Hélène Altmann

Executive Assistant, Funder Collaborations & Planning

Hélène Altmann joined ClimateWorks in 2015.  She has over 20 years of senior administrative experience. Shortly after she moved from Lyon, France to San Francisco she started to work at the corporate headquarters for Bechtel Group, Inc. During her 15 years with the engineering and construction company she assumed a number of different roles. Her responsibilities included contracts staffing, future assignment planning, salary planning, and the administration of the rewards programs. She was also assigned to information technology as contract administrator of the vendor agreement for information services in support of the entire Bechtel Group. These responsibilities included the review of new packages and the negotiations and final approvals of the invoices in excess of $1 million monthly. Hélène also provided input to and supervised the design and implementation of a new corporate online testing software for virtual management.  Hélène holds a Brevet de Technicien Supérieur (BTS): Secrétariat de Direction.

Jason Anderson

Director of International Climate Initiatives & Interim Program Director, Non-CO₂ Mitigation

Siddarthan Balasubramania

India Strategist

Jessica Brown

Product Manager, Systems and Planning

Ann Cleaveland

Senior Director, Strategic Planning

Ann is a business manager and analyst with over ten years of experience in strategy and partnership development, program management, and operations. She leads the Strategic Planning team at ClimateWorks, where she has built and managed ClimateWorks’ global planning, program operations, and data strategy, and she is the architect of the Foundation’s learning and evaluation systems.  Ann worked on financial models at Lucid Energy Technologies, an early-stage company developing renewable energy systems. She also managed programs to launch and grow sustainable supply-chain partnerships at TCHO Ventures, a chocolate manufacturer. Earlier in her career, she directed Latin America operations at a global travel company, and she is fluent in Spanish. Ann received her B.A. from Rice University and her MBA in sustainable management from the Presidio Graduate School, where she also served as support faculty in economics.

Sue Cook

Vice President, Systems and Planning

Sue manages ClimateWorks Systems and Planning functions, to ensure the organization is empowered by highly efficient and effective systems, processes, and operating practices. In this role she works with internal teams, as well as the broader philanthropic and climate communities. Sue has more than 25 years of experience in a variety of executive strategic and operational roles in high tech. She was the co-founder of Spearfish Innovation, helping clients — including for-profit start-ups, Fortune 50 companies, and non-profit organizations — achieve their goals through innovation in business products, services, and processes.

Casey Cronin

Associate Director, Advisory & Research

At ClimateWorks, Casey Cronin’s primary responsibilities include integrating quantitative modeling and emissions projections, policy research projects, and industry trend-spotting to provide insights and analysis to support ClimateWorks’ global strategy for reducing greenhouse gas emissions. As part of ClimateWorks’ Global View program, he manages the strategic roadmap for the Global View and associated work products, and provides advisory services to incorporate analysis and work products into the goals and strategies of ClimateWorks’ programs and international engagement. 

Prior to ClimateWorks, he was a Senior Account Executive at Antenna Group, a strategic communications agency representing clean technology companies focused on alternative energy, energy efficiency, storage, pollution remediation, etc. While there, he developed industry experience with silicon and thin film PV, concentrating PV, utility-scale solar thermal, algal biofuels, and other emerging clean energy technologies. Mr. Cronin has an M.Sc. in Management Science & Engineering from Stanford University and a B.A. in Development Studies and Economics from Brown University.

Arturo D’Brot

Desktop Support Administrator

Anthony Eggert

Program Director, Oil

Anthony Eggert directs the Oil portfolio at ClimateWorks which supports policies for cleaner and more efficient vehicle and fuel technologies, increased availability and accessibility of transit, biking, and walking, and public support for a transition away from oil and toward low-carbon alternatives. Anthony comes to ClimateWorks with over 18 years of public and private sector experience working on clean energy technologies and policies. Prior to ClimateWorks Anthony served as the founding director of the UC Davis Policy Institute for Energy, Environment and the Economy dedicated to leveraging university expertise to inform better policy. Anthony public sector experience includes serving as an appointee of Governors Jerry Brown and Arnold Schwarzenegger helping to implement California’s landmark clean energy and climate policies. Anthony’s started his career as an automotive engineer and program manager at Ford Motor Company working on regulatory compliance and advanced vehicle technology development. Anthony received a bachelor degree in mechanical engineering at University of Wisconsin-Madison and master degree in transportation technology and policy at UC Davis.

Lina Fedirko

Intelligence Officer Fellow

Lina Fedirko is an Intelligence Officer Fellow at ClimateWorks Foundation. She manages the Oil Transportation Research and Intelligence Network (TRAIN), a platform for disseminating key information about the transition to low-carbon transportation alternatives and emerging mobility patterns.

