SGen-1000A            generator series

Proven two-pole air-cooled generator for                          large power applications

Excellent performance and outstanding efficiency

Our air-cooled generator series offers you a competitive advantage by providing ratings of up to 370 MVA with operationally proven technology. The SGen-1000A series with 180–370 MVA is optimized for large power applications. We continuously improve our generators and focus on increased reliability, improved serviceability, high efficiency, and optimum plant integration. Our generator designs benefit from more than 150 years of engineering experience going back to the invention of the electrical generator by Werner von Siemens in 1866.
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Highlights of the SGen-1000A series generator

The entire SGen-1000A series is optimized for world-class efficiency of up to 98.9% and stability during load changes and flexible operation. They are designed for 10,000 start/stop cycles during their operational life, making them a cost-effective alternative to hydrogen- or water-cooled generators for industrial applications up to 370 MVA.

Our experts have designed a product line that meets all major market and application requirements. By applying our modular design philosophy and using pre-designed options, we can customize your generator the way you need it with minimum lead time.

The SGen-1000A series is designed and manufactured for ease of use. Our robust and proven design features pre-assembled components to shorten the commissioning period. The self-supporting structure of the base frame with integrated cover, machine auxiliaries, and exciter set facilitates easy on-site installation.

There are more than 1,000 air-cooled generators in operation. Our design, engineering, sales, project management, manufacturing and testing experts work closely together in one location in Erfurt, Germany. By using the latest manufacturing technology and process automation we ensure outstanding quality.

Technology overview

Our generators are designed using our building-block system with optimized diameter and length sizing to achieve perfect alignment with your plant and the grid requirements. Grid studies can be performed. Many more options are available including variants of the cooling system and the position of the generator leads. All parts and connections are readily accessible and the enclosure can be easily removed for installation or maintenance.

Flexibility and customization

Our modular design philosophy, using pre-designed options, ensures that we can customize your generator the way you need it. The generator matches your turbine's performance and provides margin for operational flexibility.

Robust design

Mechanical forces from operation and transient events, such as short circuits, are safely transmitted from the stator core to the base frame and foundation via welded-on spring elements. The self-supporting structure of the base frame with integrated cover, machine auxiliaries and exciter set allows for easy on-site installation.

Service and maintenance

Our proven installation and maintenance concept sets a benchmark in reliability and availability. Professional installation of the generators ensures world-class availability and reliability for the entire lifecycle of the generator. For minimized downtime, we align the maintenance intervals of the generator with those of the turbine.

Remote Diagnostic Service

Remote Diagnostic Service (RDS) help you to optimize your asset production by turning data into value. In a proactive approach, we monitor the complete range of oil and gas, and industrial rotating equipment in more than 80 countries to identify a potential problem before it impacts operation. We aim to maximize the availability and reliability of our customers' installed base.

Technical data


The SGen-100A-2P is suitable for the following applications and industries:

Air-cooled generators fit to most steam and gas turbines on the market

Flexible gas and steam power plants will remain a key component of a demand-driven power supply.
They form the solid foundation of a diverse and clean energy mix – indispensable for meeting the world's current and future challenges. Our air-cooled generators complement the turbine packages of any manufacturer and meet grid and environmental requirements as well as specific customer needs.

Operational safety and special explosion protection solutions

Oil and gas power applications, especially offshore applications, require low-weight generators with explosion protection solutions (e.g. pressurized or non-sparking) and entail stringent electrical standards. We can supply solutions for a broad variety of applications.

Replacement of older, high-maintenance generators

With our Footprint™ generator concept we offer solutions to replace older, high-maintenance water-, hydrogen- or air-cooled generators with state-of-the-art SGen-100A-2P generators. The modular design of our generators can be adapted to match existing foundations and plant interfaces to minimize reconstruction costs and installation time. This can be a time- and cost-effective alternative to repairing an existing generator.

Transmission grid stabilization

Rotating synchronous condensers are a proven, reliable solution for ancillary grid services guaranteeing frequency and voltage stability, plus the ability to ride through grid disturbances. Today’s emerging power systems are dominated by converter connected renewable power producers which are susceptible to decreased short circuit power and system inertia, making them more sensitive to electrical faults and sudden load imbalances. Rotating synchronous condensers are significantly less sensitive to these issues. 

Natural sources for power generation

You can benefit from our fleet experience using natural sources for energy production. Adapted for steam turbines, our generators are used for biomass, waste-to-energy, concentrated solar power (CSP) and geothermal power plants.

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Proven in commercial operation: SGen-100A-2P/1000A series reference highlights

More than 1,000 SGen-100A-2P/SGen-1000A generators are in commercial operation around the globe.
Do you have a question regarding our products, solutions and services?

Contact us