not documented
• Whether EMDO is intended to feed the DHV/FIS data model, or remain an open-data publishing vocabulary only

Relevance to existing wiki topics