As with so many sustainability rules and frameworks, California has made changes to its historic Senate Bill 253, deferring its reporting deadline by three months. Here’s what manufacturers need to know.
On June 24, the California Air Resources Board (CARB) deferred the first reporting deadline to Nov. 10, 2026, and confirmed that first-year submissions will not require third-party assurance. Furthermore, the agency reiterated its stance on first-year enforcement discretion, signaling that it will focus on supporting companies moving toward compliance rather than penalizing initial reports.
Operational leads are already balancing exacerbated supply chain volatility, floor throughput, margin pressures and price fluctuations, so there could be the temptation to think: “We have until 2027! We can coast through this year’s deadline with whatever data we have on hand and worry about real compliance next year.”
It’s a risky miscalculation. The real compliance work must happen right now, during this window of discretion.
What does CARB’s ‘enforcement discretion’ actually require?
CARB’s enforcement notice ties first-year flexibility to two strict conditions: a company must demonstrate a documented, “good-faith effort” to comply, and it must retain all data relevant to emissions reporting for its prior fiscal year. For the first report, CARB has said companies may rely on information they already possess or are already collecting, but they must show they are actively working toward full compliance.
If an industrial manufacturer approaches the initial Nov. 10, 2026, deadline by scrambling together a few unverified utility bills, guessing fleet fuel consumption and dropping a rough estimate into a spreadsheet, it is probably not demonstrating a “good-faith effort.”
Companies must be able to produce a verifiable data trail showing how they arrived at their initial Scope 1 and 2 numbers. If an auditor or agency official asks to see the underlying source data or the methodology behind your operational boundaries, and your team responds with a fragmented network of disconnected spreadsheets, you risk losing the safe harbor. Administrative penalties under SB 253 can reach $500,000 per reporting year.
What changes in 2027?
From there, the compliance landscape only accelerates.
Starting with reports submitted in 2027, Scope 1 and Scope 2 emissions reporting must undergo independent, third-party limited assurance reviews, meaning external auditors will scrutinize your data and test it for completeness, accuracy and lineage. The initial Scope 3 reporting also begins in 2027. CARB’s current proposal phases in five categories first: purchased goods and services, fuel- and energy-related activities, waste, business travel and employee commuting. For most, mapping the carbon footprint of purchased goods alone is an order of magnitude more difficult than measuring direct factory emissions, and later phases are expected to add categories like upstream logistics and product end-of-life.
Other states are following California’s lead. Most notably, New York’s Climate Corporate Data Accountability Act cleared the state Senate in February. The divergence of state rulebooks means you could soon be mapping the same operational dataset across multiple state-level digital registries, each with its own auditing and filing nuances.
Treat 2026 as a year to look the other way and you risk entering 2027 with unverified data, incomplete internal pipelines and no experience with independent assurance.
Why the burden lands hardest on industrial manufacturers
For an industrial manufacturer, Scope 1 and 2 emissions are often tied directly to heavy machinery, chemical processes, thermal energy systems and global distribution. And the data required for accurate reporting is notoriously messy and scattered:
- Siloed infrastructure: Data lives in disparate systems. For example, utility data sits in localized accounts payable departments, fleet diesel logs live with logistics managers, and facility expansion data is buried in resource planning software.
- Complex estimation assumptions: Manufacturing lines often run on combined utility meters, requiring engineering calculations to separate production-line energy use from general facility overhead. Every assumption must be formally documented and uniformly applied to withstand an audit.
- The assurance factor: When third-party assurance providers step in during 2027, they will require an unbroken, independent evidence trail from the raw source data (think: a physical meter reading or utility invoice) all the way to the final disclosure form.
If your organization’s strategy relies on a chaotic collection of Excel spreadsheets where data is copied, pasted and manually tweaked across departmental silos, your audit will likely fail. Spreadsheets lack a transparent data lineage and are highly vulnerable to human entry errors. (It doesn’t have to stay that way. Learn how Sauder Woodworking went from spreadsheets to audit-ready ESG reporting in 10 months.)
Use 2026 as a pressure test
Instead of viewing CARB’s enforcement discretion as an excuse to delay, forward-thinking companies are approaching 2026 as a unique, low-risk window to pressure-test their systems.
Think of the Nov. 10 deadline as an opportunity to run your data collection pipelines end to end, identify where your operational information breaks down, and refine your internal controls without the immediate threat of large regulatory fines.
By using this year to intentionally build an institutional-grade reporting foundation, you can achieve two important outcomes:
- You satisfy the definition of “good faith.” By capturing your raw data, formalizing your measurement methodologies and preserving a defensible evidence trail, you securely lock in the protections of CARB’s first-year discretion notice.
- You’re first in line in the audit capacity crunch. Qualified, independent third-party assurance providers are notoriously in short supply. By engaging with assurance workflows and establishing audit-ready practices in 2026, your team will be at the front of the line when capacity tightens next year.
How Tracera turns the deadline into an advantage
Navigating this compressed timeline across multiple, shifting state jurisdictions requires a fundamental transition from manual record-keeping to automation. This is precisely why Tracera exists, and why 85 percent of our customer base is manufacturers. Tracera serves as a centralized, cross-functional source of truth that unites finance, legal, procurement and sustainability teams under a single operational reality.
Tracera’s AI-powered document reading pulls data straight off energy bills, invoices and PDFs, processing as many as 1,300 documents in hours rather than days, and Scope 1 and 2 calculations that once took 25-plus manual hours run fully automated.
It is also built for the audit that follows. Tracera was developed alongside auditors from PwC, KPMG and Grant Thornton, and assurance providers can log in to verify your data lineage directly in the platform. Every Tracera client who has pursued limited assurance has achieved it. (See how Putzmeister built audit-ready data quality across 30-plus global locations.)
And rather than forcing your compliance teams to manually reformat data for every emerging state rulebook, Tracera takes your singular, real-world manufacturing dataset and automatically maps it across divergent frameworks. New regulatory frameworks go live in-platform in as little as five working days, so whether you are reporting under California SB 253 today or preparing for New York’s advancing framework tomorrow, the platform manages the cross-framework translation.
The clock is ticking
The federal retreat on climate rules has created a fragmented, state-driven landscape that caught many manufacturing organizations entirely by surprise. But the assumption that California’s first-year enforcement discretion grants a free pass until 2027 is incorrect. CARB’s leniency is conditional, and the agency plans to offer supplementary reporting guidance by Sept. 1, so the details will keep moving. Manufacturers must be actively building, documenting and retaining their emissions data today to remain protected.
Use the strategic window of 2026 to dismantle your data silos and move beyond the Excel chaos. Tracera onboards manufacturers in weeks instead of months, with full platform migrations, historical data intact, in as little as three weeks. Book a demo today.