Mercedes-Benz’s research division is testing a new type of solar paint for its electric vehicles that could generate electricity for up to 12,000 kilometers per year. The technology involves applying photovoltaic-active surfaces to vehicle bodywork.
The solar modules measure 5 micrometers in thickness – thinner than a human hair – and weigh 50 grams per square meter. With 20% efficiency, these solar cells could generate significant power when applied to an 11-square-meter surface area (equivalent to a mid-size SUV). The system operates continuously, even when the vehicle is off, with energy either powering the vehicle or storing in the high-voltage battery.
Location plays a key role in the technology’s effectiveness. In Stuttgart, where drivers average 52 kilometers daily, the solar paint could cover 62% of driving needs. In Los Angeles, drivers could potentially cover 100% of their daily driving distance, with excess power available for home grid feeding through bidirectional charging.
The solar paint is made without rare earth elements or silicon, using non-toxic and readily available materials. It’s recyclable and costs less to produce than conventional solar modules.
Mercedes-Benz researchers are currently working on making this solar paint applicable to all exterior vehicle surfaces, regardless of their shape or angle.
