What's Happening?
On October 12, 2026, the California Office of Administrative Law officially approved the California Air Resources Board’s (CARB) initial climate disclosure regulations, which are now immediately effective. These regulations, stemming from Senate Bill
253 (SB 253), require certain public and private U.S.-formed entities operating in California with over $1 billion in annual revenue to report their greenhouse gas (GHG) emissions. The first annual reports for Scope 1 (direct emissions) and Scope 2 (indirect emissions from purchased energy) are due by November 10, 2026. Companies are advised to consult CARB’s reporting guidance and FAQs for submission details, which can be made via their Report Intake Platform or email. For the initial reporting period, companies can use data collected as of December 5, 2024, even without limited assurance. Those not collecting data by that date should submit a statement of non-reporting explaining their circumstances. Enforcement of SB 261, which pertains to climate-related financial risk disclosures, remains suspended pending an appeal.
Why It's Important?
These new regulations mark a significant step in California's efforts to combat climate change by increasing transparency around corporate emissions. The mandate affects a broad range of large businesses operating within the state, compelling them to measure and disclose their environmental impact. This could lead to increased accountability and potentially drive companies to adopt more sustainable practices to reduce their carbon footprint. The regulations also set a precedent for other states or even federal action, potentially influencing national climate policy and corporate environmental reporting standards across the U.S. Businesses that fail to comply could face penalties, while those that proactively manage and reduce their emissions may gain a competitive advantage in an increasingly environmentally conscious market. The requirement for Scope 3 emissions reporting, scheduled for 2027, will further expand the scope of disclosure to include indirect value-chain emissions, pushing companies to assess their entire supply chain's environmental impact.
What's Next?
Companies subject to SB 253 must prioritize the preparation and submission of their Scope 1 and Scope 2 GHG emissions reports by the November 10, 2026 deadline. This involves gathering relevant data, ensuring accuracy, and utilizing CARB’s provided resources for submission. Businesses that were not collecting emissions data by December 5, 2024, need to prepare and submit a statement of non-reporting, clearly documenting their eligibility for this first-year relief and their good-faith compliance efforts. Looking ahead, companies will need to prepare for the inclusion of Scope 3 emissions reporting, which is slated to begin in 2027. This will necessitate a more comprehensive assessment of their value chain emissions. The ongoing appeal regarding SB 261's climate-related financial risk disclosure requirements means businesses should monitor developments closely, as its enforcement could introduce additional reporting obligations in the future.
Beyond the Headlines
The implementation of California's climate disclosure regulations extends beyond mere compliance, signaling a broader shift towards integrating environmental accountability into corporate governance. This move could influence investor decisions, as stakeholders increasingly consider environmental, social, and governance (ESG) factors. Companies that demonstrate robust emissions reporting and reduction strategies may attract more capital and enhance their brand reputation. Conversely, those lagging in disclosure or showing high emissions could face increased scrutiny and potential divestment. The regulations also highlight the growing trend of states taking the lead on climate policy in the absence of comprehensive federal action, potentially creating a patchwork of regulations across the U.S. This could pose challenges for national companies operating in multiple states, requiring them to navigate diverse reporting standards and compliance frameworks. Ultimately, these regulations could accelerate the transition to a low-carbon economy by incentivizing corporate innovation in sustainable practices and supply chain management.
