City of Arnhem adopts distributed energy system

The Dutch city of Arnhem has decided to develop a distributed energy management system using IoT technology. This new data management platform will enable the city’s energy managers to automate and oversee solar and wind power installations, electric fleet chargers, cold ironing (providing shoreside electrical power to a ship at berth) and battery storage, through a desktop and mobile application.

Renewable energy

The solar and wind energy produced at Kleefsewaard, an industrial park located east of the city, is used for charging electric vehicles across the city as well as powering the ships docked in its harbor. In order to maximise the use of local renewable energy, the City of Arnhem needed an energy management solution capable of predicting power generation, as well as optimising the vehicle charging and cold ironing, with the use of an additional energy storage unit.

Arnhem’s industrial park Kleefsewaard (photo credit: IPKW).

Mobile application

A mobile application, built on an open-source IoT platform powered by vendor OpenRemote, will enable the city’s energy managers and maintenance crews to evaluate the performance of all system components. The system is able to forecast power generation, consumption and carbon costs for the upcoming 24 hours. These essential data points are used to define optimal charging and discharging cycles for the energy storage unit, assess the vehicle fleet storage capacity, while considering the minimum required power indicated by the charging service provider.


The application will feature a dashboard to enable energy managers to supervise the whole system and monitor financial and carbon savings through a set of performance indicators. An “Insights” section within the app will display key system parameters such as such local energy, self-consumption or saved costs in a personalised, single-page view. Users will also automatically be alerted by the app in case of abnormal system behavior, as determined per pre-defined rules, and receive a first analysis of the potential root cause.


“We are currently developing our own customized solution. The end result will be a smart energy management system that is tailored to our specific optimisation and reporting needs and hosted in our own secure environment. It will become a key tool to facilitate and improve the work of both our energy managers and maintenance personnel,” commented Peter Swart, Program manager Energy at city of Arnhem.

Written by: editors Smart City Hub
Header image: Leonard Kuipers

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