NeMoLand "New Mobility in Rural Areas: applied emobility - technological concepts - mobility impacts"

Duration: 10.2011 - 04.2014
Sponsor: Federal Ministry for Transport, Building and Urban Development

Project partners

  • Fraunhofer IFAM, Bremen
  • DFKI GmbH Robotics Innovation Center, Bremen
  • T-Systems, Bremen
  • AGT Germany, Berlin
  • H2O e-mobile GmbH, Varel
  • CRIE -Centre for Regional and Innovation Economics, Bremen
  • Institut für integrierte Produktenwicklung (BIK), Bremen
  • Jacobs University Bremen gGmbH, Bremen
  • OFFIS e.V., Oldenburg

The problem of excess electricity production from renewable energies, which is reinforced by the plans to expand the offshore wind capacities in Germany, is particularly debated for transmission networks. However, in rural areas of the metropolitan region Bremen/Oldenburg, photovoltaic generation capacities are rapidly growing – a trend which can be expected to continue. Furthermore, repowering is expected to aggravate problems from onshore wind, that are already today present in distribution networks. Hence, the discussion on network congestion from fluctuating renewable generation is shifting to distribution networks. The question is how the metropolitan region can integrate further renewable capacity and how local congestion in the network can be identified. In this context, the BEI, in cooperation with the OFFIS and the CRIE, investigates whether emobility can serve as a storage in the field of load management or whether targeted control of charging processes can avoid local network congestion. More specifically the BEI will focus on three tasks.

The BEI will prepare a GIS database of the selected district. The database will cover the current status and geographical distribution of photovoltaic and other renewable generation in medium and low voltage networks and the time varying feed-in. Based on this analysis the BEI will develop different scenarios for the expansion of renewable generation in the investigated region. The database is an input for a simulation model of the project partner OFFIS. The results from the simulations in turn are input for the second work package of the BEI.

As a second step the BEI will evaluate potential of using more electric vehicle fleets in the rural district from an energy economical point of view. The following key questions are posed:

  • Can emobility fleets be integrated into load management and offer negative balancing power when feed in from solar and wind generation is high, thereby avoiding network expansion in distribution networks?
  • Can the integration of electric vehicles in the distribution network enhance the share of renewable generation feeding into the distribution network and to which degree does this avoid CO2-emission from conventional generation?
  • To which degree can emobility reduce or avoid network investment cost in the low voltage networks?
  • Can the utilization of electric vehicles enhance the self-consumption of the owners of renewable generation installation, in particular PV?

The third task of the BEI addresses the economic perspective. In addition to estimating the potential of emobility for enhancing efficiency in distribution networks and improving the integration of decentralized renewable generation the BEI will investigate innovative tariff and pricing schemes.

Such schemes set economic incentives for charging and discharging of vehicles and thereby determine the realization of the technical potential. For efficient steering of fleet charging to improve the integration of further renewable generation, locationally differentiated tariff schemes by the network operator will play the biggest role in the study.

Contact persons

Bremer Energie Institut
Marius Buchmann M.A.
College Ring 2 (Research V)
28759 Bremen
Tel.: 0421/200-4872

Bremer Energie Institut
Dr. rer. pol. Jürgen Gabriel
College Ring 2 (Research V)
28759 Bremen
Tel.: 0421/200-4882