John Mennel

John Mennel is a strategy partner, managing director, and leader in the ESG and sustainability strategy practice of Monitor Deloitte, the strategy-consulting subsidiary of Deloitte Consulting. He also leads the sustainability hybrid business team, which is developing technology- and analytics-enabled businesses to help companies and investors set and implement decarbonization plans, commercialize abatements, and understand climate-related risks. Mennel has led the responsible enterprise strategy for Deloitte’s CEO, including defining the company’s net-zero goal. With a background in international public sector and international development, he was previously a senior associate at Booz Allen Hamilton and a marketing executive for mobile data startups in Austin and Silicon Valley, among other roles. Mennel started his career as a manager with Deloitte & Touche, working in Russia and Kazakhstan.