Mary Sennes advises developers, owners and sponsors in the acquisition, sale and financing of solar, battery energy storage, wind and biofuels facilities throughout the United States.  Practicing in the corporate group at Stoel Rives, Mary regularly counsels renewable energy clients in M&A transactions, tax equity structures and tax credit purchase and sale transactions. Mary also represents clients in a variety of industries on commercial transactions, corporate reorganizations, joint ventures, and M&A transactions.

Mary provides practical business advice, offering her clients experience gained at a global law firm and other U.S. law firms and as in-house counsel at a Fortune 10 company.

Mary’s pro bono activities include providing business advice to clients through LegalCORPS.


William Mitchell College of Law, J.D., 2004, magna cum laude

University of Notre Dame, B.A., 2000, cum laude




  • Representation of solar developer in the acquisition of a combined solar and battery energy storage facility in California.
  • Representation of renewable energy client in the acquisition and financing of an operating wind farm in Maine.
  • Representation of ENGIE in acquisition of projects with 6GW of solar and battery storage capacity.
  • Representation of sponsor in connection with the tax equity financing of multiple portfolios of solar projects located throughout the United States.
  • Representation of sponsor in connection with the tax equity financing of battery energy storage facilities in Texas.
  • Representation of sponsor in connection with the sale of tax credits for a portfolio of battery energy storage facilities.
  • Representation of Turtle Island Foods, SPC, dba Tofurky, owner of the plant-based Tofurky and Moocho brands that manufactures and markets products in the U.S., on its sale to Morinaga Nutritional Foods, Inc., a subsidiary of Tokyo-based food conglomerate Morinaga Milk Industry Co., Ltd.
  • Representation of U.S. producer-owned vertically integrated beef company in corporate matters.
  • Representation of biofuel technology companies in development activities and purchase and sales transactions throughout the U.S.


Insights & Presentations

  • “The Increasing Demand for Biofuel,” Women In Agribusiness Summit, September 2022
  • “Securities Regulation,” Chapter 15, The Law of Wind: A Guide to Business and Legal Issues, Stoel Rives LLP, Ninth Edition, 2022
  • “Securities Regulation,” Chapter 12, The Law of Solar: A Guide to Business and Legal Issues, Stoel Rives LLP, Sixth Edition, 2022



  • American Bar Association, Business Law Section, Member
  • Minnesota Asian Pacific American Bar Association (MNAPABA), Member and former Officer 
  • National Asian Pacific American Bar Association, Member


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