To reduce the accidents occurrence and to stabilize the system power supply and improve operational performance, thermal power plants adopt the following measures.

• Continue to implement the professional license system for maintenance and operation personnel to make the unit safe and reliable.
• The maintenance and operation of the unit's equipment are performed in accordance with the maintenance operation standards.
• Establish a preventive and maintenance PM system. The important equipment will master the operation quality of the equipment through regular maintenance, testing, replacement of components and checkpoint work.
• Establish an immediate maintenance CM system, the unit equipment operation is abnormal, immediately open the repair order, contact the maintenance department online maintenance.
• Set the unit overhaul schedule and the best maintenance schedule to ensure the unit operation quality.
• Establish a crew accident review mechanism, and if necessary, set up a group of experts to conduct research and diagnosis on special accidents to find out the cause of the accident.
• Implementing power plant safety management by walking around and checking mechanism to ensure the safety of personnel and equipment
• Natural gas power plant fuel leak detection system provides early warning measures for safe shutdown of the unit to ensure safe operation of the unit.
• Each power plant has an access control security system to ensure the environmental safety management of the power plant
• Each water and thermal power plant are equipped with a fire safety system, which implements fire monitoring and installation fire protection facilities for each plant and equipment in accordance with the design standards of national work safety regulations.

The Consumption of Fossil Fuels

Taiwan's self-produced energy is lacking, it is almost purchased from abroad. The use of domestic energy economy, safety and stability must be considered. Therefore, Taipower has built different types of generator sets. For the purpose of thermal power generating units, the fuel used. There is coal, fuel oil, diesel, natural gas, and the consumption of fossil fuels for thermal power generation in the past five years is shown in the following table. In addition to increasing power generation and fuel consumption in line with the growth of power demand, the use of domestic environmental protection emission standards has become stricter and the use of natural gas has increased rapidly.

Gross Thermal Efficiency

In line with the government's stable power supply policy, the company assists the country's economic development and creates a high-quality investment environment in Taiwan. All thermal power plant units are operating conscientiously to reduce power generation costs and stabilize power supply, giving priority to low-cost Taipower coal-fired base units. Supplying the power required by the system, and then supplying the fuel to the mid-point unit of the fuel and gas with higher cost. The medium-tipped unit also provides the variable load with the change of the demand for electricity. At the same time, it is committed to improving the efficiency of the unit and gradually transforming it into high efficiency. New unit or equipment improvement, 48.7% in 2025, the best situation in history.

The Ratio of Station Service

The ratio of station service (%) in the plant is the ratio of the auxiliary equipment used in the power generation production process. As the Taipower gradually replaces the old units, builds the new units, or improves the energy efficiency of equipment, the power consumption rate of the whole fire unit has been decreasing year by year. In 2025, the new units have been built one after another. It improves efficiency of power generation and auxiliary equipment power consumption. The rate of auxiliary equipment power consumption decreased to 3.28%. This is a historic achievement.

The Capacity Factor

The capacity factor (%) is the ratio of the actual annual power generation to the ideal maximum power generation. Due to necessary repairs, safety maintenance, cleaning work, troubleshooting, adjusting operations based on peak and off-peak load cycles, shutting down units for dispatching or mid/peak-type units might be high-load operated, or low-load operated for power grid load demand, the annual capacity factor is around 60%. In recent years, because of increase of power grid demand and insufficient reserve capacity, the capacity factor has increased year by year. In 2017, it reached 74.5%. Due to several operational constraints: the curtailment of coal-fired units for air quality management, the reduction in combined-cycle units output to meet environmental regulations, and the power grid’s priority dispatch for renewable energy, the capacity factor is 56% in 2025.

The Availability Rate

Since all types of units need to carry out necessary repairs, safety maintenance, cleaning work, equipment troubleshooting, etc., the unit needs to reduce the load or stop the power supply. After deducing the above-mentioned affected power generation, the remaining power generation accounts for the maximum power generation. The ratio is the availability rate (%).

Due to the enhanced operational skill of team members and the well maintenance, the availability rate of all fire units has increased to about 90% in recent years. In 2017 and 2025, the availability rate was 90.7% and 87.2%, respectively.

Under the premise of ensuring the availability of the unit and the overhaul and failure of the inorganic group, the company is in accordance with the principle of "economic dispatch" to sequentially schedule the low-cost power generation of Taipower (the coal-fired power generation cost in 2025 is 2.20 NTD/kWh) and IPP coal-fired base units. In order to meet the power demand, it is necessary to dispatch a slightly higher cost which is gas combined-cycle units of Taipower (2025 power generation cost of 2.72 NTD / kWh) and IPP gas combined-cycle units, which can meet the general load demand. When it comes to period of peak power demand, Taipower will use more expensive type units to meet the demand. It will be oil-fired (cost was 5.87 NTD/kWh in 2025), gas-fired (cost was 3.96 NTD/kWh in 2025), and diesel-fired units. By leveraging the diverse generation unit type mentioned above, Taipower can achieve the goal of cost optimization. 

In recently years, Taipower cooperated government’s policy which is gas-to-coal switching. The dispatch mode changed to priority dispatch for renewable energy and environmental dispatch. The traditional 'coal-fired dominant' dispatch model is gradually becoming ‘gas-fired (combined-cycle) dominant'. The highest priority of dispatch strategy currently is reliability of power supply while concurrently operate the environmental dispatch.