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angle-left Use Case: VITO/National scale case

Description Of The Use Case

Name of use case

Use case identification


System configuration(s)

Name of use case


[List of system configura­tions which this UC can be applied to]

[start with verb expressing key action]

Integrating optimized local multi-energy infrastructures in a national scale energy system to allow the integration of a large share of renewable energy sources.

Version management

Version management


Version No.




Approval status



[List of names]

[Difference to previous version]

[Draft, Work in progress, Review, Final]



Frank Meinke-Hubeny

First version

Work in progress

Scope and objectives of use case

Scope and objectives of use case


Energy systems are traditionally designed so that power energy supply meets demand on a national scale with transnational power grid interconnections and import of oil and gas. The rising share of distributed power and heat generation by renewable energy sources, local storage infrastructure and locally optimized multi-energy systems disrupt this traditional top-down operation and investment thinking.


National scale energy system models, such as the TIMES Belgium linear optimisation model, operate on the assumption that within a defined region (e.g. the respective country) current and future energy demands are met by existing and future service technologies. Optimization happens over a mid-to long term time horizon (e.g. decades) and on a large geographic scale. With energy services being supplied by technologies which are more and more geographically distributed, local optimisation takes on a more prominent role in the energy systems of the future.


For this use case we study the impact of locally-optimized multi-energy infrastructures (generation, storage, distribution and end-users consumption) on the capacity requirements and the operation of national scale infrastructure and technologies. The main question we address is to what extent multi-energy infrastructures can be scaled up to enable a transition to a low carbon energy supply at minimum costs.


[identify specific objectives]

O1: Analyse the impact of locally-optimised multi-energy systems (generation, storage and consumption) on the larger national energy system infrastructure and operation.

O2: Analyse these impacts for several levels of shares of renewables.

Belongs to use case group (if applicable)

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Energy System

Narrative of use case

Narrative of use case

Short description



Complete description

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Optimality Criteria

(Directly associated with objectives. E.g. by what metric to 'minimise' something)

Optimality Criteria




Reference to mentioned use case objectives













Use case conditions

Use case conditions


[Assumption; assumed relation to other systems: e.g.  higher level controller sends a signal]



[Triggering Event (update of control signal or disturbance ...)]


General remarks

General remarks

[everything which doesn't fit in any of the other categories]

Graphical RepresentationS Of Use Case

Graphical representation(s) of use case

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b) UML Sequence diagram(s)



Technical Details




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Actor name

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Actor description

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Step By Step Analysis Of Use Case Optional

Overview of use case scenarios

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Scenario conditions


Scenario name

Scenario description

Primary actor

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Steps – Scenarios

Alternative / complementary to sequence diagrams.


Scenario name :


Step No.


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Common Terms And Definitions

Common terms and definitions