TSMC’s Climate Strategy: Can the World’s Biggest Chipmaker Go Green?

Taiwan Semiconductor Manufacturing Co. (TSMC) is the world’s largest contract chipmaker, a company whose chips power everything from smartphones to data centres, representing roughly 28% of global semiconductor manufacturing revenue. This outsized footprint comes with equally large environmental impacts: chip fabrication is extremely energy and water-intensive, and in 2023 TSMC alone consumed about 8% of all electricity in Taiwan. As sustainability becomes a critical issue for the tech supply chain, TSMC’s actions have ripple effects across industries.

💡 In 2024, TSMC’s technology enabled an estimated 104.2 billion kWh in global energy savings, avoiding about 44 million tons of carbon emissions.

TSMC’s ESG Governance & Strategy

Sustainability at TSMC is driven from the top. The company’s CEO and Chairman, C.C. Wei, chairs an ESG Steering Committee, and Senior VP Lora Ho leads an internal ESG Committee. TSMC’s approach centres on five ESG focus areas (“five ESG directions”): green manufacturing, responsible supply chain, inclusive workplace, talent development, and community care. For 2024, TSMC reported strong performance in both financial and sustainability metrics, suggesting that its growth and ESG progress can go hand-in-hand. The firm generated NT$2.95 trillion (US$~88 billion) in revenue with record profits, while also achieving top rankings in global sustainability indices like the Dow Jones Sustainability Index (DJSI) and MSCI ESG ratings. All key suppliers underwent ESG audits in 2024, indicating a comprehensive approach to governance that extends beyond TSMC’s own facilities.

Environmental Action & Performance

TSMC’s 2024 report devotes significant attention to environmental action and performance, reflecting the semiconductor industry’s resource-intensive nature. The company’s environmental strategy focuses on climate and energy, water and resource efficiency, and pollution control. In 2024 TSMC made measurable progress in each of these areas, though challenges remain to hit its long-term goals.

Energy & Carbon

Combatting climate change is a centrepiece of TSMC’s sustainability efforts. The company has pledged to reach net-zero emissions by 2050 and is aligning with the Science Based Targets initiative (SBTi) to set near-term greenhouse gas reduction goals. Currently, TSMC’s operational emissions are dominated by its manufacturing processes (Scope 1, primarily perfluorinated process gases) and electricity use (Scope 2), which together account for over 80% of its carbon footprint. Upstream Scope 3 emissions from materials, equipment, and other suppliers make up much of the rest (TSMC estimates roughly 24% of its total emissions come from suppliers in its value chain).

Operating huge chip fabrication plants (“fabs”) is energy intensive, so improving energy efficiency and cutting carbon emissions are top priorities. TSMC implemented 1,177 energy-saving projects across its facilities in 2024, from equipment optimizations to process improvements, yielding 810 GWh in annual electricity savings.TSMC also increased its use of renewable energy to about 13% of total electricity in 2024. It has aggressive targets to raise that share to 60% by 2030, on a path to reach 100% renewable power by 2040 (pulling forward its original 2050 RE100 timeline by a decade). The company is already one of the largest buyers of green power in Asia, procuring large volumes of renewable energy via contracts and certificates, and plans to invest further in solar and wind projects to meet these goals.

TSMC’s climate strategy extends to cutting direct emissions as well. It utilizes advanced abatement systems and offsets to reduce greenhouse gases used in production. Notably, by 2024 TSMC had effectively neutralized its Scope 1 CO₂ emissions from operations by using carbon credits (purchasing ~234,000 tons’ worth to offset process emissions). Thanks to ongoing upgrades in equipment, emissions of fluorinated greenhouse gases (like PFCs used in etching) have been reduced by 96% from baseline levels through capture and treatment technologies.

💡 TSMC has set a target to source 60% of its electricity from renewable energy by 2030 (up from 13% in 2024), on the way to 100% green power by 2040.

