Energy Management
In recognition of the importance of efficient resource utilization and the reduction of environmental pollution, EGAT places strong emphasis on the effective management of energy consumption.
| 2025 Target | Performance |
| ● The average Net Heat Rate of EGAT power plants is maintained at the guaranteed heat rate for electricity generation, inclusive of compensation for equipment deterioration | ● The average Net Heat Rate of EGAT power plants performed better than the target |
Management Approach
The Line of EGAT Deputy Governor – Fuel is designated to be responsible for the fuel management process, with the role of ensuring sufficient and efficient fuel production and procurement for power plants, while also supporting the development of fuel-related businesses and other related businesses within the EGAT Group. This function operates in parallel with the Line of EGAT Deputy Governor – Generation, which is responsible for electricity generation process.
EGAT power plants utilize a diversified energy mix, comprising both renewable and non-renewable energy sources, in order to ensure that the country’s electricity generation remains secure, reliable, and reasonably priced. In 2025, EGAT continued to use natural gas as its primary fuel, together with lignite coal and oil. Fuel consumption from various sources was as follows:
- Natural Gas: EGAT used natural gas from the Gulf of Thailand, onshore sources, and imported natural gas (from Myanmar and liquefied natural gas) for electricity generation at EGAT power plants, totaling 289,619 million cubic feet.
- Lignite Coal: EGAT used lignite from the Mae Moh Mine for electricity generation at the Mae Moh Power Plant, totaling 12.55 million tons.
- Fuel Oil: EGAT used 27.00 million liters of fuel oil as the primary energy source for electricity generation at the Krabi Power Plant. It also used diesel oil at the Bang Pakong Power Plant, Chana Power Plant, Krabi Power Plant, Mae Hong Son Power Plant, Mae Moh Power Plant, Nam Phong Power Plant, and South Bangkok Power Plant, totaling 8.69 million liters.
In addition, EGAT also generated electricity from other renewable energy sources, including geothermal energy, solar energy, and wind energy.
Energy Conservation
EGAT implements internal energy conservation measures across the organization through various initiatives, including the following:
| Energy-saving Measure | Description | Energy Saved |
| Lighting Bay 3–4 Improvement, Bhumibol Dam | Replaced 354 old light bulbs that had high energy consumption and had been in use for more than 10 years with new, high-efficiency bulbs in order to reduce energy consumption. | 203,116.61 MJ/year |
| Replacement of Air Conditioners at Bhumibol Dam | Replaced 77 aging air-conditioning units to reduce electricity consumption and improve efficiency. | 370,192.32 MJ/year |
| Air Chiller Bay 7 Improvement, Bhumibol Dam | Replaced 1 set of aging, high-energy-consuming air chiller unit with a new unit to improve efficiency and reduce energy consumption. | 2,128,680.00 MJ/year |
| Air Handling Unit Improvement, Tha Thung Na Dam Power Plant | Replaced components of 2 Air Handling Unit sets that had been in service for approximately 10 years and operated 8,760 hours per year per unit, enabling them to perform at full efficiency. | 87,174.07 MJ/year |
| Lighting System Improvement at Tha Thung Na Dam Power Plant | Replaced 440 lighting fixtures that had been in use for more than 20 years and had begun to deteriorate. | 315,864.58 MJ/year |
| Replacement of End-of-Life Air Conditioners with Inverter Systems, Tha Thung Na Dam Power Plant | Replaced 28 air-conditioning units with inverter-type units. | 146,327.04 MJ/year |
| Preventive Maintenance of Air Conditioners, Sai Noi Office | Maintenance of 410 air-conditioning units, reducing energy consumption by approximately 7%. | 1,007,513.28 MJ/year |
| Room Temperature Adjustment from 24°C to 26°C, Sai Noi Office | Adjusted room temperature settings to 26 degrees Celsius to reduce energy consumption. | 519,580.08 MJ/year |
| Replacement of Lighting Lamps, Mae Moh Training Center | Replaced aging T5 lighting lamps with 84 T8 lamps. | 13,245.12 MJ/year |
| Air Conditioner Maintenance, Mae Moh Training Center | Maintenance air-conditioning units, which represent the largest energy-consuming system in the building, to improve the operating efficiency. | 4,561.92 MJ/year |
| HVAC Measure: Controller Room and Switchgear Room Separation Project, Building B35, Mae Moh Power Plant | Set room temperature appropriately for the equipment used inside in order to reduce the load on the air chiller. | 65,279.52 MJ/year |
