SWU Accelerates EV Transition with Major Investment in Electric Public Transport
Stadtwerke Ulm / Neu-Ulm (SWU) is ramping up its commitment to zero-emission transit with the purchase of 37 Mercedes-Benz eCitaro electric buses, solidifying its push toward full fleet electrification. The new acquisition includes 15 eCitaro solo buses and 22 articulated eCitaro G units, adding to the 14 articulated eCitaro G models already on the road. The buses will begin operations through 2026, with an option for nine more units in 2027.
Project Scope and Budget
- Contract Signed: July 18, 2025
- Supplier: Daimler Buses
- Number of New Buses: 37 confirmed (+9 optional)
- Total Projected Investment: €34.6 million (approx. $37.6 million USD)
- Deployment Timeline: Through end of 2026
- Optional Units: Additional nine units planned for 2027
This order stems from a Europe-wide competitive tender and reflects Daimler Buses’ growing presence in domestic urban transit markets. By the time all vehicles are delivered, more than half of SWU’s fleet will be battery-electric.
Bus Specifications and Passenger Capacity
Bus Type | Length | Doors | Capacity (Passengers) |
---|---|---|---|
eCitaro Solo | 12.14 meters | 3 | Up to 65 |
eCitaro G Articulated | 18.3 meters | 4 | Up to 143 |
All new buses are designed for improved accessibility with expanded space for wheelchairs, prams, and walking aids. The upgraded design helps SWU better serve a broader demographic.
Charging and Battery Technology
The buses use the fourth-generation NMC (Nickel-Manganese-Cobalt) batteries, known for high energy density and fast-charging compatibility.
Battery and Charging Highlights:
- Battery Pack Output: 111 kWh per pack
- Charging Power: Up to 300 kW
- Depot Charging Ports: On both sides above the front axle
- Pantograph Charging: Enabled via rooftop system
- Navigation Support: Roof camera assists with pantograph alignment
The dual-mode charging—depot-based and opportunity charging on route—is tailored to match the demanding terrain and route schedules of the Ulm and Neu-Ulm areas. The combination helps avoid mid-route downtime and maximizes operational uptime.