Third-party testing from TÜV Rheinland confirmed that Aptera Motors Corp.’s solar electric vehicle generated more than 4 kWh of usable solar energy daily across three test days in Southern California. The data provides a look at real-world vehicle-integrated photovoltaics (VIPV) under actual field conditions.
Vehicle solar has historically faced skepticism due to low panel tilt, shading, and limited surface area. However, the test results show how cell layouts and power electronics perform in the field. Testing logged energy delivered directly to the battery pack rather than estimating output at the module surface level.
Dr. Giorgio Bardizza of TÜV Rheinland conducted the on-site evaluation at Aptera’s Carlsbad facility. He used calibrated data logging equipment to track continuous generation from sunrise to sunset. Across three test setups, the vehicle’s 815.9 W peak photovoltaic system beat Aptera’s daily baseline target of 4.0 kWh.
A stationary test with the vehicle parked logged 4.23 kWh delivered to the battery. Turning the vehicle once at solar noon yielded 4.40 kWh. Opening the rear hatch toward the sun pushed delivery to 4.75 kWh. That translates to roughly 47 miles of daily range based on Aptera’s target efficiency rating of 100 Wh/mi.
The vehicle embeds 205 custom solar cells across seven distinct strings. These cells sit across four body zones: the hood, dashboard, roof, and rear hatch. Power logging across each string showed combined conversion losses between 9.2% and 9.6%. This indicates that sub-array efficiency remains steady under outdoor conditions.
As VIPV expands into commercial fleet and passenger markets, independent testing helps establish real performance metrics outside traditional solar arrays. Find the full test report here.
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