The information has been published by the Region of Hannover, Lower Saxony's regional transport authority, and Westphalia-Lippe Local Transport (NVR).
The concession accounts for about 9.1 million train-km per annum and concerns the following S-Bahn lines:
- S1: Haste - Weetzen - Hannover - Wunstorf - Haste - Stadthagen - Minden
- S2: Haste - Weetzen - Hannover - Wunstorf - Neustadt am Rübenberge - Minden
- S3: Hildesheim - Sehnde - Lehrte - Hannover
- S4: Hildesheim - Sarstedt - Hannover - Langenhagen - Bennemühlen
- S5: Paderborn - Hameln - Weetzen - Hannover - Langenhagen - Hannover Airport
- S6: Celle - Burgdorf - Lehrter curve - Hannover
- S7: Celle - Burgdorf - Lehrte - Hannover
- S21: Barsinghausen - Weetzen – Hannover, and
- S51 Hameln - Springe - Hannover - Seelze.
Bids for this open competition must be submitted before August 1 2016. The concession will last for between 10 and 15 years, and the new operator will take over in two stages: December 2020 and December 2022.