Oil Change International is a research, communications, and advocacy organization focused on exposing the true costs of fossil fuels and facilitating the ongoing transition to clean energy.


Oil Change International (OCI) is a research, communications, and advocacy organization focused on exposing the true costs of fossil fuels and facilitating the ongoing transition to clean energy. Rooted in community solidarity and principled policy analysis, we work within larger movements to build a fossil free future.

Founded in 2005, Oil Change International now has a talented, experienced, and dedicated international team of twenty, backed by hundreds of thousands of supporters. We are data driven and people powered.


Stephen Kretzmann

Executive Director & Founder



Stephen Kretzmann founded Oil Change International in 2005 in order to educate about the true impacts of fossil fuels, to conduct research, education, and organizing to hasten the transition to clean energy.


Steve has worked on environmental and social issues around the global fossil fuel industry since 1990. After eight years in Greenpeace where he was an early leader in climate campaigns, he became the environmental adviser to the late Ken Saro-Wiwa and the Movement for the Survival of the Ogoni People in Nigeria. For the next ten years, before founding Oil Change International, he worked with communities, public and private financial institutions, corporations, and organizations around the world concerned with the environmental, social, and economic impacts of the fossil fuel industry. He has always connected support for these community-based efforts with systemic critiques of the industry for climate reasons. Mr. Kretzmann has testified before U.S. Congress, authored numerous articles and reports, and is a regular media commentator on issues of corporate accountability, climate change, the global fossil fuel industry, and environmental and human rights.

Elizabeth Bast

Managing Director


Elizabeth Bast is the Managing Director at Oil Change International, where she is responsible for organizational development and administration and supports the organization’s work on international public finance. 


Elizabeth has researched and advocated on a variety of international climate and energy policy issues, including phasing out fossil fuel subsidies, the need for access to clean energy and funding for adaptation to climate change, and energy policy and practices at international financial institutions. Prior to joining Oil Change in 2010, Elizabeth served as International Program Director at Friends of the Earth U.S., where she led the organization’s international climate campaign. Elizabeth has also worked at Worldwatch Institute and the Environmental Policy Center, and holds a Master’s degree from the Massachusetts Institute of Technology and an undergraduate degree from Stanford University.


Alex Doukas

Lead Analyst



Alex Doukas is the Lead Analyst at Oil Change International. His work focuses on ending international subsidies and public finance for fossil fuels, and shifting public resources toward building a clean energy future, including access to clean energy for all.


Previously, Alex worked with the World Resources Institute, where he focused on making international climate finance more effective, including through the design of the Green Climate Fund, as well as catalyzing finance for clean energy access. Alex has also worked with the Pembina Institute in Canada on energy and climate policy, in Canada and beyond. His interest in energy access and sustainability has also previously taken him to Bhutan and Lao PDR to work on appropriate technology and energy access. Alex holds an M.Sc. from the University of Oxford in Environmental Change and Management, and a B.A. Hons. from the University of Toronto.


Vickal Khadka

Office Manager


Vickal Khadka is the Office Manager at Oil Change International, where he supports the organization’s administrative, financial, and fundraising needs and ensures the smooth functioning of OCI’s Washington, DC office.


Vickal has more than 13 years of experience in managing a range of administrative, human resource, and financial management services. Prior to joining OCI, Vickal worked with the Australian Embassy and different non-government organizations. In his work with NGOs, he has supported the identification of new programming and funding opportunities. He was also involved in reviewing partners’ work plans and contractual agreements as well as planning and executing program activities. Vickal lives in Rockville, MD, and loves trekking and playing soccer.

Nathan Lemphers

Senior Campaigner



Nathan Lemphers is a Senior Campaigner at Oil Change International, where he works with the Energy Futures and Transitions Program to accelerate the transformation to a zero-carbon economy.


Nathan has worked on environmental policy issues for over fifteen years. More recently, he worked on oil and pipeline policy with the Pembina Institute, a Canadian energy and environmental policy think tank. Nathan holds a M.C.P. degree from the Massachusetts Institute of Technology and a B.Sc. from the University of Alberta. He is currently a Ph.D. Candidate at the University of Toronto, where his research compares the climate politics of Australia, Canada and Norway.


Matt Maiorana

Digital Director



Matt Maiorana is Oil Change International’s Digital Director, where he manages the organization’s digital infrastructure and leads on the organization’s international communications efforts.


Prior to working with Oil Change, Matt worked for the Climate Action Network – International, Avaaz.org, and Greenpeace USA on a wide range of climate and energy issues. Matt has also been a strong advocate in the youth climate movement, working with the Energy Action Coalition, Sierra Student Coalition, and SustainUS where he served in leadership positions for 9 years. During this time he helped organize the first Power Shift in 2007 and was one of the founding members of YOUNGO, the official youth constituency at the UNFCCC.


Thuli Makama

Senior Advisor – Africa


Thuli Brilliance Makama is Oil Change International’s Senior Advisor for Africa, providing strategic direction and campaign support for the organization’s work in Africa. Thuli works closely with civil society organizations and other stakeholders in the Africa region to shift energy finance towards clean energy access and to expose the impacts of fossil fuel projects.