Lina’s research, writing, and programmatic implementation to date has focused on global urban climate change and rapid development impacts.  Most recently, Lina contributed policy research to the Urban Transportation Chapter of Climate Change and Cities, Second Assessment Report of the Urban Climate Change Research Network (UCCRN), a state-of-knowledge publication examining 16 urban sectors with respect to climate issues.

Operating locally, Lina assisted a New York City Economic Development Corporation in planning a three year, $1.2 million program to expand access to healthy food options to low income neighborhoods of Central Brooklyn. In the wake of Hurricane Irene, Lina led a transit-oriented development zoning study for a housing non-profit examining post storm flood impact and adaptation options of a local municipality. Acting globally, Lina has collaborated with UN Habitat Cities and Climate Change initiative to evaluate the effectiveness of Participatory Climate Change Risk Assessments in small towns of South-East Asia and the Pacific.

Lina earned an MS in Urban Policy Analysis and a Professional Certificate in Sustainability Strategies from Milano School of International Affairs, Management, and Urban Policy at the New School University. She holds a BFA in Apparel Design from School Art and Design at Pratt Institute. Lina is fluent in Ukrainian, Russian and speaks basic Polish.

Chris Fielder

Associate, Grants and Contracts

Meagan Fox

Project Manager, Business Applications

Ilmi Granoff

Director, Sustainable Finance

Suzanne Greva


Suzanne Greva comes to ClimateWorks with over 20 years of experience in accounting and auditing roles, including seven-plus years of experience at the Controller level in the nonprofit sector. Prior to joining ClimateWorks, Suzanne served as the Director of Financial Services and Controller at both Golden Gate University and Dominican University of California. Suzanne also held various accounting positions at Sonoma County wineries including Kendall-Jackson Wine Estates. Prior to joining the private sector, Suzanne served as an auditor for Deloitte & Touche in their San Francisco office focusing on the Wine Industry. Suzanne is a Certified Public Accountant and earned her BS degree in Business Administration with a concentration in Accounting from UC Berkeley’s Haas School of Business.

Dan Hamza-Goodacre

Program Director, Energy Efficiency

Dan Hamza-Goodacre directs the Buildings and Industry portfolios at ClimateWorks Foundation, and is Director of the Kigali Cooling Efficiency Fund. Dan has over 20 years of experience working on climate change and sustainable development in the public and private sectors. His work spans all major continents. Previously Dan worked for PwC, where he was the Deputy CEO of the Climate and Development Knowledge Network (CDKN), a global program funded by the UK and Dutch governments that helps developing countries respond to climate change. Before that, Dan held various posts at Defra, (the U.K. Environment and Agriculture Ministry), including: Head of the Secretary of State’s office; co-founder of the UK’s Adapting to Climate Change Program; Adaptation Policy Lead on the UK Climate Change Act and Sustainable Agriculture Advisor. Dan also worked for the UK Foreign Office as a Climate Attaché. He is a regular speaker and moderator at conferences and events and has written widely on climate and development. Dan has an MSc in International Development from Bristol University, where he also was a lecturer and researcher in global environmental politics. In his early career Dan lived and worked in the rainforests of Latin America. He volunteers regularly in schools in support of their ‘green’ teams.

Jessica Harris

Senior Associate

Jessica Harris is a Senior Associate for the External Relations team. Prior to joining ClimateWorks, she was a Program Assistant in the Urban and Higher Education Program at the Carnegie Corporation of New York, where she helped to manage a large portfolio of grants focused on teacher and principal training, support, and development. Jessica also served as a Policy Fellow for the New York City Council, and as a Technical Advisor and Systems Reviewer for Pure Earth, an international organization focused on the remediation of toxic pollution sites worldwide. Jessica holds a BA in English from Skidmore College, and received an MPA in Public and Nonprofit Management and Policy from New York University, with a focus on environmental policy.

Jess Lam

Senior Program Associate, Clean Power

Jess Lam is the Senior Program Associate of the Clean Power program. Prior to joining ClimateWorks, Jess worked at ICF International supporting climate change and sustainability projects focusing on state, federal, and international GHG accounting. Ms. Lam has also worked at the Natural Resources Defense Council on building energy efficiency and UC Davis Institute of Transportation Studies on sustainable transportation research. Jess holds a master’s degree in Environmental Management from Duke University and a B.S. in Environmental Policy and Planning from the University of California, Davis.

