GHG Emissions
Taipower is committed to developing high-efficiency power generation technologies. In response to global low-carbon transition trends in the energy industry, Taipower has actively pursued energy transition efforts in recent years, reducing the electricity carbon emission factor through the development of low-carbon power, while continuously using cleaner energy to reduce greenhouse gas emissions and provide cleaner electricity for Taiwan's industries and individuals. Regarding thermal power generation, Taipower currently focuses on the following two main directions:
| Gas Expansion and Coal Reduction | Gas-Fired Unit Upgrades |
|---|---|
| Increase the share of gas-fired power generation. In 2025, the trend of using gas as the primary fuel and coal as the supplementary continued, with the share of gas-fired power generation exceeding that of coal-fired power generation. | Gradually replace older gas- fired combined-cycle units with newer gas-fired combined-cycle units that offer higher generation efficiency. |
Taipower GHG Emissions
Emissions of Thermal Power Units
Air Pollution Control Management
Air pollution issues have continued to receive public attention in recent years. Taipower continues to reduce air pollutant emissions from thermal power plants through short-term load reductions, medium-term equipment improvements, and long-term power structure adjustments, all while balancing power supply stability and environmental protection.
- Air Pollution Control Measures:During poor air quality periods, Taipower implements eco-friendly dispatching and load reductions to lower PM, SOx, and NOx emissions, prioritizing low-ash, low-sulfur fuels and cleaner energy. Continuous emission monitoring systems (CEMS) track emissions in real time to ensure compliance.
- Equipment Improvement Plans: Taipower completed 9 thermal power plant air pollution improvement projects in 2025, including upgrading equipment for Taichung Power Plant's Units 5 to 10. The second phase of an indoor coal storage facility was also completed in April 2025 to enhance air quality control.
- Power Structure Adjustment: Taipower continues constructing new gas-fired units and renewing existing ones, gradually reducing coal consumption to advance a low-carbon transition.
Load Reductions in 2025
Water Resource Management
In accordance with the ISO 14001 management system, Taipower tracks updating Ministry of Environment wastewater standards, including new effluent control items, phased ammonia nitrogen controls, stricter flue gas desulfurization wastewater heavy metal limits, and increasing water pollution control fees from 2026 to 2031. Power plants respond by increasing testing, strengthening process control, and optimizing treatment. Emergency measures, such as agricultural water reallocation, are also established to mitigate water shortage impacts on power generation.
Taipower Water Consumption Statistics
| Power Type | Item | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Water Withdrawal | Thermal Power | m³ | 8,488,819 | 9,175,469 | 8,884,954 |
| Nuclear Power | m³ | 506,356 | 504,232 | 451,464 | |
| Water Discharged | Thermal Power | m³ | 661,338 | 777,664 | 626,819 |
| Nuclear Power | m³ | 25,703 | 56,715 | 99,998 | |
| Water Consumption | Thermal Power | m³ | 7,827,481 | 8,397,805 | 8,258,135 |
| Nuclear Power | m³ | 480,653 | 447,517 | 351,465 | |
| Water Intensity (metric tons/ GWh) | Thermal Power | metric tons/ GWh | 52.17 | 60.86 | 65.11 |
| Nuclear Power | metric tons/ GWh | 14.83 | 15.37 | 22.18 | |
Note: Water withdrawal minus water discharge equals water consumption.
Wastewater Recycling and Reuse
Taipower continues to promote rainwater harvesting, wastewater recycling and reuse at thermal power plants to reduce the use of freshwater. Each thermal power plant reviews water use rates monthly and quarterly in accordance with water control procedures, and uses water balance diagrams to monitor water resource use.
Wastewater Recycling and Reuse at Thermal Power Plants
| 2023 | 2024 | 2025 | |
|---|---|---|---|
| Rainwater Reuse | 50,513 | 86,802 | 71,683 |
| Wastewater, Process Water, and Boiler Blowdown Reuse | 2,037,828 | 2,100,816 | 2,711,619 |
Note:Flue gas desulfurization, or FGD, wastewater is not included in reuse statistics because its high salinity may cause equipment corrosion and soil salinization, making it unsuitable for reuse.
Waste Management
Taipower manages waste generated across power generation, transmission, distribution, and electricity sales activities based on waste characteristics. Measures include classification, proper storage, lawful removal, reuse, and flow tracking to reduce environmental impacts and continuously improve resource circulation performance.
Nuclear Energy Related Waste Management
Short-Term |
Medium-Term |
Long-Term |
|
Storage and Disposal Processes for Low-Level Radioactive Waste |
Before 1996, waste was temporarily stored at the Lanyu Low-Level Radioactive Waste Storage Site. Since 1996, waste has been temporarily stored at low-level waste storage facilities at nuclear power plants |
A medium-term temporary storage facility is being planned, and waste will be transported to this facility for centralized storage |
Waste will be transported from short-term or medium-term temporary storage facilities to a final disposal site |
Storage and Disposal Processes for Spent Nuclear Fuel |
In keeping with international practice, spent nuclear fuel is first temporarily stored in used fuel pools and then moved to dry storage facilities |
Utilization of Industrial Waste
Utilization of Industrial Waste
| Industrial Waste | Reuse Practice | 2025 Production | 2025 Reuse Volume | 2025 Reuse Ratio |
|---|---|---|---|---|
| Coal Ash | Used in trench backfill projects and sold as construction materials | 1.54 million metric tons | 1.513 million metric tons | 98.3% |
| Desulfurized Gypsum | Reused by the cement and fire- retardant board industries | 245 thousand metric tons | 245 thousand metric tons | 100% |