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.
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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?
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.
The pv panels powers the heating, air con and lights.