April 28, 2014 Climate Registered Member Exelon Corporation surpasses ambitious goal to eliminate carbon emissions seven years ahead of schedule.

April 18, 2014Cool Planet Member The Grand Del Mar undergoes retrofits and reduces energy consumption to shrink its carbon footprint. Learn more about the resort's green initiatives here.

April 18, 2014 Natural Capital Leaders Index recognizes Registry member PG&E as the only US "Decoupling Leader" for growing revenue while simultaneously reducing their environmental impact .

February 18, 2014 Natural Capital Leaders Index recognizes Registry member PG&E as the only US "Decoupling Leader" for growing revenue while simultaneously reducing their environmental impact .

February 18, 2014CDSB releases CDSB Framework Draft Consultation to promote and advance disclosure of environmental information. The expanded framework includes information on natural capital, namely forest risk commodities and water. Learn more here.

February 7, 2014Join the Climate Action Reserve for NACW, the longest running and most anticipated conference for discussing climate policy and carbon markets. The event will be held in San Francisco, March 26-28. More info here.

December 16, 2013The Natural Resource Agency released 'Safeguarding California: Reducing Climate Risk', an update to the 2009 California Climate Adaptation Strategy." Link "Safeguarding California: Reducing Climate Risk.

December 16, 2013Registry Members the California Department of Public Health and UC Irvine receive the 2013 Governor's Environmental and Economic Leadership Award for Sustainable Practices. Congratulations!

December 10, 2013Small Businesses: Enter to Win a Free Year of Registry Membership by Completing the Small Business Survey. Due January 10th.

November 13, 2013UC Berkeley meets its aggressive GHG reduction goal two years ahead of schedule.

October 29, 2013Don't miss the 2014 A&WMA Annual Conference & Exhibition "Navigating Environmental Crossroads", June 24-27 in Long Beach, CA. Learn more and see the call for abstracts..

October 21, 2013Early Registration is Now Open for the 2014 Climate Leadership Conference, hosted February 24-26 in San Diego, California. Best Rates Expire December 12, 2013. Learn MORE.

October 15, 2013 The Climate Registry co-authors white paper that demonstrates how to address the climate impacts of California's water systems.

September 19, 2013 Architectural Digest featured Registry member Sokol Blosser's new tasting facility in the October issue. The facility conforms to Living Building Challenge standards and features a green roof and cantilevered overhangs that reduce heat and glare.

September 19, 2013 Registry member PG&E Corporation released its 2012 Corporate Responsibility and Sustainability Report and is named to the Dow Jones Sustainability North America Index for continued leadership on issues of social, environmental and corporate responsibility.

September 17, 2013 Registry member Exelon Corp. is the top ranked U.S. electric utility in CDP's Global 500 report. Reporting and verifying through The Climate Registry gives the company the highest quality carbon data and a better CDP score.

August 9, 2013 UCLA rated one of the most sustainability universities in the nation by Princeton Review's Green Honor Roll.

August 6, 2013 Delta Air Lines has lowered its annual GHGs by 8.5 million metric tons, an 18.4% reduction since 2005.

August 2, 2013 Ford's 2014 F-150s will give customers the option to run on natural gas.

August 1, 2013 Shell leads on climate change with a self-imposed carbon emissions tax.

July 31, 2013 Manitoba introduces strategy for North America's first petcoke and coal heating ban as well as mandatory reporting.

July 29, 2013 Tower Companies is the first two-time winner of the DC Mayor's Sustainability Award.

July 22, 2013 3Degrees offers perspective on The Registry's recognition of RECs. Contact 3Degrees if you would like to purchase RECs to reduce your organization's carbon footprint.

July 18, 2013 Exelon presents its 2012 Corporate Sustainability Report, ensuring accurate accounting of GHGs by using The Registry standards.

July 16, 2013 Abt Associates announces its membership, alongside industry leaders, with The Climate Registry.

July 10, 2013 Known for its longtime commitment to environmental sustainability, the city of Davis was crowned the state's "Coolest California City" by the Air Resources Board.