Amy Malaki

Program Manager, Oil

Jan Mazurek

Program Director, Clean Power

Jan Mazurek, PhD directs ClimateWork’s Clean Power campaign. She has worked on energy and climate policy at the federal and state level for more than 20 years. Mazurek most recently conducted technical research primarily around California’s power sector and Assembly 32 compliance. Prior to her power work, she served as Senior Policy Advisor to the California Air Resources Board. Before CARB, Mazurek was a member of the Obama-Biden Presidential Transition Team focused on the U.S. Environmental Protection Agency. She has published two books with prestigious university presses and more than 100 publications. Mazurek also has testified on environmental policy matters before U.S. Congressional subcommittees. She holds a doctorate from UCLA’s Luskin School of Public Affairs.

Brian McCracken

Vice President, Finance & Administration

Brian McCracken leads the finance and administration functions at ClimateWorks. He has over 20 years of experience in finance and business development roles, primarily in the internet and software industries. Prior to joining ClimateWorks, Mr. McCracken worked as an independent financial consultant, helping establish financial and reporting infrastructure at for-profit start-ups in addition to several emerging San Francisco-based non-profits, including ClimateWorks Foundation, Taproot Foundation, and Tipping Point Community. Mr. McCracken was also a key member of the senior executive team at iSyndicate, a digital syndication company, where he built and launched a service that became the web’s largest content affiliate network. Through his positions as Interim CFO, Vice President—Products, and Vice President—Business Development, Mr. McCracken helped lead iSyndicate from pre-launch to $12 million in annual revenues, and then brokered the sale of the company. Earlier, Brian managed the budgeting process and financial planning for Adobe Systems Incorporated. Brian holds a M.B.A. from the Darden School at the University of Virginia and a B.A. in economics from Whitman College.

Charles McElwee

Vice President, Programs

Charlie McElwee is the Vice President of Programs at ClimateWorks Foundation. At ClimateWorks he helps direct funding to support public policies that prevent dangerous climate change and promote prosperity in the geographic regions that have the greatest potential to reduce greenhouse gas emissions. McElwee practiced environmental and energy law for over 25 years at an international law firm, including five years in Shanghai. He developed an expertise in Chinese environmental and energy law and policy and served as an Adjunct Professor of Law at Shanghai Jiaotong University’s School of Law. He won the President’s Prize, the University’s highest award, for extraordinary contributions to the University, and was awarded the Shanghai Municipal Government’s Magnolia Award, the highest honor the city bestows upon foreigners. He is a board member of the International Council on Clean Transportation, the Climate and Land Use Alliance, and serves on the China Advisory Board of the Environmental Defense Fund. His book, Environmental Law in China, was published by Oxford University Press in 2011.

Laurie McManus

Executive Assistant, Programs

Surabi Menon

Senior Director, Advisory & Research

Surabi Menon is the Advisory and Research Director at ClimateWorks. Her work supports climate philanthropy by providing a global context for climate mitigation and climate policy progress, identifying high-impact investment opportunities, supporting energy transitions that lead to a low carbon pathway and working on frameworks to identify the developmental and economic benefits associated with reducing climate pollution. Dr. Menon is a charter member of the U.S. EPA’s Science Advisory Board and sits on the Board of the Institute for Industrial Productivity and the Global Buildings Performance Network. She has published over sixty peer-reviewed publications, and co-authored the 2007 IPCC report that led to a Nobel Peace Prize. She also started an environmental NGO in India in 2008.  

Dr. Menon has over 16 years of professional experience in the climate change field.  Before joining ClimateWorks in 2012, Dr. Menon was a staff scientist and the leader of the Heat Island Group at Lawrence Berkeley National Laboratory in California. Prior to that, she was a climate scientist at Columbia University and NASA Goddard Institute for Space Studies in New York.  She has a Ph.D. in Atmospheric Science, and an MBA in Sustainable Management.  

Seth Monteith

ClimateWorks Foundation

Seth Monteith joined the Advisory & Research Team at ClimateWorks in 2013. He works on a developing the core products and sets of insights that make up the ClimateWorks Global View. This includes downscaling energy-climate models for examining low-carbon pathways, analyzing GHG mitigation policies, evaluating philanthropic portfolios, and designing and managing research projects including the Carbon Transparency Initiative (CTI). Seth also designs data visualizations for the many Advisory & Research Team products.

Prior to joining ClimateWorks, Seth worked on privacy policy at Carnegie Mellon University’s CyLab, and spent two years in Kazakhstan as a Peace Corps Volunteer. He holds a B.A. in European History and Russian Language from Portland State University, and an M.S. in Public Policy and Management from Carnegie Mellon University focusing on Policy Analytics.

