William Theisen

William Theisen, CEO, North America at EcoAct

William Theisen is the CEO of EcoAct North America. With 14 years of experience in sustainability, he leads a team of experts supporting Global and Fortune 500 companies to develop and implement net-zero strategies. This includes managing projects for the private sector at any stage of their sustainability journey, including assessing emissions both direct and throughout the supply chain, setting and creating roadmaps for science-based targets (short-term and net-zero), climate scenario analysis, and alignment with reporting frameworks and guidelines (CDP, TCFD, SASB). At EcoAct, we also develop carbon offsets projects (nature- and technology-based solutions) and support companies in procuring high-quality carbon offsets to achieve their carbon-neutral goals. 

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