Environmental Sustainability|Energy Management
Nuvoton actively reduce the environmental impact of our business operations by investing in innovative technologies and initiating layouts for renewable energy and net-zero emissions. We enhance resource use efficiency and implement waste management to respond to the continuously evolving international environmental regulations, extreme climate events, and other risks. By estimating financial impacts and planning management costs in advance, we formulate environmental strategies and build operational resilience for the company.
15818000
kWh
Cumulative electricity savings from 2010 to 2023
37
%
Scope 1 and 2 greenhouse gas emissions in 2023 decreased compared to 2020
880000
kWh
Infrastructure for annual renewable energy production of
Energy Management Policy
To ensure the promotion of energy management and energy-saving projects, Nuvoton has implemented the ISO 50001 energy management system and established an energy conservation and carbon reduction working group under the Sustainable Development Committee. This working group is composed of the facilities department and related units. In addition to holding regular energy management meetings to review the current status and project progress, they also share project results and experiences with overseas plants, continuously achieving energy-saving goals.
Energy Management
Electricity is the main source of energy consumption for Nuvoton. In 2023, renewable energy accounted for 0.17% of the total energy types used by Nuvoton Taiwan, and purchased electricity accounted for 96.39%. 1To this end, through the P-D-C-A mechanism, Nuvoton aims to increase energy use efficiency and raise the proportion of renewable energy use. Various energy-saving and carbon-reduction projects have been actively launched, and the energy management system has been implemented. In 2022, the ISO 50001 energy management system was introduced and certified in 2023. Additionally, a digital transformation plan was initiated, introducing smart manufacturing systems to optimize energy smart integration; Nuvoton continues to support the procurement of energy-saving products and optimize equipment efficiency to achieve energy-saving goals.
In 2023, Nuvoton Taiwan's energy reduction ratio decreased by 0.1% compared to the baseline year (2020), while Nuvoton Japan achieved a significant energy reduction ratio over the past three years, with a 26% decrease in 2023 compared to the baseline year (2020). 2
Energy-saving measures were undertaken in four main areas
- Install green energy equipment: Establish a solar power system, expected to generate 880,000 kWh/year.
- Establish an energy management system: Obtain ISO 50001 certification.
- System supply load optimization: Optimize HPA supply pressure (8.4→7.8 kgf/cm²), saving 182,000 kWh/year.
- Prioritize energy-saving equipment when replacing old equipment.
Nuvoton Internal Energy Consumption and Energy Intensity Items by Region (2021-2023)
Nuvoton 2023 Energy Saving Results 3
Nuvoton Taiwan | Electricity Saving (kWh/year) | Energy Saving (GJ/year) |
---|---|---|
Solar Power Installation | 880,000 | 3,168 |
Update High Vacuum Unit 1 to Variable Frequency Machine | 87,600 | 315 |
Optimize HPA Supply Pressure (8.4 → 7.8 kgf/cm²) | 182,500 | 657 |
Replace Scrubber Fan with Energy-Saving Motor | 10,000 | 36 |
Replace P5000, Lam Units with Energy-Saving Pumps12 Units | 112,500 | 405 |
Replace LP-P with 2 Energy-Saving Pumps | 30,000 | 108 |
Change Hsinchu Plant Sign Projector Lights and Landscape Lights to LED | 1,906 | 7 |
LED Change Explosion-Proof Lights to LED | 25,000 | 90 |
Total | 1,329,506 | 4,786 |
Nuvoton Japan (Including Nagaokakyo, Uozu, Arai Plants) | Electricity Saving (kWh/year) | Energy Saving (GJ/year) |
---|---|---|
| 1,953,052 | 7,031 |
Electricity Saving Amount and Proportion Over the Past Three Years 4
Nuvoton Taiwan | Unit | 2020(Baseline Year) | 2021 | 2022 | 2023 |
---|---|---|---|---|---|
Total Internal Energy Consumption | GJ | 268,667 | 274,447 | 267,811 | 268,350 |
Reduction Proportion | % | -2.2% | 0.3% | 0.1% |
Nuvoton Japan | Unit | 2020(Baseline Year) | 2021 | 2022 | 2023 |
---|---|---|---|---|---|
Total Internal Energy Consumption | GJ | 1,043,479 | 989,484 | 916,690 | 767,478 |
Reduction Proportion | % | 5% | 12% | 26% |
Mid- and Long-Term Energy Saving and Carbon Reduction Targets and Planned Corresponding Actions
Strategy and Content | Mid-Term Target (2025) | Long-Term Target (2030) |
---|---|---|
Use of Renewable Energy | Solar power generation of 880,000 kWh/year | Continue to evaluate potential sites for installation |
Improve Energy Use Efficiency | Achieve a cumulative energy-saving rate of 5% compared to the baseline year (2020) | Achieve a cumulative energy-saving rate of 10% compared to the baseline year (2020) |