Takeaways

• California’s ESG disclosure laws move sustainability reporting from voluntary to enforceable for large retailers.
• Retailers will need stronger systems to track emissions, climate risks, and carbon claims across supply chains.
• California’s rules are likely to influence ESG reporting standards well beyond the state.

As climate disclosure rules tighten, California is emerging as a bellwether for what enforceable ESG compliance will look like in the United States. With proposed regulations under Senate Bills 253 and 261, the California Air Resources Board (CARB) has outlined how large companies, including major retailers, will be expected to report on emissions and climate-related risks.

For the retail sector, these laws represent more than another regulatory hurdle. They mark a structural shift that makes ESG reporting mandatory, subject to assurance over time, and backed by enforcement mechanisms.

Read More: California Climate Disclosure Law Nears: What Businesses Must Do Now

California’s climate disclosure framework includes SB-253, which focuses on greenhouse gas emissions; SB-261, which addresses climate-related financial risk; and AB-1305, which regulates transparency around carbon offsets. Together, they apply to companies that do business in California and meet specific revenue thresholds. While the scope is technically limited to activity in the state, the practical impact is far wider. Many of the largest U.S. retailers fall within these thresholds, and others may soon face similar requirements elsewhere.

What makes the legislation notable is both its substance and its speed. The laws establish clear reporting expectations and statutory timelines, with CARB now defining how compliance and enforcement will work in practice.

Climate Compliance: Key Points for Retailers

For retailers, the main challenge lies in turning legal requirements into operational reality. California’s ESG disclosure laws align closely with global reporting frameworks, meaning companies must integrate ESG data into financial, operational, and supply chain systems.

Under SB-253, companies with more than $1 billion in annual revenue must publicly disclose Scope 1 and Scope 2 emissions by August 10, 2026. Scope 3 emissions, which include indirect emissions from supply chains and product use, follow in 2027. For most retailers, Scope 3 emissions account for the largest share of their carbon footprint.

SB-261 applies to companies with over $500 million in annual revenue and requires disclosure of climate-related financial risks and mitigation strategies. While its compliance date is set for January 1, 2026, enforcement is currently paused. In November 2025, the Ninth Circuit issued a temporary injunction blocking enforcement while legal challenges continue. CARB has confirmed it will not pursue enforcement during this period.

AB-1305 is already in effect and targets businesses that market or rely on carbon offsets. Retailers making carbon-neutral or sustainability claims must now provide greater transparency, raising the bar for credibility in green marketing.

California’s Influence on Retail Strategy

California has a long track record of shaping national business practices through regulation. From vehicle emissions to data privacy, companies often align nationwide operations with California standards to avoid fragmented systems.

The same pattern is likely to emerge with ESG disclosure. While SB-253 and SB-261 formally apply only to certain companies, they are expected to shape broader reporting norms as investors and other states push for consistency.

For retailers, this signals a shift in how ESG is managed. What was once a branding or communications exercise is becoming business infrastructure. That means investing in reliable emissions tracking, stronger governance involving finance and legal teams, and readiness for deeper scrutiny from regulators and investors.

The most prepared retailers will treat ESG compliance as a strategic advantage. Those who delay risk falling behind on transparency, data quality, and trust.

Also Read: SEC Drops Climate Rules as States and Global Powers Push Ahead

Key Developments to Watch in 2026

CARB’s rulemaking process is underway, with public comments open until February 9 and a public hearing scheduled for February 26. Legal challenges to SB-253 and SB-261 continue, and upcoming court decisions will shape the pace of climate risk reporting.

In a nutshell, ESG in retail is moving from a voluntary initiative to a regulated discipline. California’s rules offer a preview of the future, and retailers that adapt early will be better positioned for what comes next.

Follow more news and views via our Reporting & Standards and Featured Articles sections, and stay updated on the top ESG events to attend in 2026 for industry insights and networking.

If you're looking for suitable ESG and Sustainability providers to share customized solutions specific to your business needs, you can check out KnowESG's Solutions page.

If you are an ESG provider looking to get your organization listed on our portal, visit this page.

Source: TFL