Our Team

Shoshannah is the inaugural executive director of the Ann Arbor Sustainable Energy Utility. She joined the City of Ann Arbor and its executive leadership team in August 2025, bringing 20 years of experience in utilities, business strategy and sustainability. She most recently led the Center for Sustainable Systems at the University of Michigan School for Environment and Sustainability (SEAS). At DTE Energy, she held leadership roles in corporate strategy, infrastructure renewal operations, and more – including serving as the incident commander for the DTE Gas pandemic emergency response. She also previously worked as a management consultant for the globally renowned Boston Consulting Group (BCG).

Shoshannah holds a bachelor's degree from Cornell University and a master's degree from the University of Michigan, where she studied sustainable systems and published research on transportation decarbonization policy. Before joining the city as an employee, Shoshannah served on the Ann Arbor Energy Commission, including a term as chairperson. Today, she is a proud trustee for the Ann Arbor Hands-On Museum and Leslie Science & Nature Center.

Shoshannah lives in Ann Arbor with her family, in an old home they have had the fun of electrifying (including putting in solar and geothermal energy!). She enjoys hiking, reading (mostly nonfiction) and watching live theatre and music.

Marisa joined the City of Ann Arbor in October 2026, bringing more than 20 years of experience in business strategy, operations leadership and leading complex, cross-functional initiatives across the energy, consulting and manufacturing sectors.

Prior to joining the city, Marisa held leadership roles in strategy and operations, including serving in a chief of staff position. In these roles, she led large-scale organizational transformations, business unit strategic planning and operational improvement efforts across electric and gas utilities. Her previous experience includes management consulting to advise organizations on complex strategic and operational challenges. Earlier in her career, she worked in business development, supply chain management in the automotive industry and data analytics at a software startup.

Marisa holds a bachelor’s degree in engineering from Michigan State University and an MBA from the University of Michigan Ross School of Business.

Originally from Ecuador, Marisa has strong ties to Ann Arbor, where she previously lived for 10 years. She is passionate about serving the community. Outside of work, she enjoys traveling, hiking, dancing, reading and spending time with her pets.

Tamanna began working with the A2SEU in the summer of 2026. She brings six years of experience in sustainability, climate and energy policy research, environmental compliance and communications to her role as an intern with the A2SEU. Her background includes greenhouse gas emissions accounting, environmental reporting, renewable energy and clean energy transition research and sustainability program evaluation. She has experience collaborating with government agencies, industry representatives and community stakeholders, as well as translating complex environmental and technical information into accessible public communications.

She earned master of science degrees in sustainable systems from the University of Michigan and in environmental management from the University of York and holds a bachelor of science in biotechnology from the University of Pune.

A resident of Ann Arbor, Tamanna's hobbies include baking, swimming and, recently, hand building ceramics.