Volvo Buses has received an order for 12 of its Volvo 7900 Hybrids from Bergkvarabuss, a privately owned transit bus operator in Sweden, for the city of Karlskrona.
The hybrid electric buses, which consume almost 40% less fuel than a corresponding diesel bus and 40% to 50% lower exhaust emissions, will enter revenue service in Karlskrona in September.
The buses feature an electric motor, a battery pack and a small diesel engine, which meets the European Union's new Euro 6 emission standards. The batteries are charged by the energy produced whenever the vehicle brakes.
Volvo says sales of its hybrid electric buses have so far exceeded 1,350 units, with customers in 21 different countries.