May 22, 2013 USPS wins a whopping 10 awards in the Federal Green Challenges Award.

April 23, 2013 Tom Bowman of Registry member Bowman Design Group shows small businesses how to reduce GHGs and cut costs.

April 22, 2013 Delta releases 2012 Corporate Responsibility Report and is recognized in the Wall Street Journal. Delta CEO Richard Anderson said, "At Delta, we believe that transparency goes hand in hand with sustainability."

April 22, 2013 Registry Board Member Mary Nichols named one of Time's Top 100 of 2013. Congratulations, Mary! The recognition is well deserved.

April 19, 2013 Bentley Prince Street President & CEO, Ralph Grogan, wins SBC's Lifetime Business Achievement Award. Congrats from The Climate Registry!

April 19, 2013 Registry members Timberland and Clif Bar sign the Ceres Climate Declaration.

April 17, 2013 Innovative member Ford to cut vehicle waste 40% by 2016.

April 09, 2013 California Air Resources Board names Richard Corey new Executive Director. The Climate Registry congratulates Richard on his new position.

February 26, 2013 Hershey joins The Sustainability Consortium

January 29, 2013 Registry members dominate the GEELA awards, California's highest environmental honor. Sapphos Environmental, City of San Diego, Aquarium of the Pacific, State of California Department of General Services and Alamenda-Contra Costa Transit District win awards in different categories. Learn more here.

January 3, 2013 Registry member WRI and WBCSD released a sustainable procurement guide for wood and paper-based products. download

Please contact us if you have any questions about The Registry.



David Rosenheim
Executive Director
(415) 680-0707

In his role as Executive Director, David is responsible for providing the strategic direction for The Registry and oversees its program, services and staff. He acts as chief liaison with the state and provincial Board members, as well as between states and provinces and their respective federal governments.

David is a proven senior executive with experience as COO, CEO and Director on four corporate Boards. In his previous position, David oversaw U.S. business development for Offsetters, a leading carbon management organization, and he also serves as co-director of the Northern California chapter of Environmental Entrepreneurs. Prior to that, David was an entrepreneur in the high tech sector, founding and/or leading innovative internet start-ups.

David has an MBA from Oxford University, and has extensive experience across the range of key business functions: strategic planning, vision setting, raising capital, business development, board relations, marketing, and digital product development. He is based in San Francisco.

Diane Wittenberg

Director Emeritus

Diane served as Executive Director of The Registry from its inception in 2007 until September 2010. In honor of her contributions and her continuing efforts on behalf of The Registry, the Board of Directors named Ms. Wittenberg Director Emeritus after she stepped down from the Executive Director role.

Prior to this, Diane spent six years as President of the California Climate Action Registry. Previously, she spent 15 years with Edison International, where she played a key role in launching new businesses, including Edison EV (President), Edison Utility Alliances (President) and Edison Technology Solutions (Vice President, Business Development and Marketing). She also served as Vice President for Corporate Communications for Edison International and was internationally recognized for her efforts to launch an electric vehicle industry. She has also served as Vice President of a public relations firm.

Diane has been honored by the Coalition for Clean Air, which presented her with the Clean Air Citizen Award. She also is a past or present board member of EV Global Motors Company, a Lee Iacocca enterprise; TransMagnetics, a brushless motor manufacturer; Women’s Leadership Board, Kennedy School of Government; Thunderbird, the American Graduate School of International Management; L.A. Women’s Foundation; and Partners in Care Foundation.


Peggy Kellen
Director of Policy
(213) 542-0291

Peggy Kellen manages the development and design of The Registry’s GHG accounting and reporting policies. In this role, she leads research initiatives and facilitates consensus across industry, government and environmental non-profit stakeholders on best practices in facility-level GHG accounting and reporting. Peggy has participated as a GHG quantification and reporting expert in the development of mandatory and voluntary GHG reporting requirements for the Western Climate Initiative, the World Resources Institute, the Global Reporting Initiative, and the State of California, among others.

