Compliance ≠ Disclosure ≠ Draft Guides: Keep Three Evidence Trails After the National ETS’s 10-Billion-Tonne Milestone

Key point: After the 21 October 2026 MEE briefing that the national ETS has crossed 10亿吨 of cumulative allowance turnover, boards of H-share / red-chip / A+H groups with mainland ETS entities need three evidence trails that look related but are not interchangeable: (1) ETS compliance (2025 allowance surrender by 31 Dec 2026); (2) HKEX Part D disclosure (HSCLI mandatory climate disclosures for FY commencing on/after 1 Jan 2026); (3) mainland climate-guide monitoring (MOF application + nine industry guides, comments closed 26 Oct 2026, still 征求意见稿, not 印发). Build one three-trail board pack co-owned by finance, sustainability and company secretary: separate compliance evidence, Part D narrative, and draft-guide monitoring.

On 21 October 2026, at a State Council Information Office press conference, Li Gao, Vice Minister of the Ministry of Ecology and Environment (MEE), summarised China’s climate policy posture ahead of the UN Climate Change Conference. On the national emissions trading system (ETS), he said the market now covers about 83亿吨 of carbon dioxide, more than 65% of national CO2 emissions. In the previous week, cumulative allowance turnover had crossed 10亿吨. The previous day’s closing price was 98.11 yuan per tonne, more than 100% above the 2021 launch-day price. The briefing also released the China’s Policies and Actions for Addressing Climate Change 2026 Annual Report, and noted that COP31 will run from 9 to 20 November 2026 in Antalya, with Hong Kong and Macao joining the China delegation.

For boards of H-share, red-chip and A+H groups that own mainland ETS entities, that milestone is real. It is not a single compliance stamp for Hong Kong disclosure. Three evidence trails continue to run on separate calendars, with different owners and different evidence standards. Treating them as one story is the recurring control failure we see in year-end packs.

Our view: After the 21 October 2026 MEE briefing that the national ETS has crossed 10亿吨 of cumulative allowance turnover, boards of H-share / red-chip / A+H groups with mainland ETS entities need three evidence trails that look related but are not interchangeable: (1) ETS compliance (2025 allowance surrender by 31 Dec 2026); (2) HKEX Part D disclosure (HSCLI mandatory climate disclosures for FY commencing on/after 1 Jan 2026); (3) mainland climate-guide monitoring (MOF application + nine industry guides, comments closed 26 Oct 2026, still 征求意见稿, not 印发). Build one three-trail board pack co-owned by finance, sustainability and company secretary: separate compliance evidence, Part D narrative, and draft-guide monitoring. Never treat CEA surrender as proof that Part D Scope 1/2 and financial-effects wording are complete; never paste draft MOF guide language into a Hong Kong ESG report as if it were final text; never wait for mainland guide finalisation to finish Part D measurement.

Evidence trail 1: ETS compliance is still a calendar of deeds

MEE’s notice on national ETS work for 2026 (生态环境部办公厅, 27 January 2026) keeps the operational spine clear for generation, steel, cement and aluminium smelting. Provincial authorities were to publish the 2027 key emitting-unit lists for those four sectors by 31 October 2026, using the 2.6万吨 CO2e annual direct-emissions threshold. For the 2025 compliance year, key emitting units must complete allowance surrender by 31 December 2026. Data-quality, verification and allocation dates sit earlier on the same notice; the surrender deadline is the one that still sits in front of most covered entities as this article is written.

That trail produces evidence of a particular kind: verified emissions for the compliance year, allocated and purchased China Emission Allowances (CEA), any permitted CCER offset within the rules then in force, and a completed surrender record on the national registry. Finance and the mainland environmental-compliance function own that trail. It answers the question whether the covered entity met its ETS legal obligation. It does not, by itself, answer how the Hong Kong listed parent will describe Scope 1 and Scope 2 boundaries, measurement approaches, climate-related financial effects or targets under Part D of the ESG Reporting Code.

Boards that treat a clean surrender certificate as the close of the climate chapter usually discover the gap in IR Q&A: investors ask for group Scope figures and financial-effects language that the CEA file never contained. The reverse error is equally common. Strong group Scope 1 and 2 tables do not prove that every mainland key emitting unit has finished 2025 surrender. The two trails must both be green; neither substitutes for the other.

