Swiss Winduction tire-based inductive-charging electric buses: Zurich Airport pilot in 2028
Impact level
⚪ Background
What happened
ETH spin-off Winduction is developing a tire-based inductive-charging system: coils in ground panels transmit power to coils embedded in specially made tires, charging vehicles while they stop. Transfer efficiency exceeds 90%, and steel-belt-free tires are required. The founder says it could reduce onboard battery size and lower the lifecycle cost of bus routes. The company is conducting feasibility studies with operators; a test facility is under construction in Winterthur, and it plans to hold its first passenger-carrying pilot around Zurich Airport in 2028. [1]
Involves:Electric buses、Steel-belt-free, specially made tires、Ground-based inductive-charging panels
Seller impact
- InferenceThe system shifts charging to stops, which could theoretically allow smaller batteries and reduce peak grid loads from concentrated overnight charging. However, the savings depend on the route, and no figures have been published from the feasibility study. [1]
- FactSteel-belt-free tires and ground coils are new specialized components. The per-vehicle tire price is reportedly higher, but described as “almost negligible” relative to vehicle and operating costs. Suppliers, capacity, and certification timelines for the coils and tires have not been disclosed. [1]
Suggested action
Monitor future public information about the technology and tire and coil suppliers; no procurement action is needed for now.
Evidence that would disprove the assessment
- Assessment 1:If the feasibility study or operator disclosures show that lifecycle costs rise rather than fall, this assessment would no longer hold.
- Assessment 2:If later disclosures of specific tire costs or certification requirements show that this claim does not hold, it should be revised.