Aic23 Mennel John

John Mennel

Managing Director and Purpose Strategy Leader, Monitor Deloitte

John Mennel is a managing director and purpose strategy 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, developing technology- and analytics-enabled businesses to help companies and investors implement decarbonization plans and understand climate-related risks. Mennel has been focused on sustainability, ESG, and purpose for over a decade, along with related work on growth strategy and innovation; he led the responsible-enterprise strategy for Deloitte’s CEO, including defining the company’s net-zero goal. Previously, he was a senior associate at Booz Allen Hamilton and a marketing executive for mobile data start-ups, among other roles. Mennel started his career as a manager with Deloitte & Touche, working in Russia and Kazakhstan. (Deloitte is a 2023 Festival Underwriter)

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