Sono Motors Sion solar production is underwhelming

Sono Motors Sion is an unique electric concept car that is covered by “more than 248 solar cells”. According to the advertised specs, at peak performance, all these solar cells should be able to provide up to 1,2 kW.


However, in the real world we shouldn’t expect the solar production peak to be much higher than 400 W, even on a sunny day.


Sono Motors Sion solar production is underwhelming


As expected, the large solar panel on the roof produces more electricity alone than all the other four combined.

I think that in electric cars, solar panels only make sense when placed on the top. Solar panels surrounding the vehicle only add complexity and costs without giving much in return.

Moreover, we don’t know yet if the solar panels on the sides compromise crash tests.


Nonetheless, the Sono Motors Sion has nice specs.



  • Price: 25.500 euros
  • Battery: 35 kWh
  • Drivetrain: 120 kW Motor
  • Torque: 270 Nm
  • Max. speed: 140 km/h
  • Charging: CCS: 30 Min. - Type 2: 3,5 h - Schuko: 13 h
  • Range: 255 km according to WLTP standard
  • Solar range: up to 245 km/week
  • Trunk volume: 650 L
  • Tow bar: 750 kg


You can even use the Sion to charge other electric cars, which is pretty awesome.


Anyway, in my opinion, one electric concept car that implemented solar panels correctly was the Pininfarina B0. It’s a shame that an electric car like this never made into mass production. The Bollor√© Bluecar that went into production was basically an uglier 3-door version and without solar panels.


Pininfarina B0


In some situations, a good 300 W solar panel roof in an electric car could add around 2 kWh to the battery per day and would be enough to drive an extra 10-15 km.

Situations like you go to work and leave your electric car parked for 10 hours near the train station.


Fortunately, the Hyundai IONIQ 5 has a solar panel roof and if the concept proves its value, more automakers will be tempted to introduce solar panels in their electric cars. The upcoming all-electric SUV Toyota bZ4X will also feature a solar roof.


Hyundai IONIQ 5


Unfortunately, the Hyundai IONIQ 5 is a very expensive electric car. An electric car similar to the Pininfarina B0 with starting price of 20.000 euros featuring a 300 W solar roof, a 50 kWh LFP (LiFePO4) battery and 100 kW fast charging capability would be perfect for many people. Don’t you agree?


Finally, here is the latest video by Sono Motors demonstrating the solar integration in the Sion.



What do you think? Should electric cars get solar panel roofs? If optional, how much would you be willing to pay for a 300 W solar panel roof in an electric car?

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