MUCH of the Regio S-Bahn Donau-Iller network centred on Ulm in southern Germany is set to be electrified under plans revealed by the states of Bavaria and Baden-Württemberg on February 8.

The project will support the electrification of main routes on the largely diesel-operated network while new stations and passenger service enhancements are also expected.

A jointly-commissioned cost:benefit analysis has proven to be extremely positive, with the state transport ministers saying that “the economic benefits are expected to be significantly higher than the estimated costs.” As a result, both states expect funding for network improvements will be available from the federal government via the Municipal Transport Financing Act (GVFG).

Key projects in the Regio S-Bahn Donau-Iller network enhancement programme include:

  • electrification of the 72.5km Ulm - Aalen “Brenzbahn” line. GVFG funding is expected to cover around two-thirds of the €450m cost. Baden-Württemberg, where most of the line is located, has agreed to fund the remainder, including contributions that would normally have been due from Bavaria, where only around 8km is located.
  • electrification of the 85km Iller Valley line to Kempten, south east of Ulm. Bavaria signed a contract with German Rail (DB) for design and planning work on February 8. The state is providing €41m towards electrification of the entire line and track doubling on 11km. This comprises the northernmost part of the route between Neu-Ulm and Senden and a shorter section further south between Kellmünz and Pless to allow trains to pass and frequencies to be increased.
  • electrification of the Senden - Weissenhorn branch. This is owned by Ulm utility company SWU. A planning and financing agreement was signed between Bavaria and SWU Verkehr on February 8.

All electrification will take place at the German standard voltage of 15kV ac.

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