To enhance energy management effectiveness and implement energy-saving and carbon reduction policies, the university has established the Energy Conservation Promotion Task Force. This task force is responsible for planning, executing, and reviewing various energy-saving measures to continuously improve campus energy efficiency and advance toward the goal of a low-carbon, sustainable campus. The task force holds regular meetings each semester to set energy-saving targets and action plans, discuss improvement measures, monitor implementation effectiveness, promote energy-saving education and awareness, and coordinate other energy management-related affairs, aiming to establish a campus-wide culture of energy conservation.
Energy and Carbon Management
Energy and Carbon Management
Energy Saving Policy
In the face of global climate change, energy transition, and limited resources, energy conservation, carbon reduction, and circular utilization have become essential trends for sustainable development. NKUST upholds the concept of environmental sustainability and actively promotes the development of a green campus. The university encourages faculty and students to practice low-carbon living and make effective use of campus space and ecological resources, jointly creating a friendly and sustainable campus environment.
To achieve energy-saving goals, the university continues to implement various energy conservation measures and management plans. These include centralized air conditioning system control, replacement of energy-efficient lighting and high-efficiency transformers, and the installation of renewable energy facilities to improve energy use efficiency and reduce electricity demand. By continuously improving energy management and upgrading equipment, the university is gradually reducing campus carbon emissions, advancing toward the goal of a low-carbon sustainable campus. In 2025, the replacement of outdated equipment and the retirement of air conditioners over nine years old, along with related energy-saving measures, were implemented. The total electricity saved was approximately 948,814 kWh. The adoption of energy-saving measures resulted in a direct reduction of energy consumption by 3415.73 gigajoules (GJ).
Electricity Consumption and Energy Use Intensity (EUI) Over the Past Three Years
Electricity Consumption Energy Use Intensity (EUI)
| Years | Electricity Consumption |
Energy Use Intensity (EUI) |
Electricity Consumption (GJ) |
|---|---|---|---|
| 2025 | 41,263,251 | 67.1 | 148,547.7036 |
| 2024 | 41,887,000 | 68.1 | 150,793.2000 |
| 2023 | 40,815,454 | 69.4 | 146,935.6344 |
Electricity consumption reached its highest level in 2024 before declining in 2025, while the Energy Use Intensity (EUI) continued to decrease from 69.4 in 2023 to 67.1 in 2025.
To strengthen campus energy and carbon management operations, NKUST defines its organizational boundaries in accordance with ISO 14064-1:2018 and the Ministry of Environment’s greenhouse gas inventory guidelines. In addition to inventorying fuel use by administrative units’ official vehicles and refrigerant use this year, NKUST also expanded the scope to include an inventory of refrigerant equipment in academic units, and conducted a campus-wide inventory of fugitive emission sources such as fire extinguishers and septic tanks, thereby improving the completeness of Scope 1 emissions data. In terms of energy use, NKUST simultaneously compiled electricity consumption data from its five campuses and conducted University-wide electricity consumption statistics and emissions calculations to identify the main sources of carbon emissions. Through cross-unit data collection and integration, NKUST has completed the greenhouse gas inventory report and established an emissions inventory this year, providing an important foundation for subsequent promotion of energy conservation and carbon reduction, energy management, and net-zero transition, while continuing to move toward the goal of a sustainable campus.
Greenhouse gas emissions in the past three years
Scope 1 (fuel for company vehicles) Scope 2 Scope 3 (transportation shuttle buses)
|
Scope |
2025 |
2024 |
2023 |
|---|---|---|---|
|
Scope 1 (fuel for company vehicles) |
23.89 |
25.4 |
25.4 |
|
Scope 2 |
19,559 |
19,854 |
20,163 |
|
Scope 3 (transportation shuttle buses) |
74.76 |
19.48 |
39.30 |
|
Total emissions |
19,657.65 |
19,898.88 |
20,227.7 |
|
Carbon emission reduction amount |
241.23 |
328.82 |
－ |
NKUST's electricity consumption is measured based on the period from January 1 to December 31 of each year.
NKUST calculates Scope 2 emissions by multiplying the electricity consumption in 2025 by a carbon emission factor of 0.467.
Carbon Reduction Measures and Mitigation Strategies
Ⅰ.To align with energy conservation initiatives and the integration of renewable energy (solar power), the University is committed to developing a sustainable campus.
Ⅱ.Energy-saving plans are actively promoted, including the adoption of energy-efficient lighting and the replacement of outdated, high-energy-consuming equipment to reduce electricity usage and support environmental sustainability.
Ⅲ.The University currently operates 14 official vehicles. In future replacement plans, electric vehicles will be prioritized.
Ⅳ.The University continues to promote low-carbon transportation and green mobility policies, strengthening the management of official vehicles and encouraging the use of green transportation to support sustainable campus development.
Short-, Medium-, and Long-Term Strategies
Ⅰ.Short-Term Goals:
(Ⅰ)Continue evaluating suitable locations for the installation of solar photovoltaic systems across campus.
(Ⅱ)Strengthen the management and dispatch efficiency of official vehicles, and encourage faculty, staff, and students to walk, cycle, or use public transportation when accessing campus. Continuously optimize campus parking and transportation management measures.
Ⅱ.Medium-Term Goals:
(Ⅰ)Gradually replace existing old lighting fixtures with energy-efficient lighting systems.
(Ⅱ)Phased replacement of aging transformers to reduce electricity loss.
(Ⅲ)Gradual upgrade and replacement of high-energy-consuming central air-conditioning systems and outdated split-type air conditioners.