Negar Naraghi

Director, Human Resources

Melissa Nunan-Lew

Executive Assistant to Vice President

Melissa Nunan-Lew is the Executive Assistant to the VP of Programs at ClimateWorks. She has over 15 years of experience supporting executives in addition to experience in operations management and human resources. Prior to joining ClimateWorks, Ms. Nunan-Lew was the Executive Assistant to the President & CEO and board liaison for the Global Fund for Women, a non-profit grantmaking foundation supporting women’s human rights worldwide.  She holds a BA in Education from San Francisco State University.

Charlotte Pera

President & CEO

Charlotte Pera joined the ClimateWorks Foundation as President and Chief Executive Officer in 2012.

Before joining the ClimateWorks Foundation, Ms. Pera served as the Senior Vice President and Director of U.S. Programs at the Energy Foundation. Prior to this position, Ms. Pera directed the Energy Foundation’s U.S. Transportation Program. Ms. Pera helped launch the Energy Foundation’s transportation program in China and served as a special advisor during the start-up of the European Climate Foundation.

Before joining the Energy Foundation, Ms. Pera analyzed advanced vehicle technologies, developed new emissions inventory models for marine vessels and nonroad equipment, and designed innovative public programs to reduce vehicle pollution at engineering consulting firm Acurex Environmental (1991 to 1999). Ms. Pera sits on the board of the International Council for Clean Transportation and the European Climate Foundation. Ms. Pera holds B.S. and M.S. degrees in Mechanical Engineering from Stanford University.

Chaquita Perkins

Office Manager

Dan Plechaty

Senior Associate, Advisory & Research

Dan Plechaty is a Senior Associate in ClimateWorks’ Advisory & Research team, where his primary responsibilities include data analysis, policy modeling, economic valuation, and data visualization. This work spans across ClimateWorks’ program areas and includes investigating the multiple benefits of aligning health and climate initiatives and exploring the opportunities for cities to serve as a nexus for climate action as well as contributing to the development of the Carbon Transparency Initiative.

Prior to joining ClimateWorks, Dan was a Greenhouse Gas Emissions Analyst in the World Wildlife Fund’s Private Sector Engagement team and was an Economist at RCF Economic and Financial Consulting, where he focused on environmental and energy economics. Dan holds bachelor degrees in Economics and Environmental Studies from the University of Chicago and received a Master of Environmental Management degree from Duke University’s Nicholas School of the Environment with a concentration in Environmental Economics and Policy.

Mark Quinn

Executive Assistant to President & CEO

Mary Raftery

Senior Advisor, Funder Collaborations

Gretchen Rau

Associate Director, Executive Office

Gretchen Rau joined the ClimateWorks Foundation in 2008. In her current position Ms. Rau manages the activities of the board of directors and internal leadership teams, coordinates the annual organizational goal-setting process, and contributes to other cross-functional projects on an ad hoc basis. Prior to joining ClimateWorks, Ms. Rau’s diverse professional experience included a career in civil engineering with a specialization in geotechnical structures. She served a three-year term on the Board of Directors of the San Francisco Zen Center and holds three degrees related to civil engineering: a B.S. from Humboldt State University, an M.S. from Virginia Tech, and a Ph.D. from the University of California at Berkeley.

Shawn Reifsteck

Vice President, Philanthropy

Shawn Reifsteck is the Vice President of Philanthropy for ClimateWorks Foundation, where he leads the funder collaboratives, development, and communications teams. Shawn has extensive leadership experience in the fields of philanthropy, environmental conservation, and civic engagement, and has built a reputation in the climate philanthropy community over much of the past decade as a strategic and collaborative leader. He has held numerous leadership positions with organizations over the past 20 years including with Points of Light, Philanthropy Associates, The Ocean Foundation, and the food bank system in the US. Shawn earned his Masters in Nonprofit Administration from the University of San Francisco, holds a B.A. in Urban Studies from Macalester College, and is a graduate of the Advanced Management Program at the Wharton School—University of Pennsylvania.

Hannah Roeyer

Senior Associate, Strategic Planning

Prodipto Roy

ClimateWorks Foundation

Prodipto Roy is the Senior Program Associate of the Energy Efficiency program. Prior to joining ClimateWorks, Prodipto worked at the Mayor’s office in Los Angeles where he focused on a variety of projects including supporting the Port of Los Angeles & Long Beach move towards a zero-emissions future and stimulating the water infrastructure sector in Southern California to modernize and create jobs. Prodipto holds a B.S. in Environmental Science and Environmental Policy from the University of California, Los Angeles.