As a public interest environmental lawyer, Thuli has decades of experience advocating for public participation in environmental and economic development decisions. In 2010, she was awarded the prestigious Goldman Environmental Prize also known as the Green Nobel. Prior to founding the Environmental Law Center, Thuli was Executive Director of the environmental justice organization Yonge Nawe/ Friends of the Earth Swaziland. She currently serves on the Boards of Greenpeace International and Environment Technology Concentration (ETC).


Hannah McKinnon

Energy Transitions and Futures Program Director



Hannah McKinnon is the Energy Futures and Transitions Program Director, working to shape and drive a transition to a zero-carbon economy in the coming decades to secure a safe future, based on climate science.


She has worked on climate change and energy issues for over a decade, with experience ranging from national and international climate policy and advocacy in Canada with Climate Action Network and Environmental Defence Canada, to climate adaptation and risk management in Central America. She has an M.Sc. from the London School of Economics and Political Science and a B.Sc. Hons. in Biochemistry from Mount Allison University, and studied at Lester B. Pearson United World College. Hannah is currently living in Freiburg, Germany.


Amanda Mourant

Engagement Director


Amanda Mourant is the Engagement Director for Oil Change International, where she leads on U.S. digital communications and manages the day-to-day operations of a robust digital advocacy and fundraising program.


Previously, Amanda was the Digital Director at ClimateTruth.org, where she ran hard-hitting campaigns, managed digital channels, and led the “Stand Up For Science” initiative. Prior to ClimateTruth, Amanda worked at Planned Parenthood Federation of America, managing a national digital advocacy and fundraising program while overseeing digital training and support for a nationwide network of affiliates. Prior experience includes grassroots organizing and digital engagement at the local and state levels in both Florida and Oregon.


Greg Muttitt

Research Director



Greg Muttitt has worked on fossil fuels and climate change since 1997. He joined Oil Change in October 2014, and specialises in how climate limits will shape the future of the energy industry.


His book Fuel on the Fire – Oil and Politics in Occupied Iraq was published by Random House in 2011 and The New Press in 2012. Over the last 20+ years he has researched, written and advised on energy and/or climate in Azerbaijan, Canada, Germany, Iraq, Kazakhstan, Norway, Russia and the United States. He has previously worked at Greenpeace, War on Want, Platform, and Corporate Watch. He lives in London.


Alex Ortiz

Communications Associate



Alex Ortiz is a Communications Associate at Oil Change International, where he supports the Communications Team and is working to accelerate the youth climate movement in its just transition to a world free of fossil fuels.


Prior to joining Oil Change, Alex organized students on his university’s fossil fuel divestment campaign as well as with Maryland PIRG on their successful campaign to ban fracking. He has also worked with 350Vermont, developing a four-day climate curriculum program, elevating local residents’ voices and enabling communication with key stakeholders to create collaborative change in their communities. Alex holds a B.A. in Government and Politics with additional studies in Atmospheric and Oceanic Sciences from the University of Maryland.


Collin Rees

Senior Campaigner



Collin Rees is a Senior Campaigner at Oil Change International working to stop the expansion of the fossil fuel industry, support grassroots resistance against dirty infrastructure, end public support for oil, gas, and coal, and wind down fossil fuel production with a just and equitable transition.


He has campaigned on climate and racial justice, labor issues, and new economic models for nearly a decade, spanning local to international levels. Prior to joining Oil Change, Collin worked to build the power of the student fossil fuel divestment movement at 350.org, and trained youth to run campaigns with the Energy Action Coalition. He campaigned at the international climate negotiations with youth advocacy group SustainUS, and previously worked at the White House Council on Environmental Quality. Collin holds a B.Sc. in Mechanical & Materials Science Engineering from Harvard University, and lives in Washington, DC.


Andrew Rowell

Contributing Editor, Priceofoil.org



When not blogging for Oil Change, Andy is a freelance writer and journalist specializing in environmental issues. He has written about the oil industry and climate change for twenty years and his books include: ‘The Next Gulf’ and ‘Green Backlash’.


Andy is based in southwestern England. Andy is also a director of the non-profit company Public Interest Investigations, which runs SpinWatch.


Susan Rubinstein

Operations Director


Susan Rubinstein is the Operations Director at Oil Change International, where she manages administrative, financial, and fundraising activities.


In her work with health and human services nonprofits, she has written grant proposals to foundations, corporations, and governmental agencies; managed HIV programs; and conducted organizational planning activities. Susan has contributed to the fight against HIV through research, needs assessments, strategic and program planning, evaluation, and quality improvement, including facilitating consumer and colleague input into all of these processes. She holds a Master’s Degree in Public Health from the University of Michigan.


Lorne Stockman

Senior Research Analyst



Lorne Stockman is a Senior Research Analyst at Oil Change International, where he researches and analyzes developments in the North American oil industry.


