Swedish Study Shows How Electricity Pricing Shapes EV Bus Operating Costs
Researchers analyzing electric bus charging in Sweden found that modest shifts in when buses charge can cut electricity costs significantly—but only if pricing structures reward such flexibility. The finding matters because most transit agencies pursuing electrification haven't optimized for this lever, and tariff rules vary wildly between neighboring grid operators, creating hidden inefficiencies.
Originaltitel: Price Signals and Load Flexibility in Public Transport: A Cost Analysis of Electric Bus Charging
This paper examines how electricity pricing structures influence the cost of flexible electricity demand in Sweden. Using an electric bus fleet operating within the Skövde municipal area as a case study, three charging scenarios are evaluated across the tariff structures of seven distribution system operators (DSOs). Wholesale electricity prices generally contribute more to electricity costs than grid fees; within grid tariffs, peak-related components dominate. Modest temporal load adjustments can yield measurable end-user cost savings, while grid-optimized charging may be penalized. Significant differences in tariff structures across adjacent DSO areas suggest the potential for spatial, as well as temporal, load flexibility.