Observed Minimum Illuminance Threshold for Night Market Vendors in Kenya who use LED Lamps Page: 1 of 10
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THE LUMINA PROJECT
http://light.lbl. gov
Research Note #3
Observed Minimum Illuminance Threshold for Night
Market Vendors in Kenya who use LED Lamps
Peter Johnstone*, Arne Jacobson*, Evan Mills* and Kristen Radecsky*
* Schatz Energy Research Center, Humboldt State University
* Lawrence Berkeley National Laboratory
March 21, 2009
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A woman who sells vegetables uses an LED lamp for illumination
Acknowledgments: This work was funded by the U.S. Department of Energy under
Contract No. DEAC02-05CH11231 through The Rosenfeld Fund of the Blum Center for
Developing Economies at UC Berkeley. Evan Mills and Arne Jacobson are the Principal
Investigators. We wish to extend special thanks to the many people and businesses in
Kenya who participated in this study. We are grateful to Maina Mumbi for his expert
contributions to the fieldwork, and to the entire Mumbi family for hosting our team in
Maai Mahiu. We also thank Mark Hankins, Gladys Sakaja, Samuel of Elsam Electronics,
Francis Ngugi, and Paul Mwaniki for their insights, assistance, and support. We are
grateful to Kyle Palmer and Scott Rommel of the Schatz Energy Research Center for
developing the custom data loggers used in the research. We thank Stewart Craine of
Barefoot Power for supplying key components for the LED lights. Note: Rights for the
photographs in this work are reserved by the Schatz Energy Research Center
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Johnstone, Peter; Jacobson, Arne; Mills, Evan & Radecsky, Kristen. Observed Minimum Illuminance Threshold for Night Market Vendors in Kenya who use LED Lamps, report, March 21, 2009; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc927915/m1/1/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.