He has worked on oil campaigns as campaigner, campaign coordinator, researcher, and author for over fifteen years. Prior to joining Oil Change International on staff, he worked as a consultant with Greenpeace UK, Platform, and Oil Change as researcher and author of numerous reports and briefings studying investor risk in tar sands and other marginal oil sources. He has extensive research and campaign experience, including analysis and publications on climate change and energy, political economy of oil, transitions in energy markets, energy security, and financial risk; human rights, social justice, and environment & development; and political economy of development and trade issues. Lorne is the author of ‘The Next Gulf’ with Andrew Rowell and James Marriott. Lorne holds a Master’s Degree from King’s College London.


Kelly Trout

Senior Research Analyst



Kelly Trout is a Senior Research Analyst at Oil Change International, focusing on pathways to manage the decline of fossil fuel production as part of the organization’s Energy Futures & Transitions program.


Prior to joining the Oil Change team, Kelly served as communications director for the Chesapeake Climate Action Network for four years, leading media and digital outreach strategies for regional campaigns to ban fracking in Maryland, challenge new fracked-gas pipelines in Virginia, and pass state-level clean energy and climate policies across Maryland, D.C., and Virginia. She was also a communications manager at Friends of the Earth U.S., where she played a key role in the group’s media and investigative work to block the Keystone XL pipeline. Kelly lives in Takoma Park, MD, and plays the violin in the Montgomery Symphony Orchestra.

Bronwen Tucker




Bronwen Tucker is an Analyst at Oil Change International, focusing on shifting public finance and subsidies towards a fair and 100% renewable future as part of the organization’s Stop Funding Fossils program.


Previously, Bronwen worked towards Indigenous rights and a just transition away from the tar sands in Alberta as a campaigner with the Council of Canadians and Greenpeace Canada. Her academic work has focused on evaluating climate and energy policies for their impacts on equity and mitigation, and on social movement theory. She got her start in advocacy as a student organizer for fossil fuel divestment, free tuition, and migrant justice in Quebec. Bronwen lives in Edmonton, Canada and holds a MSc from the University of Oxford and a B.A.&Sc. from McGill University.


David Turnbull

Strategic Communications Director



David Turnbull is the Strategic Communications Director at Oil Change International, developing communications, campaign, and narrative strategies to bring Oil Change’s research on the financing, influence and impacts of fossil fuels to the public, the media, and decision-makers.


Prior to his current position with Oil Change, David was Executive Director of Climate Action Network – International from 2008 to early 2012. At CAN- International, he worked to coordinate the network of 700 NGOs in dozens of countries to develop and advocate for global solutions to the climate crisis. Earlier, David was Communications Director of the US Climate Action Network, where he coordinated joint communications efforts for US NGOs focused on climate change. Before joining USCAN, David worked at the World Resources Institute as a Coordinator for a pair of international networks working to promote inclusive and accountable environmental governance. In a previous incarnation, David spent time on a mountaintop observing the “world’s worst weather” and conducting climate research at the Mount Washington Weather Observatory in New Hampshire.


Susanne Wong

Senior Campaigner



Susanne Wong is a Senior Campaigner with Oil Change International’s Stop Funding Fossils program. She works with an international and Japanese-led coalition to end the Japanese government’s financing of coal.


Previously, Susanne worked at International Rivers where she campaigned to pressure the Asian Development Bank to provide compensation for communities affected by dams in Laos and organized a conference to strengthen the international movement to protect rivers and human rights. Susanne also worked with The Greenlining Institute to highlight the transformational impacts of California Climate Investments on low-income communities of color and to mobilize a coalition to encourage tech companies to invest in and support local communities in Oakland.

Ken Bossong

Shift the Subsidies Database Manager

Ken Bossong works at Oil Change International as the Shift the Subsidies Database Manager. He has worked on energy policy issues since Earth Day 1970.


Ken now also serves as the executive director of the SUN DAY Campaign, a non-profit group founded in 1992 to aggressively promote renewable energy and energy efficiency as alternatives to nuclear power and fossil fuels and as a solution to climate change. He previously directed the energy programs at Public Citizen, the Citizens’ Energy Project, and the Center for Science in the Public Interest. He holds a B.S. in environmental/chemical engineering and M.S. in public administration both from Rensselaer Polytechnic Institute as well as a law degree from Georgetown University.


Michael Brune
Executive Director, Sierra Club

Thomas Cavanagh, Chair
Executive Director, Bandaloop

Renato Redentor Constantino
Executive Director, Institute for Climate and Sustainable Cities

John Durkalski, Treasurer
Partner, Butsavage & Durkalski, P.C.

D. Cole Frates
Co-Founder, Renewables Resources Group & EndOil

Leslie Harroun
Director, Partners for a New Economy

Jonathan G. Kaufman, Secretary
Executive Director, Advocates for Community Alternatives

Stephen Kretzmann
Executive Director, Oil Change International

Jennifer Krill, Vice Chair
Executive Director, Earthworks

Melissa B. Mills
Genetic Counselor, Stanford Children’s Hospital

Jason Scott
Co-Managing Partner, Encourage Capital

Rebecca Solnit

View our annual reports: 2014, 2015, 2016, 2017


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Oil Change International
714 G St. SE #202
Washington, DC 20003
United States
Email: info@priceofoil.org
Phone: +1.202.518.9029