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What the Disclosures Reveal—and What They Leave Out.
TSMC has released its 2024 Sustainability Report (276 pages) covering environmental, social, and governance (ESG) performance across its global operations. The report reflects the scale of the world’s largest semiconductor foundry: significant progress in environmental management, structured governance systems, and ambitious long-term targets. At the same time, there are clear disclosure gaps — especially in areas regulators and investors increasingly demand.
Below, we break down what TSMC disclosed, what remains unclear, and what is missing.
Environmental:
Strong Operational Discipline, Partial Transparency
Confirmed in Report
- Carbon & Energy: TSMC disclosed Scope 1, 2, and 3 emissions (p. 86). Scope 1 and 2 rose in absolute terms with fab expansion, but renewable energy procurement increased. The company reaffirmed its RE100 commitment, targeting 100% renewable energy by 2050 (pp. 90–95).
- Water Management: Detailed data show water conservation, recycling, and “water production rate” improvements. In 2024, wastewater recycling exceeded 140 million cubic meters, and water reclamation systems reduced freshwater dependency (pp. 96–101).
- Waste & Circularity: Recycling rates remain above 95%, with landfill disposal below 1% for a tenth consecutive year (pp. 102–103).
Uncertain or Unsupported
- Scope 3 Detail: While TSMC reports a total Scope 3 footprint (p. 86) and outlines value-chain decarbonization initiatives (pp. 84–87), the disclosure is not broken into the 14 standard categories (e.g., purchased goods, upstream transport) required under the EU’s CSRD.
- Carbon Hand-Print: TSMC highlights that its technologies help customers avoid ~59 Mt CO₂ (pp. 88–89). However, methodology and alignment with regulatory taxonomies are not specified.
Missing
- Per-Unit Intensity Metrics: Absolute emissions, water use, and waste are disclosed, but not consistently normalised (e.g., CO₂ per wafer). This limits comparability across output growth.
EU Taxonomy Mapping: CapEx alignment with EU Taxonomy criteria is referenced but not disclosed in detail (pp. 92–93).
Social:
Expansive in Scope, Selective in Depth
Confirmed in Report
- Workforce Composition: Women account for ~39% of employees, and TSMC highlights programs to promote inclusion, talent development, and leadership pathways (pp. 126–128).
Health & Safety: Occupational safety metrics are detailed, including Lost-Time Injury Rate (LTIR) and third-party certifications (pp. 138–142). Mental health and wellness initiatives are also reported.
- Human Rights: The company adopts the RBA Code of Conduct and conducts annual human rights risk surveys with mitigation plans (pp. 118–120).
Uncertain or Unsupported
- Diversity Beyond Gender: The report focuses heavily on gender, but offers limited disclosure on other diversity dimensions (race, nationality, underrepresented groups).
- Talent Retention: Hiring scale is described, but turnover data and leadership progression metrics are less clear.
Missing
- Pay Equity Data: No disclosure of adjusted or unadjusted gender pay gaps by geography or job function (pp. 126–130).
- Regional Workforce Metrics: No regional breakdown of turnover, discrimination incidents, or pay equity.
Supply Chain:
Structured Framework, Opaque Execution
Confirmed in Report
- Supplier Engagement: TSMC works with ~1,400 tier-1 suppliers. It requires compliance with ESG standards, conducts self-assessment questionnaires (SAQs), and hosts forums and workshops (pp. 113–118).
- Standards Adoption: Supplier requirements align with the Responsible Business Alliance Code, ISO certifications, and human rights principles (pp. 113–114).
Uncertain or Unsupported
- Audit Coverage: The report states that suppliers are audited and trained, but the percentage of suppliers audited annually — and the depth of those audits — is not disclosed (pp. 116–118).
- Tier-2 Visibility: Engagement beyond tier-1 suppliers is mentioned but not quantified.
Missing
- Audit Outcomes: No public disclosure of findings, corrective actions, or timelines from supplier audits.
- High-Risk Sourcing: No detailed reporting on human rights assessments in high-risk regions or raw materials sourcing.
Governance:
Structured Oversight, Disclosure Gaps
Confirmed in Report
- Governance Structures: ESG Steering Committee, chaired by top management, reports quarterly to the Board. Integration of ESG into enterprise risk management is described (pp. 36–38).
- Stakeholder Engagement: Mechanisms include employee surveys, grievance channels, ombudsman offices, and supplier/customer dialogues (pp. 44–46).
Uncertain or Unsupported
- Target Costs & Trade-Offs: Net-zero by 2050 and interim renewable targets are ambitious, but cost implications and near-term trade-offs are not quantified (pp. 88–90).
Missing
- Regional Governance Risks: While global operations are expanding, the report does not detail region-specific governance challenges or regulatory exposures.
