LM2500+G4 SAC 50Hz SC Gas Turbine
Gas Turbine
Also known as:
Turbine, Combustion Turbine



LM2500+G4 SAC 50Hz SC Gas Turbine
Gas Turbine
Also known as:
Turbine, Combustion TurbineBuy
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The LM2500+G4 SAC 50Hz Simple Cycle gas turbine is commonly used in industrial power applications. It features a Single Annular Combustor (SAC) for reliable, proven combustion performance in simple cycle setups.Sign in
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Executive Summary
The LM2500+G4 SAC 50Hz Simple Cycle is a reliable and efficient gas turbine solution well-suited for oil and gas applications, both onshore and offshore. Built on the trusted LM2500+ platform, the +G4 version delivers approximately 10% more power through increased airflow and enhanced turbine cooling—without compromising durability.
It uses a Single Annular Combustor (SAC), a robust and straightforward combustion system ideal for environments where emissions regulations are moderate or where water or steam injection is available for NOx control. Its compatibility with a variety of liquid and gas fuels, combined with strong performance in wide-ranging ambient conditions, makes it a dependable choice for mechanical drive or power generation in upstream, midstream, and downstream operations.
Technical Specifications
Net Output | 34.3 MW |
Net Heat Rate | 9870 Btu/kWh |
Net Efficiency | 34.6% |
Fast Start Capability | 5 Minutes |
High Pressure Compressor | 17-stage; added zero-stage blisk |
Speed | 6,100 rpm |
Exhaust temperature | 543 ºC |
NOx emissions | 25 ppm |
Power turbine speed | 3600 rpm |
Exhaust gas temperature | 1,042°F (549°C) |
Features and Benefits
- Maximize repairs inside the module with the ability to separate gas generator and power turbine
- Two-spool engine has no restrictions for cold start-up or operation in harsh environments
- It can operate on a wide range of fuels
- The SAC technology helps to achieve low NOx and CO emissions.
- High Reliability
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Detailed Description
The LM2500+G4 SAC 50Hz Simple Cycle is a fourth-generation aeroderivative gas turbine of the LM2500. Designed for industrial power applications, including those in the oil and gas sector, it delivers more output and greater thermal efficiency while retaining the ease of maintenance and high reliability the LM2500 series is known for.
In a simple cycle configuration, the gas turbine generates power directly by expanding hot gases through the turbine stages, without recovering heat for additional power generation. This design is favored for its simplicity, lower capital cost, faster start-up, and suitability for mobile or remote applications.
The LM2500+G4 improves upon its predecessor by increasing airflow and turbine cooling capacity, allowing for higher operating temperatures. These changes result in up to 40% thermal efficiency in simple cycle mode—an impressive figure for this class of turbine. This translates to improved fuel usage and reduced operational costs over time.
The engine features a Single Annular Combustor (SAC), which supports stable combustion with low emissions of nitrogen oxides (NOx) and carbon monoxide (CO). The combustor is also designed for durability and long life, with easily replaceable fuel nozzles and a thermal barrier coating for resistance to high temperatures and corrosion.
Its two-spool design means the engine has no cold start limitations, making it well-suited for harsh or variable environments. The power turbine and gas generator can be separated, allowing for easier in-module repairs and less downtime.
Overall, the LM2500+G4 SAC 50Hz Simple Cycle offers a balance of power, efficiency, and maintainability, making it an attractive solution for power generation and mechanical drive needs in industrial, onshore, and offshore oil and gas operations.
Engineering Data