(Ⅳ)In alignment with government energy conservation and carbon reduction policies, continuously review the usage of official vehicles, assess the feasibility of adopting energy-efficient or low-emission vehicles, and progressively improve the campus green transportation environment.
Ⅲ.Long-Term Goals:
(Ⅰ)Incorporate solar photovoltaic systems into newly constructed buildings to support partial energy consumption.
(Ⅱ)Install energy-efficient lighting systems in all new buildings.
(Ⅲ)Continuously promote low-carbon campus transportation management measures, increase the usage ratio of green transportation, and gradually create a more environmentally friendly and sustainable campus transportation environment.
Solar Power Generation
NKUST currently has installed photovoltaic systems, which are categorized into the following three types based on the charging method. In 2025, a total of 4,504,362 kWh of electricity was generated:
Ⅰ.Charges for the self-built system which was sold to Taipower: The photovoltaic equipment installed at the Yanchao Campus, with a capacity of 499.2 kW, was sold to Taipower (generating 585,000 kWh in 2025).
Ⅱ.Roof rental income:
(Ⅰ) Roof rental income: The First Campus rents the roof to manufacturers for the installation of photovoltaic equipment with a capacity of 447.47 kW and sold to Taipower with rebates of 10.5% (generating 550,087 kWh in 2025).
(Ⅱ) In accordance with the central government’s policy of the 2021 Kaohsiung City Central Government Public Roof Joint Bidding and Leasing Project, suitable building roof areas in the Jiangong Campus, Nanzih Campus, Cijin Campus, and First Campus were selected for installation, with a total photovoltaic capacity of 2,979.76 kW sold to Taipower with rebates of 15.05% (generating 3,369,275 kWh in 2025).
Ⅲ.Self-built power generation for own use:
The solar power generation system installed at the First Campus swimming pool has a capacity of 40.2kW, while the solar power generation system installed at the Nanzih Campus shipbuilding training workshop has a capacity of 2.36 kW. In addition to grid-connected internal power generation for own use, renewable energy certificates are also publicly available for sale and transfer (Certificates issued by the Renewable Energy Certification Center, Bureau of Standards, Metrology and Inspection, Ministry of Economic Affairs. Every 1,000 kWh generated is one certificate. Based on the number of certificates, no certificates were generated last year, and therefore no estimate could be made.)
Ⅳ.Photovoltaic modules are subject to efficiency degradation over time due to prolonged exposure to high temperatures and environmental factors, which can result in equipment aging and reduced conversion efficiency. In addition, accumulation of dust, fallen leaves, and bird droppings may cause localized overheating and potential component damage, thereby reducing overall power generation output. Variations in sunlight duration also significantly affect electricity generation performance. At the First Campus swimming pool, the self-generated solar power system operates on a self-consumption model (one certificate is issued for every 1,000 kWh generated). In 2025, however, abnormal transmission line conditions occurred, and no certificates were issued to estimate generation output. As a result, the annual electricity generation statistics for that year do not include the output from this system. The University is currently conducting an assessment of campus power resilience through the development of a microgrid system. This includes evaluating the feasibility of expanding self-built, self-consumed solar photovoltaic installations as part of a broader campus microgrid framework.
Renewable energy usage in the past three years
Renewable energy generation Green certificate generation Total
2025
4,504,344
4,504,344
2024
5,288,378
5,306,378
2023
5,537,891
5,563,891
|
Years |
Renewable energy generation |
Green certificate generation |
Total |
Total/GJ |
|---|---|---|---|---|
|
2025 |
4,504,344 |
0 |
4,504,344 |
16,215.6384 |
|
2024 |
5,288,378 |
18,000 |
5,306,378 |
19,102.9608 |
|
2023 |
5,537,891 |
26,000 |
5,563,891 |
20,030.01 |
Renewable energy facilities and generation capacity, renewable energy certificate purchases in 2025
Establishing photovoltaic facilities on its own and selling electricity to Taipower (Yanchao Campus)
499.2 kW1.7971 GJ
Renewable energy generation
585,000
2,106 GJ
Rental of roof to external manufacturers' photovoltaic facilities for electricity generation (roof of the College of Electrical Engineering and Computer Science building, roof of Practical Factory 1, roof of Practical Factory 2 at the First Campus)
447.47 kW1.6109 GJ
Renewable energy generation
550,087
1,980.3132 GJ
Self-generated electricity for own use and certificates sale (e.g., roof PV systems and ground-mounted PV systems of the First Campus swimming pool) 40.2 kW0.1447 GJ
－
Kaohsiung City Central Government Public Roof Joint Bidding and Leasing Project
2,979.76 kW10.7271 GJ
Renewable energy generation
3,369,275
12,129.39 GJ
|
Renewable Energy Facilities |
Renewable energy generation |
Renewable energy generation（GJ） |
|---|---|---|
|
Establishing photovoltaic facilities on its own and selling electricity to Taipower (Yanchao Campus) |
585,000 |
2,106 |
|
Rental of roof to external manufacturers' photovoltaic facilities for electricity generation (roof of the College of Electrical Engineering and Computer Science building, roof of Practical Factory 1, roof of Practical Factory 2 at the First Campus) |
550,087 |
1,980.3132 |
|
Self-generated electricity for own use and certificates sale (e.g., roof PV systems and ground-mounted PV systems of the First Campus swimming pool) |
－ |
－ |
|
Kaohsiung City Central Government Public Roof Joint Bidding and Leasing Project |
3,369,275 |
12,129.39 |
|
Total |
4,504,362 |
16,215.7032 |