Student Team Breaks Conventional Design to Create 'Energy-Positive' Electric Vehicle
A team of graduate students at Clemson University in South Carolina, US, has recently achieved a major breakthrough by developing the world’s first solar electric vehicle prototype, Deep Orange 17, capable of achieving 'energy-positive' performance in urban commuting scenarios. Designed by 16 master’s students in automotive engineering, the prototype integrates 1,700 solar photovoltaic cells into its body. In a daily commute of 20 kilometers, it generates enough electricity to provide an additional 50 kilometers of driving range, fundamentally redefining the role of electric vehicles from energy consumers to energy producers.
The development of Deep Orange 17 is the 17th iteration of Clemson University’s Deep Orange program, which aims to cultivate students’ abilities to design and manufacture complete vehicles. This project received technical and resource support from German automaker BMW and the Fraunhofer Institute for Solar Energy Systems ISE, showcasing the innovative outcomes of industry-academia collaboration. The research team conducted simulations analyzing sunlight conditions and environmental factors in four cities—Greenville, South Carolina; Frankfurt, Germany; Madrid, Spain; and Mumbai, India—to validate the vehicle’s energy output performance under varying climatic conditions.
Lightweight Design and System Integration Set New Benchmarks for Energy Efficiency
The most significant technical highlight of Deep Orange 17 is its integrated solar power system. The 1,700 solar cells on the vehicle’s surface serve not only as an auxiliary power source but also as a core component of the entire powertrain. The research team maximized energy efficiency through several innovative technologies:
First, the vehicle employs a multi-material hybrid chassis design, combining high-strength steel, aluminum alloys, carbon fiber structural components, and 3D-printed metal joints. This ensures passenger safety while keeping the vehicle’s weight at just 550 kilograms, only a quarter of that of similarly sized production vehicles. Second, the vehicle is equipped with an advanced regenerative braking system, intelligent torque distribution technology, and an optimized drive control system, further enhancing energy recovery efficiency. Additionally, the team invested considerable effort in aerodynamic optimization, reducing driving resistance through a streamlined body design to maximize energy utilization.