The partners of the Dutch InterFlex demonstrator were Enexis, TNO and Elaad. Enexis is the second largest DSO in the Netherlands, TNO is a Dutch research and development organisation and Elaad is a knowledge centre on smart mobility. The Strijp-S area in Eindhoven is one of the focus areas within the city for design & technology innovations.

The goal of the demonstration was to explore how a DSO can use flexibility for a cost- effective grid infrastructure. To do this, the following set of project goals was formed:

  • Use flexibility for grid management purposes
  • Scalable solution & architecture
  • Design and implement functional & business layers: flexibility trading
  • Implement an open market architecture for flexibility
  • Determine the merit order for flexibility.

To achieve these goals, a model was designed to describe the systems and mechanisms on operational, enterprise and market levels, which enable the provision of ancillary services to the distribution grid via a flexibility market.

The model aimed at testing:

  • Technical innovations on ICT systems and communication,
  • Organizational innovations regarding market mechanisms, contractual agreements and business models.

The system architecture was based on modules that were interconnected through a set of open interfaces and protocols. These subsystems facilitated the different role attributions and functions that structured the open flex market. The systems were developed or adapted together with different market parties – technical and commercial aggregators – who see the deployment as a business opportunity.

In the model different roles and functions were described in relation to the flexibility market model.


  • Distribution System Operator (DSO)
  • Commercial Aggregator (CA)
  • Local Aggregator (LA)
  • Charge Point Operator (CPO)
  • DER owner


  • Grid Management System (GMS)
  • Flexibility Aggregation Platform (FAP)
  • Local Infrastructure Management System (LIMS)
  • Charge Point Management System (CPMS)


Eindhoven Strijp-S area, The Netherlands


  • Deployment of a stationary battery for flex delivery.
  • Installation and deployment of smart charging EV stations for flexibility.
  • Building ICT systems based on open protocols for delivering flex on a market place model.


  • Enexis – demo leader
  • ElaadNL
  • TNO


  • Jedlix
  • Sympower
  • Croonwolter&Dros


  • UC1: Enabling ancillary services, congestion management, voltage support for PV integration using centralized, grid-connected storage systems to improve grid observability of prosumers, promoting batteries in multi-service approach.
  • UC2: Enabling the optimal activation of all available local flexibilities offered by the locally installed EVSE’s for congestion management.
  • UC3: Validating technically, economically and contractually the usability of an integrated flex market based on a combination of stationary battery storage and EV chargers


  •  Forecasting algorithms for DSO
  • Interflexperience game on flexibility awareness:
  • Research scenarios for investigation of different flex situations


Dutch Demonstrator

Testimonial of the Dutch project team


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