Securing an officially validated SBTi target does not mean the work is over. It triggers a massive, legally binding regime of continuous public corporate surveillance. The SBTi aggressively monitors companies to ensure they do not quietly abandon their targets when the decarbonization math gets brutally difficult.
Mandatory Annual Public Surveillance (C25)
Criterion C25 violently mandates that every single approved company must publicly broadcast two things every single year:
- A completely updated, exhaustive GHG inventory.
- The exact, brutal mathematical progress against every single validated target.
This cannot be hidden in a private board deck. It must be brutally visible to the global public, investors, and activists.
Recommendation R12 heavily pushes companies to dump this massive dataset directly into the CDP (Carbon Disclosure Project). CDP serves as the ultimate global, highly structured, fully searchable database utilized heavily by institutional investors to hunt down corporate climate failures.
The 5% Recalculation Trigger (C27)
Because massive corporations constantly execute aggressive mergers, acquisitions, and divestitures, they easily distort their historical baseline math. Criterion C27 closes this evasion loophole.
If a defined trigger alters the base year footprint by a cumulative 5% or more, the company absolutely must execute a massive base year recalculation. It must rewrite its historical ledger to reflect the new corporate reality.
The Six Brutal Triggers:
- Scope 3 Explosion: Scope 3 gets updated and suddenly breaches the 40% mandatory threshold.
- Accounting Swaps: Changing the fundamental consolidation approach (e.g., from financial control to operational control).
- Boundary Shifts: Adding or dropping massive emission categories previously excluded.
- Structural M&A: Buying a massive dirty company or selling a massive clean one.
- Data Upgrades: Adopting vastly superior emission factors that expose previous math as wildly inaccurate.
- Catch-All: Any other massive shift exposing a 5% baseline distortion.
The M&A Mathematics
A massive global manufacturer locked its base year at 1,000,000 tCO2e. It then aggressively acquires a mid-sized rival adding 60,000 tCO2e.
60,000 / 1,000,000 = 6%.
Because 6% violently breaches the 5% threshold, the manufacturer must absolutely rewrite its entire historical base year to 1,060,000 tCO2e, ensuring all future progress is measured against the new, heavier combined entity.
The Mandatory 5-Year Overhaul (C26)
Targets absolutely cannot become obsolete legacy artifacts. Criterion C26 forcibly mandates a massive, exhaustive technical review of all approved targets at least every 5 years.
The company must aggressively rebuild its inventory under completely updated GHG rules, test its existing targets against the absolute latest (and invariably stricter) SBTi climate science, and mathematically prove the target is still valid. If the company fails, it must entirely overhaul and resubmit.
The 6-Month Announcement Mandate (C28)
Companies occasionally secure validation but then suspiciously delay publicizing the target because the required reductions look financially terrifying to shareholders.
Criterion C28 strictly terminates this exact tactic. A company has exactly 6 months from the moment of SBTi approval to loudly and publicly announce the targets to the world. Missing this incredibly hard deadline violently breaches the criteria and risks instant SBTi delisting.
Think of SBTi validation exactly like a commercial aviation maintenance schedule. You do not just pass the initial safety certification and fly the plane forever. You are legally bound to aggressive daily pre-flight checks (annual reporting), mandatory massive structural overhauls every five years, and immediate system recalibration if you bolt on new massive engines (M&A recalculation).
Key Takeaways
- 1Annual public disclosure of GHG inventory and target progress is mandatory for every validated company (C25) - CDP is the recommended reporting channel
- 2Six triggers can force base year recalculation: Scope 3 threshold breaches, accounting changes, boundary shifts, M&A activity, data upgrades, and any 5%+ baseline distortion (C27)
- 3All validated targets must undergo a full technical review every 5 years and be updated to the latest SBTi science (C26)
- 4Companies must publicly announce approved targets within 6 months of validation (C28) - missing this deadline risks delisting
- 5M&A transactions that shift the base year by 5% or more require rewriting the entire historical baseline to reflect the combined entity