Leonard “Lenny” Singh
Chairman and President, Ameren Illinois

Leonard “Lenny” Singh is chairman and president of Ameren Illinois, 
where he is responsible for energy delivery to more than 1.2 million 
electric and more than 800,000 natural gas customers in 1,200 
communities across 43,700 square miles of service territory. Prior to 
joining Ameren Illinois in July of 2022, Lenny held a variety of senior 
leadership roles across electric, natural gas and steam operations, 
and customer solutions in a 30-year career with Consolidated Edison 
Company of New York. 
	
Lenny is leading Ameren Illinois through the clean energy transition, 
spearheading initiatives to facilitate the adoption and development 
of local, renewable energy generation and promoting the long-term growth of 
cleaner energy. He is leading the effort to build a resilient and reliable grid capable 
of supporting the increased electrification of the downstate Illinois economy with 
a focus on equitable justice and economic development. At the same time, he is 
championing policies that will fortify the state’s natural gas infrastructure while 
preparing for the sector’s transition to renewable natural gas and emerging clean 
hydrogen technologies, critical enablers of the energy transformation process. 
	
He holds a bachelor’s degree in electrical engineering from Massachusetts 
Institute of Technology, a master’s degree in electrical engineering from Polytechnic 
University, and a Master of Business Administration degree from Columbia 
University. He completed professional certificate programs on electric and natural 
gas distribution at the Siemens Power Technologies International Distribution 
Engineering and Gas Technology Institute, and on nuclear reactor technology at 
Massachusetts Institute of Technology. He has also completed executive education 
programs at Harvard, Georgetown, Cornell University ILR School, Dale Carnegie, 
American Management Association, and the University of Wisconsin-Madison.
GROWING TOGETHER
ILLINOIS’ ECONOMIC FUTURE
	
SEPTEMBER 2025  13 

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