The Esteban 10 two-seater racing car follows in the footsteps of the university’s single-seater, which won the Formula Sun Grand Prix circuit race in 2018 and 2019 and finished fourth in the American Solar Challenge 2018. OPES Solutions with its technology solar integrated into the vehicle is the main partner of the project.

300 kg of weight and 600 km of autonomy

With a total weight of 300 kg and an engine power of 10 kW, Esteban 10 achieves a range of 600 kilometers. The maximum speed is 115 km / h, the monocrystalline solar panel integrated in the vehicle achieves a total power of 1,250 watts and the integrated battery has a capacity of 9.2 kWh. To achieve the low weight, the solar modules are integrated directly into the vehicle body. The whole vehicle has a carbon fiber monocoque chassis.

“The Esteban 10 is a unique high-end handcrafted unit. Nevertheless, many of the principles and learnings applied in the construction of racing cars can be transferred to the mass production of photovoltaic solutions integrated into vehicles ”, says Robert Händel, CEO of OPES Solutions. In addition to a high energy density in order to make optimum use of the available surface, the module must be as light as possible.

Photovoltaic integrated in the vehicle with light solar modules

The custom solar panels that are used weigh a total of only 7 kg. OPES Solutions achieves this by reducing the encapsulating material to 0.2mm. The edge play is reduced from 4 mm to 2 mm.

“We have supported the Esteban team from the start, as we share the passion and dedication to change the mobility industry and explore the limits of what is technically possible,” says Händel. OPES Solutions already produces commercially available solar modules for integration into vehicles and helps manufacturers integrate solar technology into vehicle bodies.