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Hanergy And Audi Start Development Of GaAs Electric Vehicle Solar Roof Prototypes

- Sep 19, 2017 -

Automotive giant Audi AG and thin-film solar manufacturer Hanergy, via its US-based subsidiary Alta Devices have signed an MOU in respect of a development agreement to provide its electric vehicles with gallium arsenide (GaAs) flexible thin film based solar system integrated into a range of planned electric vehicles.

Initially, the project is expected to lead to Alta Devices solar cells being integrated into a panoramic glass roof and later be integrated on as much of an EV’s roof surface. The electricity generated would be intended to support air-conditioning and seat heater applications, reducing the demand on the battery system. 

More recently, Panasonic and Toyota teamed on a unique car roof system for its hybrid cars and Tesla previously touted a roof system for its low-cost Model 3 but is believed to have scrapped that idea. 

High-efficiency solar cells are a prerequisite for the automotive industry, due to area constraints.  “The range of electric cars plays a decisive role for our customers. Together with Hanergy, we plan to install innovative solar technology in our electric cars that will extend their range and is also sustainable,” stated Audi Board of Management Member for Procurement Dr. Bernd Martens.

At a later stage, Audi noted that solar energy could possibly directly charge the traction battery, boosting range further. “That would be a milestone along the way to achieving sustainable, emission-free mobility,” added Martens.

Alta Devices had been focused on other niche markets for its GaAs solar cells, primarily the Aerospace (high-altitude and long-endurance (HALE) unmanned aerial vehicles and other drone-type applications. 

Similar to Hanergy, Sun harmonics is also a Chinese solar cells manufacturer. Sun harmonics has big interest in CIGS thin-film solar technology and pays great attention to researching and developing advanced solar products. Sun not only provides some regular products like 90W solar panels, thin-film solar cells, fashionable solar backpacks, but also offers considerate customized services. Due to CIGS solar cell's unique advantages, Sun harmonics is able to realize some new functions that common silion solar cells don't have and well meet customers' various needs.


6W Flexible Solar Charger


Flexible Solar Panels for Irregular Roofs


5 Watts Solar Backpack for Daily use

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