Environmental Sustainability｜Greenhouse Gas Emission

Nuvoton has established a greenhouse gas (GHG) inventory mechanism in accordance with ISO 14064-1 standards and the guidelines of Taiwan's Environmental Protection Administration (EPA). Since 2009, NTC Taiwan has regularly conducted Scope 1 and Scope 2 GHG inventories based on ISO 14064-1 and obtained third-party verification. Starting in 2023, NTC Japan has also implemented the same practices to ensure the credibility and quality of inventory data and reporting.

In 2024, Nuvoton's total Scope 1+2 GHG emissions amounted to 125,439 tCO₂e, representing a reduction of 22,403 tCO₂e (16%) compared to 2023. Of this, direct emissions (Scope 1) from NTC Taiwan and NTC Japan totaled 56,228 tCO₂e, while indirect emissions (Scope 2) reached 67,385 tCO₂e. Subsidiaries contributed an additional 1,826 tCO₂e in Scope 1 + 2 emissions.

¹ All GHG data disclosed in this section are aligned with SBT target setting and calculated using GWP from IPCC AR6 (2021).

³ Note: Categories 10–12 in Scope 3 were added to support SBT target setting and have not yet undergone third-party verification. Verification is scheduled to begin in 2026. All other applicable categories have been verified by third parties.

⁴ Scope 3 emissions have been inventoried across all applicable categories under the GHG Protocol since 2023. For data prior to 2022, please refer to historical sustainability reports.

Nuvoton employs diverse and targeted strategies across different scopes to reduce carbon emissions:

• Scope 1: In Nuvoton Taiwan, over 90% of Scope 1 emissions stem from fluorinated GHGs (PFCs). The company has progressively implemented fluorinated gas treatment systems, achieving an 88% reduction rate by 2025. In Nuvoton Japan, the focus is on phasing out the gas-fired cogeneration system (CGS) system and replacing steam-powered absorption chillers with high-efficiency electric chillers to effectively reduce direct emissions.
• Scope 2: Scope 2 emissions primarily from purchased electricity. Nuvoton actively implements energy-saving and renewable energy initiatives to improve energy efficiency and reduce electricity consumption. In Nuvoton Taiwan, we have begun replacing energy-intensive equipment such as pumps, chillers, and high-vacuum generators, installed solar panels, introduced AI-controlled chiller systems, and launched a program to replace electric boilers with gas boilers. In Japan, Nuvoton has adopted high-efficiency heat exchangers for gas-fired cogeneration system (CGS) system, installed LED lighting, and procured energy-saving equipment including pumps, chillers, and air handling units. Nuvoton Japan also actively purchases offsite renewable electricity and obtains non-fossil fuel certificates.

• Scope 3: Nuvoton is committed to leading decarbonization efforts across its supply chain through carbon management, low-carbon transformation partnerships, third-party certification adoption, and green product innovation. The electricity consumption during the use phase of sold products (Category 11) is the largest contributor to Scope 3 emissions of Nuvoton. To address this, the company continues to develop green products by adopting advanced process technologies below 55nm and innovative packaging solutions to enhance chip performance and reduce energy consumption.

   

Reduction Target Setting Nuvoton follows the Science Based Targets initiative (SBTi) standards, committing to net-zero carbon emissions by 2050. The company submitted its 2030 targets to SBTi in October 2024 and received short-term target approval on March 28, 2025.

Carbon Reduction Targets and Net-Zero Commitment

Nuvoton (Global) Net Carbon Zero Pathway

Nuvoton Taiwan's Greenhouse Gas Reduction Project

Nuvoton Japan's Greenhouse Gas Reduction Project