Evidence trail 2: Part D runs on the Hong Kong listing calendar

Part D of the ESG Reporting Code remains the disclosure spine for Hong Kong issuers. For financial years commencing on or after 1 January 2025, all listed issuers must disclose Scope 1 and Scope 2 greenhouse gas emissions on a mandatory basis. Main Board issuers report the broader Part D climate requirements on a comply-or-explain basis; GEM issuers treat those broader requirements as voluntary. For financial years commencing on or after 1 January 2026, Hang Seng Composite LargeCap Index (HSCLI) constituents report Part D on a mandatory basis. FAQ Series 17.2 (April 2026) confirms that the first HSCLI mandatory cohort is issuers that were HSCLI constituents throughout their entire financial year commencing on or after 1 January 2025; those FY 2026 ESG reports will typically be published in 2027. Newly added constituents become subject only after remaining in the index for a full financial year.

Nothing in the 21 October MEE briefing, and nothing in the still-draft MOF application guides, amends that Part D timetable. National ETS market size is relevant context for transition risk and carbon-price narrative. It is not a relief from Scope measurement, governance disclosure, scenario analysis where required, or financial-effects wording. Where FAQ 17.2 and the Code allow qualitative financial-effects disclosure under specified reliefs, boards should use those reliefs deliberately and explain them. They should not invent a new relief from carbon-market headlines.

For A+H and red-chip groups, the practical stuck point is boundary discipline. Mainland ETS coverage follows sector and threshold rules that may not match the consolidated reporting boundary used in the Hong Kong ESG report. A plant that is a key emitting unit for CEA purposes may be only one line in a larger Scope inventory. A group entity outside the four covered sectors may still sit inside Part D Scope 1 and 2. The company secretary and disclosure committee need a map that says, for each material entity: ETS status, Scope category, data owner, assurance status, and which sentence in the ESG report that number supports.

Evidence trail 3: MOF guides are closed for comment, not final

On 28 September 2026 the Ministry of Finance General Office issued 财办会〔2026〕34号, seeking comments on the application guide to Enterprise Sustainability Disclosure Standard No. 1: Climate (Trial) (财会〔2025〕34号) and on nine industry application guides covering power, steel, coal, petroleum, fertiliser, aluminium, hydrogen, cement and automobiles. Comments were due by 26 October 2026. As of 2 November 2026, the Accounting Department working-notice list on kjs.mof.gov.cn still shows the consultation package as a 征求意见稿. We find no formal 印发 or final text on that page. The Climate Standard itself exists and remains voluntary until a later instrument specifies scope and timing. That status must stay accurate in any board brief.

This is the trail issuers most often mishandle. Some teams wait for final industry guides before finishing Part D measurement for FY 2025 or FY 2026. That wait is not supported by Hong Kong rules. Others lift draft guide wording into ESG report text as if the Ministry had already finalised sector methods. That creates a different risk: stating a mainland method that may still change, while presenting it to Hong Kong investors as settled practice. The useful posture is monitoring, gap-mapping and dual-track drafting. Note where a draft industry guide would tighten or reclassify a metric your group already discloses; keep a change log; do not publish draft text as final.

A short bridge to Hong Kong sustainable-finance work is enough. On 28 October 2026, Arthur Yuen, Deputy Chief Executive of the Hong Kong Monetary Authority, told the One Earth Summit that the Hong Kong Taxonomy Phase 2B prototype covers 39 mitigation activities and 28 adaptation measures, and that bank transition-planning guidelines had just been finalised. That matters for lenders and for issuers that borrow against transition plans. It does not rewrite Part D, and it does not finalise the MOF guides.

One pack, three evidence trails

The artefact that keeps the lines honest is a three-trail board pack. It is an internal control document, not a published chapter. Finance owns CEA positions, surrender status and carbon-cost P&L bridges. Sustainability owns Scope inventories, measurement methods, targets and the climate narrative that Part D requires. The company secretary or disclosure committee owns Listing Rules timing, HSCLI status, FAQ 17.2 relief elections and the sentence-level bridge into the ESG report and results announcement. All three sign the same pack before the board or sustainability committee meeting that clears year-end disclosure.

