We leverage our expertise and network of strategic partners to develop insights and tools that help identify gaps to solving the plastic pollution problem, prioritize strategies, set baselines and targets, and measure the success of solutions.


Our relationships from across industries and geographies allows us to form a unique viewpoint on the implementation of inclusive and effective solutions on the ground and to amplify what works so stakeholders can make better decisions about engaging in the sector.

Impact Metrics Working Group

To better understand the impact of solutions to address plastic leakage, The Circulate Initiative convened a diverse group of subject matter experts in an Impact Metrics Working Group that can identify and address key gaps in data, metrics and methods.

Members include the world’s foremost experts on waste management and ocean health, investors, NGOs, researchers, and advocacy organizations.

With the Impact Metrics Working Group, The Circulate Initiative developed its first research agenda to provide analysis and interpretation of emerging topics and help stakeholders navigate toward the most effective solutions. The Impact Metrics Working Group provides input and guidance into key reports and resources being explored by The Circulate Initiative.



  • Adam Wolfensohn, Managing Partner, Encourage Capital

  • Alix Grabowski, Manager, Packaging and Materials Science, WWF

  • Chever Voltmer, Director of Plastics Initiatives, Ocean Conservancy

  • Courtney Thompson, Vice President, Morgan Stanley

  • Cynthia Shih, Director of Knowledge,

  • Deborah Robertson, Environmental Specialist, Asian Development Bank

  • Ellie Moss, Senior Advisor, Encourage Capital

  • Erin Murphy, PhD candidate, Arizona State University

  • Grant Collins, Strategic Advisor, Circulate Capital

  • James Baker, Solid Waste Management and Circular Economy Specialist · Asian Development Bank (ADB)

  • Jenna Jambeck, Georgia Athletic Association Professor in Environmental Engineering, University of Georgia

  • Joao Sousa, Senior Programme Officer, Global Marine and Polar Programme, IUCN

  • Karina Cady, Operations and Investment Director, Circulate Capital

  • Maeve Nightingale, Senior Programme Officer, Coastal and Marine Programme, IUCN Asia

  • Nick Kolesch, Vice-President, Projects, Alliance to End Plastic Waste

  • Rob Kaplan, Founder & CEO, Circulate Capital

  • Sabine Strnad, Knowledge Management & Data, Alliance to End Plastic Waste

  • Set Oya, Monitoring, Evaluation, and Learning Manager, USAID Clean Cities Blue Ocean

  • Simon Baldwin, Director, SecondMuse Singapore

  • Sonia Dias, Waste Specialist, WIEGO

  • Stuart Gill, Global Head of Impact, SecondMuse

  • Taylor Cass Talbott, Reducing Waste in Coastal Cities Project Officer, WIEGO



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A Sea of Plastics Claims and Credits: Steering Stakeholders Towards Impact

As more companies and governments make commitments to address plastic pollution, several plastic offset claims and credit schemes have emerged.


We reviewed the current landscape of standards, certifications and credit programs to assess the strengths and weaknesses of current programs and whether they are equipped to help buyers meet their impact objectives.

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Measuring Our Success: How Better Data Can Help Keep Plastic Out of the Ocean

We reviewed the existing landscape for ocean plastic metrics and tools in collaboration with a multisectoral group of experts to identify key trends and gaps in data and methods as well as opportunities to continue advance the field. We welcome partners to join us in this effort.

View the resources reviewed as part of this analysis in our Knowledge Bank for a more in-depth look at existing research, resources and tools focused on solutions to address ocean plastics and measures of impact.


The Circulate Initiative, together with Circulate Capital and Singapore's Agency for Science, Technology and Research (A*STAR), has developed an open-sourced prototype greenhouse gas calculator to track the environmental impact of plastic waste management and recycling solutions that prevent plastic pollution in India and Indonesia.

PLACES - Plastic Lifecycle Assessment Calculator for the Environment and Society - measures the environmental benefits of an investment through carbon footprint, and energy and water consumption.

The TCI Knowledge Bank

The Circulate Initiative's Knowledge Bank encompasses research, resources and tools focused on solutions to address ocean plastics and measures of impact.


With this set of resources, we aim to inform the overall discussion on ocean plastic by ensuring the global and public narrative on ocean plastic is informed by science and practice and focuses on tangible solutions, including the importance of circular waste management and recycling.

Image by Matthew Hume