The SEC's climate disclosure rule — formally titled "The Enhancement and Standardization of Climate-Related Disclosures for Investors," adopted March 6, 2024 under Release No. 33-11275 — creates mandatory GHG reporting obligations for US public companies for the first time. For sustainability managers and CFOs at mid-market publicly traded manufacturers, the rule is more tractable than the CSRD, but it has important differences from voluntary frameworks like TCFD that companies have been using, and its implementation timelines require data collection to begin now.
This post covers what the rule requires, which filer categories it applies to and when, and what a mid-market manufacturer actually needs to do to comply — without overstating either the burden or the simplicity.
Who Is In Scope and When
The SEC rule uses its existing registrant categories. The compliance schedule as adopted breaks down as follows:
Large Accelerated Filers (LAF): public float ≥ $700M. Scope 1 and 2 GHG disclosure required in annual reports for fiscal years beginning January 1, 2025 (i.e., first disclosure in the 10-K filed in early 2026). Financial statement footnote disclosure (climate-related risks in audited financials) required one year earlier. Scope 3 disclosure was removed from the final rule — LAFs are not required to disclose Scope 3.
Accelerated Filers (AF): public float $75M–$700M. Scope 1 and 2 GHG required for fiscal years beginning January 1, 2026. This is the category that captures most mid-market manufacturers — companies with revenues in the $150M–$600M range that are listed on US exchanges. The two-year lag from LAFs is intentional; you have time to build infrastructure, but not unlimited time.
Non-Accelerated Filers and Smaller Reporting Companies: The SEC exempted these categories from GHG disclosure requirements entirely in the final rule.
One critical note: the Scope 3 requirement was removed from the adopted rule after substantial comment. The proposed rule had included mandatory Scope 3 for LAFs; the final rule does not require Scope 3 from any registrant. However, companies are not prohibited from disclosing Scope 3, and if your company has made public commitments referencing Scope 3 targets, those commitments may still create disclosure obligations under the rule's "climate-related targets" section.
What Scope 1 and 2 Disclosure Actually Requires
For accelerated filers, the GHG disclosure requirement under Item 1502(e) of the final rule specifies:
- Gross Scope 1 GHG emissions in tCO2e, disaggregated by greenhouse gas (CO2, CH4, N2O, and any relevant F-gases)
- Gross Scope 2 GHG emissions in tCO2e, with both location-based and market-based calculation methods disclosed
- The organizational boundary methodology used (operational control, equity share, or financial control)
- The emission factors applied and their sources
- Any material changes in methodology between reporting periods
The rule requires disclosure of emissions using any methodology that is consistent with the GHG Protocol's Corporate Accounting and Reporting Standard or an "industry-specific, generally accepted" GHG accounting standard. GHG Protocol is the functional standard here.
The disclosure appears in the company's annual report on Form 10-K, within the climate-related disclosures section. It is subject to the same anti-fraud provisions as other 10-K disclosures under Section 10(b) of the Exchange Act and Rule 10b-5. That matters: these aren't just voluntary ESG disclosures where rough estimates are acceptable. They're auditable statements where a material misstatement creates legal exposure.
Limited Assurance: What It Means in Practice
LAFs face a limited assurance requirement for GHG disclosures phased in starting with fiscal year 2026 reporting. Accelerated filers have a longer runway before assurance requirements apply; the adopted rule provides AF filers with a phase-in period, with assurance requirements expected to follow once the Commission finalizes attestation standards.
Limited assurance is not an audit. Your assurance provider — which must be an independent, qualified GHG verification body — is providing negative assurance: "nothing has come to our attention that causes us to believe these disclosures are not prepared in accordance with the stated methodology." They review your methodology, check that your calculations are consistent with your source data, and verify that your emission factors are appropriate and current.
What this means for data infrastructure: your emission factors need to be traceable to published sources, your calculation model needs to be reproducible, and your source data (utility invoices, fuel purchase records, refrigerant log) needs to be preserved with timestamps. If you've been doing this in a spreadsheet, the question isn't whether the math is right — it's whether the provenance of every input is defensible under scrutiny.
