At the beginning of the new semester at Sichuan Vocational College of Science and Technology in Unity Town, Gifu County, a sophomore student named Zhang Qiang has become a real star among his peers. His name is often mentioned in conversations around campus, not because of any celebrity status, but due to his impressive hands-on project — a homemade photovoltaic power station.
Zhang Qiang, a 20-year-old student majoring in New Energy Engineering, comes from a modest rural family in Ningnan County, Xichang City. In 2011, he was admitted into the Department of New Energy at the college. During his studies, he developed a strong interest in solar energy technology and its practical applications.
Last August, after more than a year of academic training, Zhang Qiang took it upon himself to build a small-scale photovoltaic power system on his home roof. Using solar panels, batteries, and other components, he created a system that generates electricity for his household appliances.
A photovoltaic power station typically consists of solar cell arrays, battery packs, charge controllers, inverters, and distribution cabinets. The process is complex, but with solid knowledge from his studies, Zhang Qiang managed to complete the entire installation in just three days. Despite the short time, the system works efficiently and meets most of his daily power needs.
The total power output of the system is 330 watts, which can supply electricity for basic household use, except for high-power devices. According to Zhang Qiang, this system runs entirely on solar energy, reducing his daily electricity consumption by about two degrees. Compared to traditional power sources like hydropower or thermal power, it's cheaper, eco-friendly, and energy-efficient.
What makes Zhang Qiang’s project even more impressive is that he used recycled materials collected during his internships or discarded parts from photovoltaic production. The entire system cost only around 1,000 yuan, making it an affordable and sustainable solution.
Professor Zeng Xinyi, a renowned expert in new energy technology at the college, praised Zhang Qiang’s work. “It's not easy to make solar modules by hand,†said Professor Zeng. “In factories, this process involves 11 steps and requires over 100 million yuan in equipment investment.â€
According to Professor Zeng, Zhang Qiang’s system could be sold for around 30,000 yuan on the market and has a lifespan of 20–25 years. He believes the project has significant potential for promotion and commercialization.
Zhang Qiang’s story shows how passion, creativity, and practical skills can turn waste into value. His homemade solar power station is not only a personal achievement but also a promising model for sustainable living.
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