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Tim Duncheon

Tim Duncheon is an associate in the firm’s San Francisco office and a member of the Environmental and Energy Practice Group. He represents clients in litigation, policy, and transactional matters involving greenhouse gas regulation, carbon markets, environmental review, ESG commitments, and other related issues. Prior to joining Covington, Tim clerked for the Honorable William A. Fletcher of the United States Court of Appeals for the Ninth Circuit and the Honorable Charles R. Breyer of the United States District Court for the Northern District of California.
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Laws and regulations that require companies, both private and public, to disclose their greenhouse gas (GHG) emissions continue to expand in the European Union and in the United States.  Under the EU Corporate Sustainability Reporting Directive (CSRD), beginning in 2025, EU-based public companies and large EU-based private companies will be required to report all material Scope 1, 2, and 3 GHG emissions as set forth in the European Sustainability Reporting Standards.  In the United States, California recently passed landmark climate-related disclosure legislation that will require U.S. companies that do business in California and have greater than $1 billion in annual revenues to file annual reports publicly disclosing their Scope 1 and 2 GHG emissions beginning in 2026 and Scope 3 GHG emissions in 2027.  This legislation is expected to be joined by the U.S. Securities and Exchange Commission’s (SEC) proposed climate-related disclosure rule.  Initially proposed in March 2022, if finalized, the SEC rule would require public companies to disclose their Scope 1 and Scope 2 emissions and material Scope 3 emissions.  And later this year, world policymakers, activists, and business leaders will convene at COP28 to discuss global progress towards achieving the net-zero GHG emissions targets set by the Paris Agreement.

The Greenhouse Gas Protocol (GHG Protocol) sits at the center of all these efforts.  Established by the World Resources Institute and the World Business Counsel for Sustainable Development in 2001, the GHG Protocol establishes comprehensive standards for private and public entities to calculate and report their GHG emissions and track progress towards their emissions targets.

Continue Reading Calculating and Reporting Greenhouse Gas Emissions: A Primer on the GHG Protocol

On September 13, 2023, the California Legislature passed Assembly Bill 1305 (AB 1305), which imposes wide-ranging disclosure requirements on (1) entities that market or sell voluntary carbon offsets and (2) entities that purchase and rely on these offsets to advertise their climate goals.  The bill has been enrolled and is currently on Governor Newsom’s desk.

AB 1305 comes on the heels of escalating criticism of voluntary carbon offsets, including arguments that corporations use low-quality offsets to engage in greenwashing.  AB 1305 is likely to prompt companies to engage in careful due diligence before making climate-related claims and to ensure that they rely on high-quality offsets that correspond to real emission reductions or removals.Continue Reading Law Enacted by California Legislature Would Require Companies to Disclose Key Details About Voluntary Carbon Offsets and Claims Made in Reliance Upon Them

Last week, the California Legislature passed two bills comprising the core of a landmark “Climate Accountability Package.”  Together, the two bills will impose extensive new climate-related disclosure obligations on thousands of U.S. public and private companies with operations in California.  Senate Bill 253 (SB 253) would require companies with greater than $1 billion in annual revenues to file annual reports publicly disclosing their Scope 1, 2 and 3 greenhouse gas (GHG) emissions.  Senate Bill 261 (SB 261) would require companies with greater than $500 million in annual revenues to prepare biennial reports disclosing climate-related financial risk and describing measures adopted to mitigate and adapt to that risk.

Yesterday afternoon during an appearance at Climate Week NYC, Governor Newsom told the audience emphatically, “of course I will sign those bills.”  When he does, many more companies will be required to improve the accuracy, completeness and rigor of their GHG reporting and climate risk disclosures. Because of the complexity of GHG reporting, we have focused the remainder of this post on SB 253.  Please see our separate post on SB 261 here.Continue Reading California Legislature Passes Landmark Climate Disclosure Laws: Spotlight on SB 253

Last week, the California Legislature passed two bills as part of the state’s landmark “Climate Accountability Package.”  If signed by Governor Newsom as anticipated, the two laws—Senate Bill 253 (SB 253) and Senate Bill 261 (SB 261)—will usher in significant climate-related disclosure requirements for thousands of U.S. public and private companies that do business in California.

SB 253 and SB 261 mark the most extensive emissions- and climate-disclosure laws enacted in the United States to date.  SB 253 requires companies with greater than $1 billion in annual revenues to file annual reports publicly disclosing their direct, indirect, and supply chain greenhouse gas (GHG) emissions, verified by an independent and experienced third-party provider.  SB 261 requires companies with $500 million in annual revenues to prepare biennial reports disclosing climate-related financial risk and measures they have adopted to reduce and adapt to that risk, with the first report due by January 1, 2026.

This post focuses on SB 261’s climate-related financial risk disclosure requirements. You can find our post on SB 253’s GHG emissions reporting requirements here.Continue Reading California Legislature Passes Landmark Climate Disclosure Laws: Spotlight on SB 261

On August 16, 2022—one year ago today—President Biden signed the Inflation Reduction Act (“IRA”), the most significant clean energy and climate law in U.S. history.  As we described in a series last summer, the IRA created durable tax credits and other fiscal programs to revitalize domestic manufacturing and incentivize clean energy solutions in nearly every sector of the economy. The IRA’s one year anniversary is a key opportunity to take stock of what the law has propelled and what is expected around the corner.Continue Reading The First Year of the Inflation Reduction Act

The Greenhouse Gas Protocol (“GHG Protocol” or “Protocol”)—a leading standard setter for measuring and managing corporate greenhouse gas emissions, borne of a partnership between World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD)—has opened stakeholder surveys concerning the revision of its Corporate Accounting and Reporting Standard, Guidance on Scope 2 Emissions, and the Scope 3 Standard and Scope 3 Calculation Guidance.Continue Reading Corporate Carbon Counting Under Scrutiny—Comments Requested on Pending Updates to the Greenhouse Gas Protocol

On August 16, 2022, President Biden signed the Inflation Reduction Act (IRA) into law, directing a record $370 billion toward clean energy investments.

Yesterday, the White House released a 182-page guidebook to the IRA entitled Building a Clean Economy.  John Podesta, Senior Advisor to the President for Clean Energy Innovation and Implementation, explains in…