The 2025 Eskom Expo International Science Fair (ISF) concluded at Emperors Palace Convention Centre in Kempton Park, celebrating young innovators who demonstrated scientific excellence and creativity. The event, held from 6 to 10 October 2025, brought together top young scientists from South Africa, Lesotho, Namibia, Zimbabwe, Ireland, India, and Russia.
Among the standout winners was Christopher May, a Grade 12 learner from Otto du Plessis High School in Port Elizabeth, who won the Top Senior Scientist award and a R100,000 cash prize. His project, “Differential Geometric Modelling of Sound Signals and Ultrasound Imaging,” impressed judges with its advanced mathematical approach to improving medical imaging. May’s work uses differential geometry to enhance ultrasound images, boosting diagnostic precision in healthcare.
The Top Junior Scientist award went to Khushi Lall from Tyger Valley College, Northern Gauteng. Her project, “Garlic: Nature’s Secret to Food Preservation,” earned her R75,000 for exploring garlic’s antimicrobial properties to combat resistant microbes threatening global food security.
Another notable winner, Lethabo Kgwete from Moleshatlou Secondary School in Limpopo, received R75,000 for the Top Development School project, “The Effect of Livestock Green Compost Tea.” Kgwete’s eco-friendly fertiliser made from fruit peels, dry grass, and wood ash demonstrated potential for improving rural crop yields through sustainable agriculture.
Official Response
Eskom Development Foundation Acting CEO Mologadi Motshele praised the learners for their innovation and dedication, saying:
“Eskom is incredibly proud of the young scientists who have participated in the Eskom Expo this year, gaining valuable knowledge, skills, and insights as they explore science, technology, engineering, mathematics, and innovation (STEMI).”
Motshele added that the initiative has opened doors for thousands of learners nationwide:
“By taking part, they become the architects of a brighter and more prosperous South Africa for future generations.”
Eskom Expo Executive Director Parthy Chetty also commended the winners:
“This achievement is not only a celebration of scientific excellence but a reminder of what’s possible when curiosity meets opportunity. STEM subjects open doors to solving global challenges, shaping the future, and making a lasting impact.”
Community Impact
Beyond individual recognition, the Eskom Expo continues to strengthen South Africa’s future skills base. Over 30 Gold, 77 Silver, and 131 Bronze medals were awarded, alongside opportunities for top learners to represent the country at upcoming international science fairs in Taiwan, Tunisia, China, Indonesia, the USA, and Türkiye.
For many participants, especially those from rural or under-resourced schools, the experience was transformative — offering access to mentors, laboratories, and global exposure. Their research projects highlight how innovation at school level can address real-world issues like food security, environmental sustainability, and healthcare advancement.
As Eskom’s partnership with the science community grows, the Expo stands as a crucial platform nurturing South Africa’s next generation of inventors and problem-solvers.
