Stable Power Supply and Installed Capacity
To maintain power supply stability alongside rising electricity demand, Taipower deploys a multi-pronged strategy combining new unit commissioning, renewable integration, demand response, time-of-use pricing, and evening peak management to keep the peak reserve margin above 8%. The company tracks multi-year generation metrics, unit availability, and power supply compositions to optimize dispatch flexibility, while reinforcing operational resilience through preventive maintenance, reserve dispatch, fuel security, disaster readiness, and power quality management.
Total Amount and Composition of Power Generation from 2023 to 2025
| 2023 | 2024 | 2025 | ||||
| Amount | Percentage | Amount | Percentage | Amount | Percentage | |
| Amount of Power Generated | 1,745 | 71.1% | 1,721 | 68.4% | 1,681 | 66.6% |
 Self-owned Energy Storage, including Pumped Storage and Batteries |
31 | 1.2% | 31 | 1.2% | 31 | 1.2% |
 Thermal |
1,497 | 61.0% | 1,524 | 60.6% | 1,565 | 62.0% |
 Nuclear |
172 | 7.0% | 117 | 4.6% | 31 | 1.2% |
 Renewable Energy |
46 | 1.9% | 49 | 1.9% | 54 | 2.1% |
| Purchased Power | 710 | 28.9% | 794 | 31.6% | 844 | 33.4% |
| Privately Owned Thermal |
453 | 18.5% | 480 | 19.1% | 487 | 19.3% |
| Renewable Energy |
197 | 8.0% | 251 | 10.0% | 266 | 10.5% |
 Cogeneration |
59 | 2.4% | 59 | 2.4% | 84 | 3.3% |
| Purchased Power from Energy Storage, Battery | 0 | 0% | 3 | 0.1% | 7 | 0.3% |
| Net Power Generated and Purchased | 2,455 | 100.0% | 2,514 | 100.0% | 2,524 | 100.0% |
Note: Detailed items are not equal to the total due to rounding, and the round-off difference is not adjusted.
Power Dispatch and Reliability Management Mechanism
Regular Review and Analysis
- Regularly convene Electromechanical System Incident Review Meetings and Power Dispatch System Incident Review Meetings.
Risk Management Implementation
- Identify power shortages affecting system stability and safety as a key risk item, assess risk levels under different scenarios, and establish corresponding response measures.
- Conduct quarterly tracking and overall reviews at the end of each quarter.
Personnel Training
- Train reserve online dispatch personnel, conduct license certification exams for new dispatchers, and establish retraining and license renewal systems for licensed personnel.
Improve Power Supply Reliability
Taipower is committed to enhancing the efficiency of power system management and continues to strengthen unit availability, power dispatch, risk control, and user communication mechanisms to steadily improve its overall power supply reliability. Under these management mechanisms, the SAIDI value in 2025 was 14.874 minutes per user per year, and the SAIFI value was 0.186 outages per user per year. Distribution-related outage cases decreased by nearly 30% compared with 2019, and outages caused by small animal interference decreased from 3,169 cases in 2015 to 1,011 cases in 2025. Going forward, Taipower will continue to steadily improve power supply stability and reliability through equipment enhancement, risk control, refined dispatch, and smart operation and maintenance.
Ensuring Nuclear Power Safety
The Company always adheres to the concept of "defense-in-depth" to ensure the safe operation of its nuclear power plants. Taipower aims to:
01
Prevention
Evaluation and prevention are conducted in advance based on various extreme conditions.
02
Mitigation
Disaster mitigation is executed to prevent the leakage of radioactive materials from nuclear power plants.
03
Emergency Preparedness
If disaster mitigation fails to prevent external leakages of radioactive materials, protective actions will be taken to reduce the radiation exposure outside the plant.
04
Strategy
Specific Major Incident (SMI) Guidelines were developed as a basis for decision-making and operations, and are based on current design benchmarks for earthquake resistance and tsunami prevention at nuclear power plants, emergency operating procedures and severe nuclear outage handling guidelines. In normal times, the guidelines serve as a standard for personnel training and drills.
Power Supply Reliability Performance
The average duration of outages (minutes / household • year)
The average number of outages (times / household • year)
| 2023 | 2024 | 2025 | ||||
| Target | Performance | Target | Performance | Target | Performance | |
| Planned Outages | 12.103 | 11.292 | 12.063 | 11.325 | 11.991 | 11.263 |
| Incident Outages | 4.398 | 3.933 | 4.337 | 4.506 | 4.309 | 3.611 |
| Total | 16.5 | 15.225 | 16.4 | 15.831 | 16.3 | 14.874 |
| 2023 | 2024 | 2025 | ||||
| Target | Performance | Target | Performance | Target | Performance | |
| Planned Outages | 0.065 | 0.056 | 0.065 | 0.055 | 0.066 | 0.056 |
| Incident Outages | 0.195 | 0.130 | 0.195 | 0.154 | 0.194 | 0.130 |
| Total | 0.26 | 0.186 | 0.26 | 0.209 | 0.26 | 0.186 |
Line Loss Rate from 2023 to 2025