Prior to joining The Registry, Ms. Kellen held positions with D&R International, the U.S. Environmental Protection Agency’s ENERGY STAR Program and the Consumer Energy Council of America in Washington, DC.

Peggy received her Bachelors degree in Cinema-Television from the University of Southern California and a Masters in Energy and Environmental Analysis from Boston University.


Amy Holm
Program Director
(213) 891-6922

As the Program Director, Amy oversees The Registry’s programs and runs the Cool Planet Program. This program provides large utility customers installing energy efficiency projects with publicity and marketing services that communicate the customers’ environmental leadership. Prior to joining the Registry, Amy worked for numerous organizations in both the non-profit and private sector specializing in program management, client liaison, and public education, including the Santa Monica Bay Restoration Foundation, Code Blue Foundation, Orange County Department of Education, and the Global Tomorrow Coalition.

Amy received an M.A. in Environmental Policy in International Relations from Claremont Graduate University and a International Affairs from Lewis and Clark College.

Annie Hoeksma
Outreach Manager, Energy Efficiency Program
(213) 542-0284

Annie works as the Outreach Manager for The Climate Registry’s energy efficiency program called Cool Planet. Hosted by The Registry and partner utility companies, Cool Planet is a unique program which drives business customers to implement, quantify, and model effective long-term energy efficiency strategies in order to reduce greenhouse gas emissions. In addition, Annie works with the Member Services department as the designated contact to help those members who join The Registry through Cool Planet.

Annie interned with The Registry for a year while completing her graduate studies at the University of Southern California, and she is excited to return to The Registry in this new role. Most recently, Annie worked for the Southern California Association of Governments (SCAG) on the Clean Cities Program, which focuses on promoting the use of alternative fuels and alternative fuel vehicles in the Southern CA region. Annie has experience in the private sector as well, through her work as a Sales Manager for Hyatt Hotels & Resorts at the Hyatt Century Plaza Hotel in Los Angeles.

Originally from Los Angeles, Annie holds a Master’s degree in Public Administration from the University of Southern California and a Bachelor’s degree in Anthropology from Amherst College.

Nola Hastings
Outreach Associate

Nola joined The Climate Registry as an Associate for the Cool Plant Project. Nola has a background in water resources and has worked with Southern California Edison, Southern California Gas Co. and water purveyors building collaboration on energy and water efficiency programs. Nola holds a MA in Geography and a BA in Liberal Studies from California State University, Fullerton.

Laura Zahn
Senior Manager, Member Services
(213) 213-1252

Laura manages the services that help members to measure, report, verify and reduce their carbon footprint. Her responsibilities include overseeing the Help Desk, directing member trainings, managing online resources, facilitating member usergroups, and developing and producing member events.

Before joining The Climate Registry, Laura worked on energy and climate change issues for UCLA’s Institute of the Environment and Sustainability, the Climate Action Reserve, and Los Angeles Mayor Antonio Villaraigosa. When she’s not working in the environmental realm, Laura designs and makes fine furniture.

Laura has a Master’s in Urban Planning with a concentration in Environmental Analysis and Policy from UCLA and a Bachelor’s in Human Biology, Health and Society from the College of William and Mary.

Katie Ordal
Manager, Member Services
(213) 213-1258

Katie manages the implementation of The Climate Registry’s program by facilitating member understanding of program requirements and the reporting process. Her responsibilities include overseeing all reporting activities, including operation of the help desk and development of online resources. In her role, she coordinates with The Registry’s policy, software, verification, and communications departments to provide technical input and member perspective in the development of new Registry programs and policies. Given her technical background, she is also responsible for developing products that analyze data to better understand emissions trends and promote the work of The Climate Registry’s members.

Prior to joining The Climate Registry, Katie worked on water resource projects throughout the western United States as a consultant with Stetson Engineers. She was also involved in international development projects with Engineers Without Borders. She holds a BS in Engineering Science with a concentration in Environmental Engineering, a BA in Liberal Arts, and a Minor in Mathematics from Colorado State University.

