On 19 April 2024 HKEX published its climate-disclosure consultation conclusions, writing IFRS S2 into Appendix C2 of the Listing Rules (the ESG Code) — making Hong Kong one of the first exchanges in the world to do so. The rules took effect 1 January 2025, but not uniformly: three issuer tiers, three different clocks. Misidentify your tier and you misread your deadline — this piece helps you place yourself.
What the new rules require
The new climate provisions follow IFRS S2's four pillars: governance (how the board and management oversee climate risk), strategy (climate-risk impact on the business model, transition plans, resilience analysis), risk management (identification and treatment of climate risks), and metrics & targets (Scope 1/2/3 emissions, industry metrics, internal carbon pricing, remuneration linkage). Scope 1+2 is the most concrete "numbers task" — LargeCaps already owe it for FY2025.
HKEX also issued implementation guidance (referencing IFRS S1) plus "reasonable information" and "capabilities/resources" relief provisions — issuers may disclose using reasonable information available at the reporting date rather than perfect data. A pragmatic design: if the regime demanded perfect data first, it would never start.
"Comply-or-explain" doesn't mean "optional"
Comply-or-explain reads lenient; practice is harsher. If you don't disclose you must state why — and "we lack the data" reads as a confession to investors. In an era when institutions build ESG into research, "we are unable to disclose" is itself a signal. The subtlety: voluntary on the surface, enforced by market discipline underneath.
Compliance checklist
- Locate yourself — are you a Hang Seng Composite LargeCap constituent? That determines your clock first
- Scope 1+2 data infrastructure — energy bills, electricity, owned fleets, refrigerant leakage — deliverable for FY2025
- Board accountability — is climate on the board agenda and committee terms of reference?
- Start scenario analysis — even the explain stage asks why you can't; safer to start trying
- Scope 3 groundwork — not yet mandatory, but supply-chain data takes time to accumulate — start talking to major suppliers now
Official sources
| Document | Issuer | Date |
|---|---|---|
| Climate disclosure consultation conclusions | HKEX | 2024.4.19 |
| Listing Rules amendments (Update No. 146) | HKEX | 2024.4 |
| New climate requirements — effective-date table | HKEX | 2024 |