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
Ryan Bottem
Energy Policy Analyst
Ryan joined PGP in December 2024 as an Energy Policy Analyst. His work at PGP is focused on resource adequacy and the energy transition. He is an alum of Western Washington University’s Institute for Energy Studies, earning his Bachelor of Science in Energy Science and Technology. He holds a Master of Science in Environmental Science degree from WWU’s College of the Environment. His research career began in Materials Science, assessing coal fly ash as a thermal medium in Concentrating Solar Power plants. As a research intern at Okanogan County Electric Cooperative, Ryan studied the implementation of rural energy efficiency programs under the Bonneville Power Administration and drafted a five-year plan of action. His thesis was an application of Life Cycle Assessment in the agriculture industry.
Phone: 253-293-2272