Water & Resource Efficiency

Semiconductor manufacturing is highly water-intensive, so TSMC has made water stewardship a priority under its “practitioner of green power” role. The company has set a goal to become “water positive” by 2040, meaning it intends to eventually return more water to the environment than it withdraws, through conservation and reuse initiatives. In 2024, TSMC’s water-saving measures yielded a 2.7% reduction in water consumption per unit of production, marking progress toward that long-term goal. The company has invested heavily in reclaiming and reusing water within its fabs: last year TSMC used about 19.65 million cubic meters of reclaimed water, supplying part of its operations with treated wastewater instead of fresh sources. New fabrication plants are being built with infrastructure to use 100% reclaimed water for their process needs (for instance, the new Fab 20 and 22 facilities will rely on recycled water).

Resource circularity is another focus. In 2024, TSMC launched a dedicated Zero Waste Manufacturing Centre to drive waste reduction and recycling efforts. As a result, the company achieved a 97% waste recycling rate across its global operations. Over 9,400 metric tons of manufacturing waste were reclaimed and converted into usable materials in the past year, ranging from recycled solvents and acids to metals recovered for reuse. TSMC also introduced a new Sustainable Raw Material Policy that encourages using more recycled and renewable materials in production and packaging.

Hazardous Chemicals & Air Pollution

TSMC’s report highlights efforts to eliminate hazardous chemicals and reduce air pollution from its operations. A notable milestone in 2024 was the phase-out of N-methylpyrrolidone (NMP), a toxic solvent widely used in chipmaking from key production processes. By the end of 2024, TSMC achieved 100% elimination of NMP in all etching and cleaning processes at its overseas fabs, exceeding its annual target and improving safety. The company is now working to extend this green chemistry success to its fabs in Taiwan as well.

TSMC has also invested in cutting emissions of volatile organic compounds (VOCs), which are air pollutants generated by some fabrication processes. Through upgraded exhaust treatment systems (such as thermal oxidizers and scrubbers), TSMC reports a 99% reduction in VOC emissions compared to previous levels, significantly improving air quality around its facilities. Similarly, advanced abatement equipment is tackling process emissions that contribute to climate change and smog. For instance, nitrous oxide (N₂O), a potent greenhouse gas emitted by certain process tools has been reduced by 90% through equipment optimizations and gas capture technologies. Meanwhile, the fluorinated process gases (PFCs and others) that remain essential to semiconductor etching are being decomposed or captured at a 96% efficiency rate as noted earlier.

💡 TSMC’s global operations recycled 97% of all waste generated in 2024 roughly 9,400 metric tons of material were reclaimed for reuse instead of disposal.

Supply Chain & Procurement

TSMC’s sustainability commitments extend beyond its own fabs to its vast network of suppliers. In 2024, the company strengthened both requirements and incentives for suppliers to adopt greener practices and cut carbon emissions. It rolled out a “T.S.M.C. Supply Chain Carbon Reduction Strategy”, a roadmap to help suppliers decarbonize and launched a subsidy program to co-finance emissions-cutting projects at key suppliers. Under this program, TSMC is investing NT$5.5 billion (about US$170 million) to support supplier upgrades such as energy-efficient equipment, with the aim of accelerating carbon reductions upstream. TSMC has also started integrating climate performance into its procurement decisions: suppliers’ carbon reduction results are now part of supplier evaluations and contract awards.

The scale of the challenge and opportunity is significant. Suppliers account for roughly one-quarter of TSMC’s overall greenhouse emissions. TSMC has set targets for its supply chain partners to collectively save 1,500 GWh of electricity by 2030 through efficiency improvements, which would eliminate a substantial amount of indirect CO₂ emissions. Major equipment manufacturers that sell chipmaking tools to TSMC are also being pushed to improve the energy efficiency of next-generation equipment by at least 20% by 2030, reducing the power needed to operate those tools. In addition, TSMC’s new Sustainable Raw Material Policy (noted above) encourages procurement of recycled and lower-impact materials to shrink the carbon and resource footprint of inputs like wafers, chemicals, and gases.

💡 TSMC introduced a supplier carbon reduction subsidy program that spurred NT$5.5 billion in green investments by its suppliers, directly targeting reductions in upstream emissions.

