Peggy Kellen directs Center for Resource Solutions’ regulatory and voluntary policy engagement, expert assistance services, and the Clean Energy Accounting Project. She is a dedicated thought leader with over 15 years of experience designing sustainable energy and corporate greenhouse gas (GHG) accounting policies across sectors including electric power, water, transportation, oil and gas, and local governments. Peggy is recognized as a leader in GHG accounting and has advised on the GHG reporting and verification requirements for the Greenhouse Gas Protocol, the Science-Based Targets Initiative (SBTi), the International Organization for Standardization (ISO), the Climate Disclosure Standards Board (CDSB), and others.