System Reliability and Availability

The Xayaburi Hydroelectric Power Plant actively monitors climate conditions and rigorously assesses risks that may impact its operations. In 2024, the following key initiatives were undertaken.

1. Monitoring and response planning: The power plant formulated action plans and closely monitored the situation using the SCADA (Supervisory Control and Data Acquisition) system, which enabled real-time data collection and operational status monitoring for continuous and efficient power generation.
2. Performance assessment and monitoring through key indicators: Plant operations were continuously tracked and assessed based on two key indicators: plant performance ratio for performance measurement and annual maintenance performance for equipment availability and capability monitoring.
3. Annual testing: The Xayaburi Hydroelectric Power Plant conducted annual testing under the Power Purchase Agreement (PPA) and Contracted Operating Characteristics (COC) requirements during November 3-6, 2024. The rigorous testing covered all critical aspects specified in the PPA and was successfully completed within the planned timeframe, reinforcing the plant’s commitment to maintaining operational standards and power generation reliability.

   

   Annual test Activities during 3-6 November 2024 at Xayaburi Hydroelectric Power Plant

4. High flow emergency response and community support: In August and September 2024, the power plant encountered high flow emergencies due to heavy rainfall triggered by Yagi and Soulik storms, coupled with water releases from upstream dams, which significantly impacted water levels in the plant area. In response, the plant activated its emergency response plan to effectively mitigate risks and support surrounding communities. Key measures taken included: In August and September 2024, the power plant encountered high flow emergencies due to heavy rainfall triggered by Yagi and Soulik storms, coupled with water releases from upstream dams, which significantly impacted water levels in the plant area. In response, the plant activated its emergency response plan to effectively mitigate risks and support surrounding communities. Key measures taken included:
   • Water level alert: Advance warnings were issued to local residents using an efficient communication system, ensuring rapid information dissemination across the community.
   • Evacuation and community assistance: A systematic evacuation and relocation plan was executed for at-risk areas. The plant provided boats and manpower to assist affected communities.
   • Operational Continuity and Impact Mitigation Due to the swift and effective emergency response measures, the plant was able to resume power generation quickly, minimizing disruptions to local communities and the environment while reinforcing confidence in its emergency management capabilities.

     

     

     

     

     Emergency Response Management Plan – June 18, 2024

CKPower developed the XHPP Inflow Forecasting System (2024) in collaboration with DHI A/S (Danish Hydraulic Institute), Denmark. The system integrates a Hydrometeorological Forecasting System (HMFS) with real-time weather conditions and inflow volume data, incorporating advanced mathematical models to enhance forecasting accuracy and decision-making. This newly developed system enables precise simulation of upstream and downstream flow scenarios, allowing for efficient water situation forecasting and improved power generation planning. By enhancing water management capabilities, the system ensures energy production reliability while maintaining environmental and community safety and stability in all situations.

The Nam Ngum 2 Hydroelectric Power Plant implemented comprehensive water management strategies to ensure uninterrupted and reliable electricity production, fulfilling the Company’s contractual commitments while minimizing environmental impact. Key actions taken are as follows.

1. Seasonal water management
   • Dry season: Water levels were maintained above designated thresholds to support continuous power generation and ensure operational stability.
   • Rainy season: Proactive floodgate management measures were implemented to prevent unnecessary releases, minimizing potential impacts on local communities and the environment.
2. Major overhauls

   To enhance operational efficiency and system reliability, major overhauls were conducted for Unit 3 and Unit 1 from November 18, 2023, to February 14, 2024.

   These overhauls:

   • Ensured machinery and equipment efficiency
   • Strengthened system reliability and availability
   • Supported uninterrupted power generation

   Through these strategic improvements, the power plant continues to uphold high performance standards while reinforcing its commitment to sustainability and energy security.

Major Overhaul activities at Unit 3 and Unit 1 of Nam Ngum 2 Hydroelectric Power Plant

Bangpa-in Cogeneration Power Plant collaborated with the Provincial Electricity Authority (PEA) to upgrade the power transmission system within the industrial estate into a closed-loop system, as detailed below:

• The power plant can transmit electricity through two power stations, enhancing operational flexibility and ensuring continuous power transmission, even when one station undergoes maintenance or experiences malfunctions.
• This collaboration underscores the power plant’s commitment to energy security, supporting reliable and uninterrupted power supply within industrial estate.

Bangkhenchai Solar Power Plant conducts continuous performance assessment and monitoring using key indicators to enhance power generation efficiency and stability:

1. Key indicators
   • Plant performance ratio: Measures power generation efficiency.
   • Annual maintenance performance: Evaluates equipment reliability and identifies areas for improvement
2. Performance monitoring
   • The plant conducts monthly performance evaluations to analyze factors affecting efficiency and implement necessary corrective measures.

The primary goal of Bangkhenchai Solar Power Plant is to enhance the reliability and sustainability of its power generation through efficient operations and strong environmental responsibility.