| Use of New High-Efficiency Air-Conditioning Units to Replace Existing Units: Ventilation Improvement Project for the Air Compressor Room, Building ZK Unit 8, Mae Moh Power Plant | Reduced the energy consumption of the air compressor in the Ash Handling System and enhanced the reliability of the compressed air system. | 111,267.90 MJ/year |
| Prevention of Energy Loss by Reducing Heat Rate Loss from Steam Leakage at Boiler Feed Water Pump MM-T14 | Reduced energy loss caused by steam leakage and improved the performance of the plant’s steam generation system. | 114,595,583.87 MJ/year |
| Replacement of 47 Split-Type Air Conditioners from Fixed-Speed to Variable-Speed Systems | Inverter air conditioners, minimum capacity 13,000 Btu/h – 5 units | 34,512,372.00 จูล |
| Inverter air conditioners, minimum capacity 18,000 Btu/h – 1 unit | 1,076,544.00 จูล | |
| Inverter air conditioners, minimum capacity 24,000 Btu/h – 7 units | 102,840,516.00 จูล | |
| Inverter air conditioners, minimum capacity 30,000 Btu/h – 1 unit | 3,752,028.00 จูล | |
| Inverter air conditioners, minimum capacity 36,000 Btu/h – 5 units | 72,586,800.00 จูล | |
| Inverter air conditioners, minimum capacity 48,000 Btu/h – 28 units | 581,580,828.00 จูล | |
| Replacement of Air Conditioners in the Kasem Chatikavanij Auditorium, Headquarters | Replaced air-conditioning units equipped with fixed-speed compressors with units using inverter compressors. | 223,704,000.00 จูล |
Energy consumption within the organization
| item | Energy consumption (GJ) | ||
| ปี 2568 | ปี 2567 | ปี 2566 | |
| Energy consumption by the organization | |||
| Natural gas | 282,623,125.56 | 323,057,100.82 | 322,053,733.21 |
| Fuel oil | 1,110,355.55 | 433,933.92 | 123,441.53 |
| Diesel fuel | |||
| – for electricity generation | 330,212.44 | 1,827,952.84 | 6,561,774.28 |
| – for vehicles | 218,966.11 | 179,550.67 | 114,798.21 |
| Gasoline | |||
| – for vehicles | 9,260.85 | 10,179.06 | 10,873.19 |
| Lignite coal | 177,448,996.64 | 179,720,943.36 | 174,050,029.76 |
| A: Total non-renewable fuel consumption | 461,740,917.14 | 505,229,660.68 | 502,914,650.18 |
| Palm oil | – | – | – |
| B: Total renewable fuel consumption | – | – | – |
| Energy purchased for use within the organization | |||
| Electricity | 542,752,561.14 | 553,842,288.75 | 455,813,688.68 |
| C: Total Energy Purchased for Use within the Organization | 542,752,561.14 | 553,842,288.75 | 455,813,688.68 |
| Self-generated energy not used within the organization | |||
| Electricity | – | – | – |
| D: Total self-generated energy not used within the organization | – | – | – |
| E: Energy sold | 749,935,290.76 | 778,042,122.87 | 733,951,374.09 |
| Total net energy consumption within the organization | 254,558,187.53 | 281,029,826.57 | 224,776,964.78 |
Notes
– Total net energy consumption within the organization = A + B + C + D – E
– 1 million Btu is equivalent to 1.05505585262 gigajoules; 1 kilowatt-hour of electricity is equivalent to 0.00360 gigajoules; 1 liter of diesel fuel for vehicles is equivalent to 36.42 megajoules; and 1 liter of gasoline for vehicles is equivalent to 31.48 megajoules, according to the Energy Policy and Planning Office, Ministry of Energy.
– 1 cubic foot of dry natural gas is equivalent to 0.98 megajoules; 1 kilogram of coal is equivalent to 14.14 megajoules; 1 liter of fuel oil is equivalent to 41.13 megajoules; and 1 liter of diesel fuel for electricity generation is equivalent to 38.00 megajoules, calculated based on EGAT’s 2025 Fuel Consumption Report.
– The figures are based on fuel input before electricity generation and have not been adjusted for generation losses, resulting in relatively high energy consumption figures.
Energy consumption outside the organization
| Item | Purchased energy (GWh) | ||
| 2025 | 2024 | 2023 | |
| Independent power producers (IPP) | 58,954.05 | 64,586.32 | 41,134.90 |
| Small power producers (SPP) | 52,674.67 | 53,273.71 | 52,674.86 |
| Foreign power producers | 39,135.87 | 35,985.05 | 32,805.15 |
| Total | 150,764.60 | 153,845.08 | 126,614.91 |
| (542,752,561.14 gigajoules) | (553,842,288.75 gigajoules) | (455,813,688.68 gigajoules) | |
Note
– 1 kilowatt-hour of electricity is equivalent to 0.00360 gigajoules.
Energy Intensity
| Item | 2025 | 2024 | 2023 |
| Total net energy consumption within the organization (GJ) | 254,558,187.53 | 281,029,826.57 | 224,776,964.78 |
| Total annual electricity generation (kWh) | 61,231,079,808.00 | 65,857,319,327.73 | 67,075,981,221.02 |
| Energy intensity (GJ/kWh) | 0.0042 | 0.0043 | 0.0034 |
Notes
– Energy intensity is calculated by comparing energy consumption within the organization with total annual electricity generation
– Total annual electricity generation refers to Net Actual Generation, calculated as gross electricity generation (Gross Actual Generation) less electricity used in the generation process (Station Service)