TSMC 2024 Sustainability Report: Disclosure Audit
Confirmed in Report | Uncertain / Unsupported | Missing / Omitted |
|---|---|---|
High waste recycling rate (>95%) sustained, landfill rate <1% for multiple years. | Supplier audits disclosed: 70 of 1,429 tier-1 suppliers (~5%) audited. Audit depth, outcomes, and tier-2 coverage remain unclear. | Full Scope-3 emissions breakdown across CSRD’s 14 categories (only a headline number disclosed). |
Strong water stewardship: conservation, wastewater recycling, water production rate improvements; detailed year-on-year metrics. | Scope-3 “value chain decarbonisation” initiatives described, but actual reduction results not disaggregated. | Gender pay gap data (adjusted or unadjusted), by role or geography. |
Renewable energy goals and transition plans (e.g., RE100 membership, renewable PPAs). | “End-user CO₂ avoided” metric (~59 Mt) reported, but methodology and regulatory acceptance are not disclosed. | Supplier audit results, corrective action rates, and timelines. |
ESG governance structures: ESG Committee, ESG Steering Committee, quarterly reporting to the Board. | Alignment of CapEx with EU Taxonomy is partially described but not mapped to full taxonomy categories. | Diversity data beyond gender (race, nationality, under-represented groups). |
Employee health, safety, and well-being programs (mental health support, workplace safety performance). | Female workforce share (~39%) reported, but retention rates and leadership pipeline by gender not fully explained. | Regional breakdown of key workforce metrics (turnover, pay equity, discrimination incidents). |
Adoption of global standards: ISO 14001/45001, RBA Code of Conduct, third-party certifications. | Multi-year targets (net-zero, renewable share) are ambitious, but interim trade-offs and cost implications not quantified. | Clear per-unit intensity metrics (e.g., CO₂ per wafer, water use per wafer) consistently tracked. |
Stakeholder engagement processes: surveys, forums, grievance channels, ombudsman mechanisms. | --- | Detailed disclosure of human rights assessments in high-risk geographies (tier-2+ suppliers, raw materials sourcing). |
Overall Assessment
TSMC’s FY24 report confirms strong operational discipline in environmental management and robust governance structures. Disclosure is consistent in areas like water, waste, energy, and safety. But regulatory alignment remains partial.
Scope-3 detail is absent where regulators increasingly demand granularity.
Pay equity and workforce transparency are limited.
Supplier audit coverage is disclosed (70 of 1,429 suppliers), but the outcomes, severity of findings, and corrective actions remain opaque.
Per-unit intensity metrics are missing, making it difficult to judge efficiency gains relative to fab expansion.
CapEx is not mapped to EU Taxonomy categories.
Avoided-emissions accounting risks overstating sustainability impact – TSMC discloses “59 Mt CO₂ avoided by end-use efficiency” (p. 101), but this metric is not standardised under CSRD/SFDR.
TSMC demonstrates operational strength but disclosure depth lags evolving EU standards. With CSRD and SFDR Article 8 shifting from voluntary frameworks to binding compliance in FY25, omissions that today read as narrative gaps could soon be tested as compliance risks.
Summary Tables
Gaps vs. EU standards (CSRD / ESRS)
| ESRS topic | TSMC 2024 shortfall | Severity |
|---|---|---|
E1 (Climate) – Scope 3 category split (upstream/downstream) | Only a consolidated Scope-3 total disclosed; no breakdown by ESRS/CSRD categories or supplier-level intensities. (Full Scope 3 breakdown is mandatory under CSRD). | HIGH |
E4 (Biodiversity) – KPIs on sites in protected / high-value areas | No site-level biodiversity risk / protected-area table in the report. | LOW |
S1 (Own workforce) – Gender pay-gap ratio | Reports % female (≈39%) but no unadjusted or adjusted gender pay-gap metrics by role/geography. (Pay equity disclosure is a required metric under ESRS) | HIGH |
S2 (Value-chain workers) – % suppliers audited against RBA/RBC standards | 100% supplier signatory/acceptance reported, and audits described; % audited vs. total suppliers and audit outcomes not reported. | HIGH |
G1 (Governance) – Taxonomy-aligned CapEx / activity mapping | Green initiatives and sustainable CapEx described, but no detailed mapping of CapEx/revenue to EU Taxonomy categories. | HIGH |
Gaps vs. US expectations (SEC proposal & IRA)
| US topic | TSMC 2024 shortfall | Severity |
|---|---|---|
SEC climate disclosure (proposed rules) – Scope 3 intensity & assurance | Scope-3 headline disclosed, but no normalised intensity per unit revenue/output and only limited assurance on GHG disclosures (no reasonable assurance). | HIGH |
GHG intensity (e.g., $/wafer or tCO₂/wafer) | Not published / not normalised to unit output in the report. | MEDIUM |
Transition plan & offsets – 1.5 °C alignment & capex sequencing | Net-zero/long-term targets disclosed; however, no published 1.5 °C-aligned capital-expenditure sequencing or detailed offset methodology in the FY24 report. | HIGH |
IRA credits (45V/45X) – eligibility table | No explicit disclosure mapping fabs/projects to potential IRA credit eligibility (e.g., for clean hydrogen / advanced manufacturing credits). | LOW |
Gaps vs. UN PRI
| PRI indicator | TSMC 2024 shortfall | Severity |
|---|---|---|
Governance – 1.1 Board ESG expertise | Board composition disclosed, but the published skills matrix does not explicitly list climate or biodiversity expertise. | MEDIUM |
Climate – 5.1 TCFD / target alignment | TCFD-style disclosures present; no explicit executive remuneration linked to a 1.5 °C-aligned target shown. | HIGH |
Human rights – 7.1 UNGP salient risks | Human-rights risk assessments and RBA adoption described, but no consolidated table of salient human-rights risks in the supply chain is provided. | HIGH |
Gaps vs. Taiwan regulators (TWSE / FSC)
| Taiwan rule | TSMC 2024 shortfall | Severity |
|---|---|---|
Sustainability Information – Compilation Guidelines Art. 6 – independent assurance of GHG | Only limited assurance by DNV; no reasonable assurance | MEDIUM |
Board diversity – female independent directors | 4/15 = 27 % female, but only 1 female independent (7 %) | LOW |
Supplier human-rights grievance mechanism – % grievances resolved | Grievance channel exists, but zero quantitative outcome data | MEDIUM |
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