IRPC implements energy management in the petrochemical and refinery business through a structured approach aligned with ISO 50001 principles, starting with a clear corporate energy policy and governance framework led by an Energy Management Committee. The company conducts regular energy reviews to identify major energy-consuming systems, sets measurable KPIs and targets for energy intensity and GHG reduction, and integrates them into business plans. Operational measures include deploying energy-efficient technologies, optimizing processes with real-time monitoring and advanced controls, and maintaining equipment to ensure efficiency.
IRPC also builds workforce capability through training, cross-functional collaboration, and engagement programs to encourage energy-conscious behavior. Performance is monitored via digital energy platforms and periodic audits, with results reported to senior management for continuous improvement. Energy management is further linked to the company’s decarbonization strategy through initiatives such as fuel switching, cogeneration, and renewable energy integration, ensuring lower carbon intensity and long-term sustainability.
Energy Consumption Efficiency
IRPC has established ambitious energy reduction goals, including limiting energy consumption to 57.1 million gigajoules by 2025 and achieving an energy efficiency rate of 83% by 2030. These targets are supported by long-term management plans designed to position the Company as an industry leader in energy performance. To meet these objectives, IRPC has implemented several energy conservation projects aimed at increasing energy.
Target
Short-Term Target
- Total enterprise energy consumption in 2024 did not exceed 58.88 million GJ
- Energy consumption indicator for 2024 is set at 86.78%.
Long-Term Target
- Total enterprise energy consumption in 2025 did not exceed 57.1 million GJ
- Energy consumption indicator for 2030 is set at 83%.
2024 Performance
- Total enterprise energy consumption in 2024 amounts to 60.80 million GJ
- Energy consumption indicators in 2024 equals 82.67%.
Energy Conservation Programs
Overall Energy Conservation Projects in 2024
Energy Conservation Projects
Project
33
Energy Consumption Reduction
GJ/year
296,391
Gross Expenses
million Baht
109
GHG Emission Reductions
tCO2eq
18,969
Key Energy Conservation Projects in 2024
ADU2 Oil Line Cleaning of Heat Exchangers 41E013A/B and 41E024A/B
ADU2 of IRPC Oil refinery helps promote energy efficiency by cleaning both heat exchangers No.41E013A/B and 41E024A/B in oil line. ADU2 discovered the efficiency of heat transfer of Heat Exchanger deteriorates. This degraded heat exchange performance stems from fouling or aging deposits on surfaces of heat exchanger. Heat exchanger is designed to transfer heat to crude oil before flowing into a fractionating column. Deposits weaken a heat exchanger’s heat-transfer capacity and extra fuel for furnace requires to keep compensate for gaps in the target temperature. Then, ADU2 disassembled and cleaned both heat exchangers No.41E013A/B and 41E024A/B. As a result, the temperature of crude oil from preheated furnace increased by 10oC which can save heat energy by 10,002,176 Megajoules per year. On the other hand, ADU2 can save fuel costs by 39 million Baht per year and reduce Greenhouse gas emissions of 640 tons of carbon dioxide equivalents (tCO2eq).
Power Consumption Diminution of the Compressor in the Refrigeration System at HDPE plant
When an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.
The purpose of this project is to reduce the energy use of the gas compressor (Compressor) in the refrigeration unit by lowering the inlet pressure of the compressor from 1.3 BarG to 1.0 BarG. In HDPE Plant, there are 3 sets of refrigeration systems and typically 2 sets are in operation. The functionality of refrigeration system is to reduce the temperature of substances used in the production process in HDPE plant. The selected type of refrigerant is R22. The main equipment of refrigeration system are compressor, evaporator, and condenser. And refrigeration compressor is the heart of the system, acts as pump that moves the refrigerant through the system and requires power supply. Reducing the inlet pressure from 1.3 BarG to 1.0 BarG leads to the reduction of power consumption from 420 kWh to 390 kWh per 1 compressor with the unchanged performance of the cooling system. This project reduced energy costs by 1,435,200 Baht per year while greenhouse gas emissions decreased by 54 tons of carbon dioxide equivalents (tCO2eq).
Operate One Slurry Pump Around
The project to reduce the electricity consumption of lower compartment of fractionation tower “53C101”, by operating one slurry pump instead of two. In fractional distillation, the temperature of the slurry oil at the bottom of the fractionating column is relatively high, at 330oC. It is required to reduce this temperature before reverting to fractionating tower “53C101” to maintain the level of heat in tower suitable for refining the distillates. When converting slurry oil to transfer heat before flowing into a fractionating tower, 2 slurry pumps are typically required which are 53P102B and 53P102C, with another slurry pump “53P101A” prepared as backup pump. The project enables the adjustment of slurry pump operation condition from two slurry pumps to only one slurry pump without any negative impact to fractional distillation. As a result, it helps save electricity costs by 3.5 million Baht per year or decrease electricity consumption by 201 KWh, while also reducing GHG emissions by 366 tons of carbon dioxide equivalent (tCO2eq).
Extruder 07X068B Optimization at CCM Plant
This project focuses on reducing electricity consumption in the color matching process by optimizing the use of Extruder 07X068B. It has successfully achieved a reduction of 5,280 kWh per year, surpassing the initial target of 4,800 kWh, equivalent to 19 GJ annually. This reduction translates to a greenhouse gas (GHG) emission reduction of approximately 366 tCO₂eq per year. This achievement highlights a substantial improvement in energy efficiency.
