Bioluminescent Streetlights LumiGrow Piloted in Singapore: Zero-Energy Night Lighting from Engineered Microbes
National University of Singapore and Singapores HDB complete pilot installation of LumiGrow bioluminescent streetlights in Bishan, using genetically engineered luminescent bacteria in transparent tubes for completely electricity-free nighttime illumination.
The National University of Singapore bioengineering department and Singapores Housing Development Board today completed installation of the first 50 LumiGrow bioluminescent streetlights in the Bishan neighborhood. Each LumiGrow streetlight features a 2-meter transparent acrylic tube filled with genetically engineered bioluminescent bacteria suspension that continuously emits soft blue-green light through normal metabolism, requiring zero external electricity.
LumiGrow uses engineered Vibrio fischeri bacteria with enhanced bioluminescent gene cluster expression producing approximately 200x greater luminous intensity. Each streetlight produces about 80 lumens, illuminating approximately 15 meters of walkway. Project lead Professor Lim Wee Ming said maintenance costs are minimal, with bacteria suspension replacement every 6 months at approximately 50 Singapore dollars per replacement. Compared to traditional LED streetlights, LumiGrows total lifecycle cost is approximately 70% lower. However, current brightness is insufficient for main road illumination, making it more suitable for park paths and community walkways.
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