Solar-powered cars require surface area for the panels, and designers have come up with different solutions for this. Clean energy company GoSun envisions a roofrack-mounted unit that unfurls its panels when the vehicle's parked.
Engineer Omid Sadeghpour built a similar system for his Tesla Model Y, using telescoping carbon fiber tubes.
Worksport, an American manufacturer of tonneau covers, has proposed this Solis Solar Tonneau Cover.
Now Italian industrial designer Danilo Petta and Turkish architect Öznur Pinar Cer propose a solution for motorcycles. Petta and Cer's firm, Mask Architects, has released images of this Solaris concept, an electric motorcycle intended to be charged exclusively by solar.
Tucked beneath the tail...
...are two deployable solar panel wings.



This being an architecture firm, the concept is extremely light on details—how exactly do those wings unfurl?—and heavy on social-good theory:
"SOLARIS® is more than a vehicle—it is an environmental intervention. Operating exclusively on solar power, it eliminates CO2 emissions, reduces noise pollution and demonstrates a decentralized model of clean mobility. By removing the need for fuel or charging stations, SOLARIS® brings renewable transportation to remote regions, developing communities, protected natural areas and countries with fragile infrastructure. It becomes a catalyst for social, economic and ecological transformation, enabling mobility where it has never been accessible before."


It's an interesting concept, but without the intervention of a Honda or a Yamaha, will likely remain just that.
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Comments
A concept that requires a LOT more work.
I don't see enough panel area to make this the primary power source for more then a handful of kms per day.
The underside of the tail section is not a good storage location for delicate solar panels. Even with the small rear mud guard, a lot of water and debris is flung up from the rear wheel.
It looks like a small breeze would act like a sail and blow over the parked bike.
Agreed. Though I would love to see some examples of people motorcycle trekking with folding solar panels on a trailer or something that they unroll on the ground while camping or something. I've seen it done on bicycles and even there it's hard to get a meaningful amount of energy!
That would be very interesting to see but I do not see any concessions made for attaching any trekking gear. Also, adding the weight of gear would farther reduce range. This would be more of a campsite runabout then a primary transportation solution.