Ryan Cassutt
Government Services Associate
(213) 891-6931

Ryan Cassutt is a native of Los Angeles’ San Fernando Valley.  He graduated in 2008 with a Bachelor’s in Diplomacy and World Affairs from Occidental College.  For the next two years, he worked at the law firm Seyfarth Shaw, in Century City, Los Angeles.  While at the law firm, he became involved with the “Go Green” committee and volunteered on firm service days for Habitat for Humanity.

In summer, 2010, Ryan served as an AmeriCorps VISTA member with the California Indian Manpower Consortium.  As a VISTA member, he lived and worked on the Hualapai Indian Reservation, located in northwest Arizona near the Grand Canyon.  During his time as a VISTA, Ryan researched green jobs programs and nourished his growing interest in climate and energy.  Upon completion of his year of service, Ryan went back to graduate school to get his Master Public Policy degree at the University of Southern California.  He is currently in his second year and expected to graduate in May, 2014.  His concentration is environmental policy, and he has completed coursework in sustainability and geographic information systems (GIS).  Ryan interned with The Climate Registry and the member services team during the summer of 2013.  When he is not studying, Ryan can be found hiking the many trails of Los Angeles and reading a good book at a local coffee shop.

Chelsea Hasenauer
Program Assistant
(213) 785-1231

A native Angelino eco-nut, Chelsea is excited to be working in the heart of LA to help measure, report, and manage the GHG impacts of North America’s governments, businesses and non-profit organizations. As part of the Member Services Team, she aims to make the Registry’s reporting process smooth, easy, and rewarding for our Members and the rest of The Climate Registry Team.

Prior to joining The Climate Registry, Chelsea conducted policy research in the UK with InCrops’ EnAlgae project, which explores the production and trade of second generation biofuels. Chelsea also worked with Global Green USA’s Policy and Legislative Affairs Department to advance California’s own climate mitigation and adaptation policies: AB32 and AB758. Chelsea received a BA in International Politics and BS in Environmental Systems from the University of California, San Diego and enjoys running long distances, painting, and traveling when not consumed with greening goals.

Alex Carr
Director of International Development
(778) 384-8711

Alex leads TCR’s capacity-building work in developing regions and is also the key point of contact for the Canadian Board Directors.

For the past 15 years, Alex has been working to address sustainable development issues and opportunities by building bridges between and developing the capacity of large, publicly-listed companies, NGOs, and governments in Australia, the U.S. and Canada. She brings a multidisciplinary management perspective with a focus on communications, organizational change, climate policy, and program development.

Alex has a Master of Arts degree from the University of Sussex in England.

Jen Kaminski
Director of Outreach and Communications
(213) 785-1231

Jennifer is Director of Outreach and Communications in her role as TCR’s liaison for the Climate Leadership Awards and Conference. She has a background in public policy and communications. Most recently Jennifer worked in client services and communications for a consulting firm, providing alternative investors with public policy due diligence across all regulated sectors throughout the United States. Previously Jennifer was Deputy Campaign Manager for Rocky Delgadillo’s CA Attorney General race, where she was responsible for coordinating political and labor outreach, organizing grassroots efforts, and overseeing schedule, endorsement process, and candidate advance. Prior to her campaign work, Jennifer worked for a subsidiary of Clear Channel Worldwide managing market research projects within the radio industry. Jennifer has also spent time in the Washington press corp covering national politics for Talk Radio News Service. Jennifer earned her BA in Political Science with an emphasis in Media Relations from California Polytechnic State University in San Luis Obispo, CA.


Salvador Bautista
Junior Developer
(213) 542-0296

Salvador Bautista was born and raised in Los Angeles and feels lucky to be working for a small company with big goals right in his own backyard. Sal assists in the development and maintenance of the Climate Registry Information System (CRIS). As a new graduate from California State University, Los Angeles with a B.S. in Computer Science, Sal is eager to implement the knowledge acquired during many sleepless exam nights and is excited to learn from this new experience.


Margaret Melendrez
Manager of Accounting
(213) 785-1232

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