Progress & Gaps

TSMC’s 2024 report showcases notable progress, but it also candidly identifies areas where challenges remain. On the positive side, the company is clearly moving the needle on resource efficiency (with high waste recycling and water reuse rates) and has set ambitious climate targets. However, one of the biggest hurdles is the limited availability of renewable energy in Taiwan, where TSMC’s operations are concentrated. As of 2024, around 83% of Taiwan’s grid electricity comes from fossil fuels. TSMC has been relying heavily on purchasing renewable energy certificates (RECs) to boost its green energy share; in fact, it buys more than half of all renewable power currently available in Taiwan. Achieving 60% renewable electricity by 2030 will require either a major scale-up of Taiwan’s renewable capacity or TSMC directly investing in new clean power projects (such as offshore wind farms or large-scale solar) to secure its own supply.

Another gap lies in TSMC’s upstream emissions and supply chain dependencies. Even as the firm works to shrink its direct emissions, a significant portion of its carbon footprint comes from the manufacturing of materials and equipment it buys. If critical suppliers fail to meet their carbon reduction targets or if cleaner alternatives for high-emission inputs (like certain speciality gases or raw wafers) don’t materialise, TSMC could struggle to reduce its Scope 3 emissions.

Industry & Market Context

TSMC’s sustainability push comes amid increasing pressure across the semiconductor industry from both customers and regulators. Large tech clients are imposing stringent climate requirements on their chip suppliers. Notably, Apple, which is TSMC’s biggest customer, accounting for over a quarter of its sales, has mandated that its supply chain use 100% renewable electricity and reach carbon neutrality for Apple-related production by 2030. This puts TSMC on the clock: even if it meets its own goal of 60% renewables by 2030, it would still fall short of Apple’s expectations. Other major customers, as well as cloud service providers and automakers, are likely to apply similar pressure as they pursue their own net-zero targets.

Industry peers are also ratcheting up sustainability commitments, which frames the competitive context. For example, Intel has pledged to reach net-zero GHG emissions in its operations by 2040 and aims for 100% renewable power by 2030, a decade ahead of TSMC’s current renewable timeline. Samsung has announced net-zero goals for its semiconductor division by 2050 and is investing in measures like process gas capture, waste heat recovery, and renewable energy procurement to get there. In addition, government policies are beginning to bite: Taiwan’s new climate law will impose a carbon fee on large emitters starting in 2025, and internationally, mechanisms like the EU’s carbon border adjustment could penalise carbon-intensive semiconductor production in the future.

Outlook & Takeaways

TSMC’s 2024 Sustainability Report paints a picture of a company making significant strides in greening its operations and supply chain, yet facing the steep challenge of aligning its growth with global climate imperatives. The next few years will be crucial. By 2025, TSMC aims to plateau its emissions and then start a downward trajectory. Hitting its 2030 interim goals, such as 60% renewable energy, a return to 2020-level emissions, and substantial supplier energy savings, will require relentless execution and likely some course corrections if external conditions (like Taiwan’s energy mix) don’t improve fast enough. The company’s commitment to propose an SBTi-approved carbon reduction pathway by 2026 indicates that more concrete targets are on the horizon, which will further clarify its decarbonization roadmap.

For global sustainability professionals, the broader implication is that the semiconductor industry is entering a new phase where ESG performance is as critical as technological innovation. TSMC’s initiatives, from massive renewable energy purchases to co-investing in suppliers’ carbon reductions, could become standard practice as chipmakers respond to climate change and resource constraints. Conversely, any shortcomings (for instance, if TSMC or its suppliers struggle to meet key targets) will be closely scrutinised and could prompt stronger regulatory interventions or drive customers to favour greener production elsewhere. In an industry defined by pushing the limits of science, the drive toward net-zero emissions is emerging as the next big innovation challenge. TSMC’s 2024 report shows the world’s leading chip manufacturer is taking that challenge seriously. Its success or failure will not only shape TSMC’s own future but also set a benchmark for sustainability in high-tech manufacturing in the years ahead.

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