The Scope 3 Question: What to Do Even Though It's Not Required
We want to address the Scope 3 situation directly, because there's been confusion in the market about what the rule means for Scope 3 planning.
The SEC's removal of mandatory Scope 3 from the final rule does not mean Scope 3 is unimportant for mid-market manufacturers. Several reasons it remains a practical priority:
Customer requirements will arrive before regulator requirements. If your largest customers are LAFs or European companies subject to CSRD, they will request your Scope 1 and 2 (as inputs to their Category 1 and Category 4 Scope 3 calculations) as part of their own compliance programs. These requests are arriving now and will intensify over the next two years.
If you've made public Scope 3 commitments, the rule still applies. Under Item 1502(f) of the final rule, companies that have adopted GHG reduction targets or goals that involve Scope 3 emissions must disclose progress against those targets. If your sustainability report contains a net-zero commitment that references value chain emissions, the SEC rule creates disclosure obligations about that commitment.
CSRD may reach you through your EU customers. If you supply goods to a company subject to CSRD (a European company or a US company with significant EU operations), their ESRS E1 disclosure will require them to report on supply chain emissions — which means they'll need your data. This is already creating pressure in automotive, industrial, and consumer goods supply chains.
We're not saying you need to build a full Scope 3 inventory by 2025 if you're not subject to CSRD. The point is: building your Scope 1 and 2 data infrastructure for SEC compliance creates the foundation for Scope 3 data collection when that pressure arrives.
A Mid-Market Manufacturer's Compliance Checklist
For an accelerated filer manufacturer — say, a precision machining company with $240M revenue, three US facilities, and a 10-K filing requirement — here's what the compliance path looks like:
Data collection baseline (start now): Pull historical utility invoices for all facilities for the most recent two calendar years. Establish source data storage with clear naming conventions and timestamps. Map fuel types to GHG Protocol emission categories. Confirm your organizational boundary and document it.
Methodology documentation: Write a one-to-two page methodology document describing: (1) organizational boundary approach, (2) emission categories included, (3) emission factors used and their sources, (4) calculation approach. This becomes the basis for your 10-K disclosure language and for future assurance reviews.
Emission factor selection: For Scope 1 natural gas combustion, use EPA Table C-1 emission factors from the GHG Reporting Program. For Scope 1 mobile combustion (company-owned vehicles), EPA's MOVES-derived factors or Table C-1 motor fuel emission factors. For Scope 2 location-based, EPA eGRID subregion factors by facility zip code. For Scope 2 market-based, utility residual mix factors from Green-e or equivalent registry.
Internal review process: Before your first 10-K disclosure, have your general counsel and external auditors review the disclosure language. GHG disclosures in a 10-K are subject to the same legal standards as financial disclosures. Imprecise language or unsupported claims create securities law exposure that your ESG report does not.
Anticipate year-over-year consistency questions. Once you establish a baseline year, material changes in reported emissions require explanation. If your Scope 1 jumps 30% from year one to year two, you need to be prepared to explain whether that reflects actual operational change, methodology change, or facility additions. This requires keeping detailed records of what drove changes, not just the final numbers.
What Stays Out of Scope
The SEC rule does not require:
- Climate scenario analysis or physical risk disclosure for non-LAF filers (TCFD-style physical/transition risk analysis was significantly scaled back in the final rule)
- Scope 3 GHG disclosure for any registrant
- Carbon offsets or credits disclosure, unless your company has made claims about reaching net-zero through offsets
- Disclosure of emissions reduction targets (unless you have set them; if you've set them, you must disclose them and report progress)
The final rule is meaningfully narrower than the proposed rule and narrower than CSRD. For an accelerated filer without EU operations or CSRD-scope customers, the immediate compliance task is: clean Scope 1 and Scope 2 data with full audit trail, accurate emission factors, and a methodology statement. That's achievable without a large-scale transformation of your data infrastructure — but it's not achievable the week before your 10-K filing deadline. The data collection work starts in the years before the first disclosure year.
For the specific fiscal year and exact filing timeline applicable to your company, consult your legal counsel and external auditors, as the phase-in rules interact with your fiscal year structure and registrant category in ways that require fact-specific review.
— Natasha Rivera, CEO & Co-Founder, Circulyft