Our Team
Mary Wiencke
Executive Director
Mary joined PGP in 2022. Prior to joining PGP, Mary was the Vice President of Market, Regulation, and Transmission Policy for PacifiCorp where she developed and provided strategic direction on PacifiCorp’s environmental, transmission and market policies. Ms. Wiencke held various roles at PacifiCorp including Senior Attorney and Director, Environmental Policy at PacifiCorp. Ms. Wiencke is a graduate of Barnard College and Lewis & Clark Law School.
Phone: 971-288-9999
Nikkole Hughes
Regulatory Policy Analyst
Nikkole Hughes joined PGP in November 2021. Her work at PGP is focused on clean energy and carbon policy. Prior to joining PGP, Nikkole spent 7 years as non-partisan staff to the Washington State House of Representatives, where she served as lead House staffer for both the Washington Clean Energy Transformation Act (CETA) and the Climate Commitment Act (CCA). She holds a Master of Public Administration degree from The Evergreen State College and a Bachelor of Science degree in Natural Resource Sciences from Washington State University.
Phone: 360-583-6121
Sibyl Geiselman
Market Policy Advisor
Sibyl joined PGP in July of 2022. Her work at PGP is focused on market design and strategy. Prior to joining PGP, Sibyl focused on production cost modeling, market analysis, and market strategy in organized and bilateral markets at Avangrid Renewables and Enel North America. Sibyl started her career in public power as an Energy Resource Analyst at the Eugene Water and Electric Board. She graduated from the Clark Honor’s College at the University of Oregon and has a bachelor’s degree in Applied Mathematics and Spanish.
Phone 503-730-1046