Three hard rules follow from the table. Never treat CEA surrender as proof that Part D Scope 1/2 and financial-effects wording are complete. Never paste draft MOF guide language into a Hong Kong ESG report as if it were final text. Never wait for mainland guide finalisation to finish Part D measurement. The 10亿吨 turnover headline is useful for market context and for explaining why carbon price and liquidity deserve board attention. It is not a fourth evidence trail, and it does not merge the first three.

Key dates

21 October 2026: MEE / State Council Information Office briefing; national ETS cumulative allowance turnover exceeded 10亿吨; coverage about 83亿吨 CO2 (65%+ of national CO2); 2026 annual climate-action report released. 26 October 2026: MOF comments closed on climate application guide + nine industry guides (财办会〔2026〕34号); still 征求意见稿 as of 2 November 2026. 28 October 2026: HKMA One Earth Summit remarks on Taxonomy Phase 2B prototype (39 mitigation / 28 adaptation) and finalised bank transition-planning guidelines. 31 October 2026: Provincial deadline to publish 2027 ETS key emitting-unit lists (generation, steel, cement, aluminium; 2.6万吨 CO2e threshold). 9 to 20 November 2026: COP31, Antalya. 31 December 2026: 2025 CEA surrender deadline. FY commencing on/after 1 January 2025: Scope 1+2 mandatory for all HKEX issuers; Main Board broader Part D on comply-or-explain. FY commencing on/after 1 January 2026: HSCLI constituents mandatory Part D (reports typically published 2027).

FAQs

1. Does completing 2025 CEA surrender mean Part D climate disclosure is finished? No. Allowance surrender under the national ETS shows that a covered entity met its mainland compliance obligation for the 2025 compliance year by the 31 December 2026 deadline. Part D still requires Scope 1 and Scope 2 disclosure for all issuers for financial years commencing on or after 1 January 2025, and broader climate disclosures on the timetable that applies to Main Board, GEM or HSCLI status. Surrender evidence and disclosure evidence answer different questions.

2. Are the MOF climate application guides already final? No. 财办会〔2026〕34号 circulated the application guide and nine industry guides as 征求意见稿, with comments due by 26 October 2026. As of 2 November 2026, the Ministry of Finance Accounting Department working-notice list still presents that package as a consultation draft. Boards should monitor for formal 印发 and must not treat draft wording as final Hong Kong disclosure text.

3. When do HSCLI constituents face mandatory Part D? For financial years commencing on or after 1 January 2026, HSCLI constituents must report Part D climate requirements on a mandatory basis. FAQ Series 17.2 (April 2026) states that the requirement applies to issuers that were HSCLI constituents throughout the entire financial year immediately before the reporting year. For those FY 2026 reports, publication typically falls in 2027.

4. Should boards wait for the MOF industry guides before measuring Scope 1 and 2 for Part D? No. Hong Kong Part D measurement obligations run on the Listing Rules calendar regardless of whether mainland application guides remain in draft. Waiting for 印发 delays evidence that investors and the Exchange already expect. Use the draft guides for gap-mapping and change logs only until a final instrument is issued.

5. What belongs in a three-trail board pack? At minimum: ETS entity list and 2025 surrender status; group Scope 1/2 inventory with boundary notes against ETS coverage; Part D drafting status and any FAQ 17.2 relief elections; HSCLI / Main Board / GEM track; MOF guide monitoring log (draft versus final); and named owners in finance, sustainability and company secretary. The pack is for board or committee clearance, not for publication as a chapter.

Conclusion

The national ETS crossing 10亿吨 of cumulative allowance turnover is a genuine market milestone. For Hong Kong-listed groups with mainland covered entities, the useful board response is not a single celebratory paragraph. It is a three-trail board pack that keeps ETS surrender, Part D disclosure and mainland draft-guide monitoring on separate evidence trails, with shared ownership across finance, sustainability and the company secretary. Compliance, disclosure and standard-setting will continue to move on separate calendars. Boards that keep those calendars distinct will file cleaner reports and face fewer IR contradictions when the next carbon-market headline arrives.

Edited / written by: Amanda Cheung, Founder, AMMO Group