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Third Party Projects


NOX reduction through the establishment of an efficient low-cost charging infrastructure in Dortmund, Schwerte and Iserlohn

The NOX-Block project aims to establish a substantial number of charging points in public, semi-public and private spaces in the three municipalities of Dortmund, Schwerte and Iserlohn. To this end, the cities are working in cooperation with the ie³ with the respective local utilities and technology provider to set up a full-coverage low-cost charging infrastructure in conjunction with mobile metering. In public spaces, the focus will be on integrating the charging infrastructure into street lighting.

In the course of the long-term efforts to realise a CO2-neutral energy supply based on renewable energies (RE), the tasks for the distribution networks are changing. While the tasks of rural grids are changing, especially due to the addition of photovoltaic and wind energy plants, the electrification of the transport sector in combination with new, power-intensive consumers for heat generation represents an enormous challenge for urban distribution grids.

Due to the capacity limits of individual equipment in the network, especially cables and transformers, only a limited proportion of the total available capacity can be allocated to a charging station. In addition, at peak times, i.e. when many electric vehicles (EVs) are charging simultaneously on the same grid, several areas of the grid can be overloaded. This change in power flows already creates load situations for which the electrical distribution networks were not designed.

The integration of the EVs into the distribution networks can result in considerable costs for the network expansion without a reasonable control. A charging concept that is as intelligent as possible is decisive for the comfort of the vehicle user and is therefore a decisive aspect for the success of electromobility. Therefore, a coordinated local interaction of vehicle, charging station and network is necessary for a reliable and optimal charging process.

In the foreseeable future, electric vehicles will replace conventional vehicles and charge them primarily in private and semi-public areas, whereby they will require 20% of the energy produced in future. The simultaneous power peaks of charging EVs occurring in this future scenario can overload the customer's system or even the local network. To protect the infrastructure, it is therefore necessary to control the power peaks. With intelligent charge control, the distribution network can be better utilised and expansion on the customer installation side as well as in the local network can be limited. A load management system can lead to a reduction of the simultaneity factor, which reduces the demands on the load capacity of the installation. Especially in buildings with several users, e.g. the basement of a multi-family house or a depot, a local load management system must be installed to avoid an expensive oversizing of the grid connection and the in-house electrical installation.

Such a load management system will be developed and installed within the framework of this project. On the basis of model-based grid simulations, different control concepts for intelligent grid management of the charging infrastructure will be developed.

Project Duration: 08.2018 – 09.2022

Project Partners:

  • Stadt Dortmund, DEW21
  • Stadt Schwerte, Stadtwerke Schwerte
  • Stadt Iserlohn
  • Heimatversorger Stadtwerke Iserlohn
  •  TU Dortmund, ie³ - Institut für Energiesysteme, Energieeffizienz und Energiewirtschaft
  • BU Wuppertal


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Location & approach

The campus of TU Dort­mund University is located close to interstate junction Dort­mund West, where the Sauerlandlinie A 45 (Frankfurt-Dort­mund) crosses the Ruhrschnellweg B 1 / A 40. The best interstate exit to take from A 45 is "Dort­mund-Eichlinghofen" (closer to Campus Süd), and from B 1 / A 40 "Dort­mund-Dorstfeld" (closer to Campus Nord). Signs for the uni­ver­si­ty are located at both exits. Also, there is a new exit before you pass over the B 1-bridge leading into Dort­mund.

To get from Campus Nord to Campus Süd by car, there is the connection via Vogelpothsweg/Baroper Straße. We recommend you leave your car on one of the parking lots at Campus Nord and use the H-Bahn (suspended monorail system), which conveniently connects the two campuses.

TU Dort­mund University has its own train station ("Dort­mund Uni­ver­si­tät"). From there, suburban trains (S-Bahn) leave for Dort­mund main station ("Dort­mund Hauptbahnhof") and Düsseldorf main station via the "Düsseldorf Airport Train Station" (take S-Bahn number 1, which leaves every 20 or 30 minutes). The uni­ver­si­ty is easily reached from Bochum, Essen, Mülheim an der Ruhr and Duisburg.

You can also take the bus or subway train from Dort­mund city to the uni­ver­si­ty: From Dort­mund main station, you can take any train bound for the Station "Stadtgarten", usually lines U41, U45, U 47 and U49. At "Stadtgarten" you switch trains and get on line U42 towards "Hombruch". Look out for the Station "An der Palmweide". From the bus stop just across the road, busses bound for TU Dort­mund University leave every ten minutes (445, 447 and 462). Another option is to take the subway routes U41, U45, U47 and U49 from Dort­mund main station to the stop "Dort­mund Kampstraße". From there, take U43 or U44 to the stop "Dort­mund Wittener Straße". Switch to bus line 447 and get off at "Dort­mund Uni­ver­si­tät S".

The AirportExpress is a fast and convenient means of transport from Dort­mund Airport (DTM) to Dort­mund Central Station, taking you there in little more than 20 minutes. From Dort­mund Central Station, you can continue to the uni­ver­si­ty campus by interurban railway (S-Bahn). A larger range of in­ter­na­tio­nal flight connections is offered at Düsseldorf Airport (DUS), which is about 60 kilometres away and can be directly reached by S-Bahn from the uni­ver­si­ty station.

The H-Bahn is one of the hallmarks of TU Dort­mund University. There are two stations on Campus Nord. One ("Dort­mund Uni­ver­si­tät S") is directly located at the suburban train stop, which connects the uni­ver­si­ty directly with the city of Dort­mund and the rest of the Ruhr Area. Also from this station, there are connections to the "Technologiepark" and (via Campus Süd) Eichlinghofen. The other station is located at the dining hall at Campus Nord and offers a direct connection to Campus Süd every five minutes.

The facilities of TU Dort­mund University are spread over two campuses, the larger Campus North and the smaller Campus South. Additionally, some areas of the uni­ver­si­ty are located in the adjacent "Technologiepark".

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