Glossary

Adaptive Case Management - approach for handling complex, unpredictable processes where knowledge workers direct the flow rather than following a predefined process diagram.

The Elhub market role that retrieves data on behalf of an end customer, with that customer’s consent. Tvimenning is approved in this role.

An AI system that independently plans and executes multi-step tasks by using tools, making decisions and adapting along the way.

An infrastructure layer sitting between applications and AI models, handling authentication, logging, rate limiting and model selection.

Application Programming Interface - standardised interface that allows two systems to communicate with each other.

Component that acts as entry point for API traffic - handles authentication, rate limiting, and routing to backend services.

Practice of managing API changes without breaking existing integrations - typically through URL versioning (/v1/, /v2/).

Linking of separate IT systems to exchange data and processes across organizational boundaries.

Person learning a trade through practical work combined with theoretical training - a key part of vocational education in Norway.

Open OASIS standard for secure message exchange over HTTP - the transport protocol required by Peppol, increasingly seen in European power-market messaging too.

Microsoft's cloud-based integration service for automating workflows and connecting enterprise systems, APIs, and data services.

Power that Statnett buys and sells in real-time to maintain system frequency stability at 50 Hz.

Someone you have agreed with in advance to help in a crisis. Named word of the year 2024 by the Norwegian Language Council, and used by Norway's civil protection agency about household preparedness.

Revenue arising when capacity limitations in power transmission between price areas exist - accrues to the system operator.

Business Process Model and Notation - graphical notation for modeling business processes and workflows.

Elhub’s process specifications. Each BRS describes one market process step by step - who sends what, when, and what happens when something fails.

Martial artist and philosopher - "Be Water" as a metaphor for adaptability, precision and continuous improvement.

Digital certificate issued to a company for secure machine-to-machine authentication - required for access to Elhub's API in Norway.

Systematic measurement and reporting of greenhouse gas emissions - divided into scope 1 (direct), scope 2 (purchased energy) and scope 3 (value chain).

The common grid model - the assembled data set European TSOs agree on, built from each area's own model and used as the basis for capacity calculation and operational security analysis across borders.

Approach to development where applications are designed from the ground up for cloud infrastructure - containers, microservices, and automated scaling.

Domain knowledge and technical skills - a core value for Tvimenning and a prerequisite for delivering quality in the energy sector.

Measures and processes for managing situations where demand for grid capacity exceeds supply - between bidding zones or within the distribution network.

Process of transforming data from one format or system to another - for example in system migrations or API integrations.

Correcting errors in data that already exists - duplicates, gaps, misspellings and inconsistent formats - most often in master data and most often after the fact.

The Elhub market role that collects metering values from metering points and submits them to Elhub. Tvimenning is approved in this role.

The Elhub market role a grid company holds for submitting market messages to Elhub. Tvimenning is approved in this role.

Tvimenning's internal self-developed platform for agentic software development with Claude Code - demonstrates that we dogfood our own methods.

Containerisation platform that packages applications and dependencies in isolated, reproducible units.

The six characters in UTILMD, INVOIC and CONTRL are not abbreviations someone invented locally. Each message type is its own standard in the UN EDIFACT directory, and the name is a six-character mnemonic.

Energy Data Exchange - ENTSO-E's platform for structured exchange of power system data between European TSOs, primarily network models and capacity data.

Collectively owned Norwegian company developing shared digital infrastructure for grid companies - including a national grid model and digitalised connection process.

A numerical representation of text (or other data) that captures semantic meaning, so that similar concepts end up close to each other in a mathematical space.

Norwegian regulation setting requirements for emergency preparedness and security of the power supply.

Proactive role at DSOs (such as Lnett, Elvia and Tensio) acting as advisor and liaison between the grid company and customers - mapping future capacity needs and optimising grid capacity through dialogue with property developers and municipalities.

Storing everything that has happened as an immutable sequence of events, and deriving current state by replaying them, instead of overwriting.

General Data Protection Regulation - EU's data protection regulation, applicable in Norway via the EEA Agreement.

Geographic Information System - system for collecting, storing and analyzing location-based data - used in network mapping and planning.

A unique id that follows a component for its entire lifetime, across every system it appears in. The technical term for it is UUID.

The transition from test to live operation against Elhub. The final step in the approval process, and the only one that cannot be undone without someone noticing.

Google's web-based development tool for experimenting with and building applications on Gemini models.

Google's suite of productivity tools - Gmail, Docs, Drive, Meet and more.

Query language for APIs where the client determines exactly which data it needs - alternative to REST.

Energy lost as heat during electricity transmission - the grid company is responsible for covering and reporting grid losses.

NVE's framework for grid tariff calculation - contains fixed, energy, and capacity components to fairly distribute grid costs and encourage balanced consumption.

Fees charged by grid companies for electricity transport, regulated by the regulatory authority under the revenue cap system.

The framework that wraps, drives, tests and constrains an AI agent. The model supplies the power; the harness decides where it goes.

Helping others - one of Tvimenning's core values, rooted in the Nordic tradition of voluntary collective effort and the belief that strong communities are built by people who contribute.

Not an acronym, but the Norwegian word "hevd" - a legal right you must keep in continuous use for it to hold. Tvimenning's managed service for data quality, across the entire system landscape.

Swedish software company, founded in Linköping in 1983. Known for ERP and maintenance solutions aimed at asset-heavy organisations, and widely used among Nordic energy and industrial companies.

Integration Platform as a Service - cloud-based platform for integrating applications and data between systems.

JavaScript Object Notation - lightweight data format for data exchange between systems, standard in REST APIs.

Distributed event streaming platform - widely used for real-time data pipelines and event-driven architectures.

Open source container orchestration platform - automates deployment, scaling and management of containerised applications.

Lightweight Directory Access Protocol - protocol for accessing and maintaining directory services such as Active Directory.

Development approach using visual tools and pre-built components - reduces the need for manual code writing.

The nine roles Elhub divides the market into. The role says what a party does in a message exchange, not who the party is, and approval is granted per role.

The Elhub market role a grid company holds for establishing and validating meter values. Tvimenning is approved in this role.

Experienced person who guides and supports a less experienced person in professional and personal development.

Architecture where an application is split into small, independent services that communicate via APIs.