Michael Ryken

Staff Accountant

Tim Stumhofer

Associate Director, Sustainable Finance

Tim brings a background spanning the private, public, and nongovernmental sectors to the ClimateWorks sustainable finance program. Most recently he was stationed in Germany where, with the support of a Robert Bosch Foundation fellowship, he worked in the international climate finance unit of the German Federal Environment Ministry (BMUB) and the climate competence center in Germany’s state development bank (KfW). Prior to his time in Germany Tim spent five years at the Greenhouse Gas Management Institute developing emissions measurement, reporting, and verification (MRV) capacity building interventions for a range of global applications including carbon trading, low emissions development planning, and international treaty compliance. Tim has also worked in the private sector commercializing emission reduction projects under the Clean Development Mechanism. He holds a BA from Willamette University and an MSc from the London School of Economics.

Kathy Tryce

Associate Director, Grants Management

Kathy Tryce joined ClimateWorks in 2012 as Grants and Contract Manager. She has more than 15 years’ experience in the nonprofit sector, including Project S.I.S.T.E.R. and the Healing Woman Foundation, which she transitioned from a sole proprietorship to a public charity. Ms. Tryce also worked for 10 years at the David & Lucile Packard Foundation, first in the Conservation and Science Program and later in Grantmaking Operations, where she developed her deep love of tax-code compliance. She has a B.A. in Government from Pomona College and a J.D. from Santa Clara University.

Travis Uhrig

System Administrator

Tao Wang

China Strategist

Rees Warne

Director, Evaluation and Learning

Zach Warnow

Program Manager, Communications

Zach Warnow leads a communications-focused grant-making program at ClimateWorks. He has ten years of experience helping organizations tell their stories and use strategic communications to achieve their goals. Prior to joining ClimateWorks, Zach worked at Big Think Studios, a creative firm that crafted powerful advertisements for advocacy groups and helped non-profits and foundations with branding, identity, and communications strategy. He also spent five years at Resource Media, where he worked with environmental and public health groups designing and executing effective campaigns. As a program director at Resource Media, he led work advancing climate science findings in the media, managing research-driven media audits to inform communications strategy, and supporting organizations with their media campaigns. He has a B.A. in Sociology from The Colorado College.

Brad Weinrieb

Communications Officer

Brad Weinrieb manages corporate communications for ClimateWorks. He has over 10 years experience helping social sector organizations communicate, develop partnerships and resources, and make an impact. Prior to ClimateWorks, Brad was an associate director for donor communications at the Sierra Club, where he helped to launch the Beyond Coal campaign. Brad began his career in the entertainment industry—working on films by Steven Spielberg, Robert DeNiro, and others—and he holds a BA in art history from UC Berkeley.

Stephanie Westbrook

Senior Administrative Assistant

Catherine Witherspoon

Senior Advisor

Catherine Witherspoon advises ClimateWorks on the linkages between air quality management, short lived climate pollutants, and climate mitigation. Previously, she served as the program director for ClimateWorks’ non-CO₂ fast action campaign. She has 26 years of regulatory, legislative, and management experience in the air quality field. Ms. Witherspoon started as a student assistant at the California Air Resources Board in 1981, and eventually rose to Executive Officer (2003-2007). In that role, she managed a staff of 1,100 and an annual budget of $350 million. Ms. Witherspoon was directly involved in the drafting of the California Clean Air Act and California’s landmark Greenhouse Gas Solutions Act.  In the mid-1990s, she left state government and served briefly as an Expert Consultant to the U.S. Environmental Protection Agency (Region 9), Legislative Director for the South Coast Air Quality Management District, and sole proprietor of her own consulting firm, before returning to CARB in 1999 as Senior Policy Advisor to the then-Chairman Dr. Alan Lloyd.  Ms. Witherspoon has a BA in Politics from the University of California at Santa Cruz.

Ken Yoshimoto

Staff Accountant

Kelly Young

Senior Director, Information Technology

Kelly Young has been ClimateWorks’ Director of Information Technology since December 2011. She is responsible for the strategic direction and implementation of information and communications technology solutions. Kelly is a business-minded, quality-focused IT leader with 15 years of experience driving technology strategies in diverse sectors including corporate retail, finance, software, healthcare, consulting, and philanthropy. Her areas of expertise include business intelligence, disaster recovery, active directory, cloud computing, and social media technologies. Prior to joining ClimateWorks, she served as Director of IT at Circlepoint Consulting and at The Charles and Helen Schwab Foundation. Kelly holds a Bachelor’s degree in Computer Information Systems from San Francisco State University and earned technology certifications from Microsoft, Cisco, Red Hat, and Linux.  She is also a member of the Technology Affinity Group (TAG).