NTHU Net-Zero Emissions
National Tsing Hua University
In 2025, National Tsing Hua University emitted a total of 26,267.31 metric tons of carbon dioxide equivalent (tCO₂e). The emissions are categorized by source as follows:
NTHU 2025 Greenhouse Gas Emissions: Scope 1 and Scope 2 Share
This includes emissions from on-campus fuel combustion such as boilers and diesel generators, the use of compressed gas cylinders in laboratories, emissions from work-related activities, and fugitive emissions from refrigerants and other human-related sources.
Purchased electricity is the university's largest source of emissions.
Analysis: Electricity remains the largest source of emissions at National Tsing Hua University, accounting for nearly 90% of total emissions. This indicates that energy-saving measures, the transition to renewable energy, and the management of electricity usage behavior on campus play a critical role in carbon reduction outcomes. Although direct emissions represent a smaller proportion, their sources are more complex — covering fuels, refrigerants, and laboratory gases — making data collection and management more challenging. Therefore, stronger control and monitoring mechanisms are still needed.
| Year | Total Emissions (tCO₂e) | Description |
|---|---|---|
| 2022 | 34,398 | Set as the baseline year. Includes cylinder inventory data, resulting in an abnormally high Scope 1 emission. |
| 2023 | 27,172 | Significant reduction, preliminarily reflecting the results of carbon inventory and energy-saving measures. |
| 2024 | 29,131 | Increased energy consumption due to the operation of new buildings (e.g., cooling systems). |
| 2025 | 26,267 | |
| Target | 4% annual reduction, 24% by 2030, net zero by 2050 | Following the Science-Based Targets (SBT) model, allowing 2023–2024 as a construction and adjustment period. |
- Emissions continue to rise, indicating that without university intervention or carbon reduction measures, emissions will increase with campus expansion and population growth.
- Projected to exceed 40,000 tCO₂e by 2050.
- Adopts the Science-Based Targets (SBT) approach, setting an annual reduction rate of 4.2%.
- This pathway is expected to achieve net-zero emissions around 2046, aligning with internationally recognized reduction trajectories.
- A slightly more moderate trajectory compared to the SBT scenario.
- Takes into account the campus construction peak (2022–2024), the carbon inventory system establishment period, and realistic growth in electricity demand.
- Aims for a 24% reduction by 2030 (aligned with national targets) and net zero by 2050.
- From 2022 to 2024, total emissions have decreased by over 15%, consistent with mid- to long-term reduction trends.