Sono Motors equips first bus with PV retrofit solution
From pv magazine Germany
German vehicle-integrated PV (VIPV) specialist Sono Motors has shifted its focus to photovoltaic solutions for vehicles, following the discontinuation of its Sion solar EV project in February.
The Munich-based company has initiated a pilot project in Hof, Bavaria, to equip a bus operated by Stadtwerke Hof with a revised version of the “Solar Bus Kit” – Sono Motors’ PV retrofit solution for buses.
Sono Motors offers 16 semi-flexible solar modules, totaling 1.4 kW in output, for the bus roof. This lightweight setup, weighing just 50 kg, directs solar energy to the battery supporting the bus’s diesel engine.
The solar-equipped bus has gained road approval from the TÜV and is active in Hof. Meanwhile, an equivalent mid-hybrid bus, lacking the photovoltaic kit, serves as a performance and energy consumption benchmark on selected routes.
“We are very excited about the results of the pilot project,” explained Stadtwerke Managing Director Jean Petrahn.
The project serves as a stepping stone towards the gradual conversion of the fleet in the coming years.
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What is the point of doing this ona diesel powered bus?
The pv panels powers the heating, air con and lights.
1. The battery allows energy to be stored from braking. Buses stop a lot.
2. That and the electric motor allow the diesel to burn less fuel or add to its push or allow it to be smaller when starting up again. Buses start up a lot.
3. Trickling electricity in from the roof makes this work even better, saving diesel.
4. If the bus is air-conditioned, cooled, or filtered, that may be electric.