High Voltage Direct Current (HVDC) systems enable utilities to move more power further, efficiently integrate renewables, interconnect grids, and improve network performance. HVDC systems utilize power electronics technology to convert AC and DC voltage and are ideal for supporting existing systems or building new power highways.


GE Vernova provides solutions that offer grid operators the ability to provide reactive power support, enhance controllability, improve stability and increase power transfer capability of AC transmission systems.


GE Vernova's Grid Solutions' EBoP systems cater to all types of project requirements including supplying equipment, engineered packages, and full engineering, procurement and construction (EPC) implementations.


GE Vernova offers solutions for a variety of substation projects and applications, including Modular Substation Automation Systems, utility and industrial substation projects, as well as DC substation solutions.


The energy landscape today is changing, this is being led by the current industry trends of Decarbonization, Digitization, Decentralization and Electrification. Discover how GE Vernova is working with utility, consumer and industrial customers to design and deploy tailored Microgrid and Distributed Energy Resource (DER) Management solutions.


GE Vernova offers a wide range of transformer solutions for the utility, industrial, commercial, residential and energy markets. These solutions feature flexible, reliable and robust designs to support a wide range of applications. With units operating in some of the most demanding electrical environments around the world, GE Vernova designs and delivers transformer solutions that provide among the highest level of performance and reliability to meet rigorous operating requirements.


GE Vernova provides GIS solutions from 50 kV to 800 kV, along with secondary products to maximize switchgear and network operation. The portfolio includes a full range of SF6 GIS as well as g3 (SF6-free) GIS at 145 kV and 420 kV voltage levels for utilities and industries worldwide.


GE Vernova is one of the top circuit breaker suppliers in the world. Our products include a range of live tank circuit breakers (up to 800 kV), dead tank circuit breakers (up to 550 kV), as well as hybrid and compact switchgear assemblies. We also provide solutions for power generation applications with our generator circuit breakers for installations up to 1,500 MW.


GE Vernova is a global market leader for disconnectors (disconnect switches) since 1960, with 8 product facilities in 7 countries and hundreds of thousands installations in more than 130 countries around the world. The portfolio includes disconnectors for AC applications (up to 1,200 kV), for DC applications (up to 1,000 kV) and for railway applications. We also offer power connectors to connect two or more conductors for a continuous electrical path.


GE Vernova is an industry leader in the design and manufacturing of high, medium and low voltage instrument transformers. With more than 100 years of experience, We offer a broad array of standard and high accuracy models for revenue metering and system protection applications. The portfolio of instrument transformers ranges from low voltage at 600 V suitable for industrial and high accuracy revenue metering, all the way up to high voltage at 1,200 kV. The portfolio also includes line traps and digital instrument transformers.


For a century, utilities have relied on us to deliver electrical products and services to meet their quality, durability and performance needs. Our capacitor and reactor product lines are an integral part of our portfolio. We provide power capacitors that meet ANSI, IEEE and IEC standards, and our low voltage capacitors are UL listed. Ratings range from 1 kvar to 500 MVAR, and from 240 volts to 500 KV.


GE Vernova provides a broad range of bushings and surge arresters to help protect electrical assets. The bushings portfolio includes AC and DC solutions that enable long life, high reliability and installation flexibility. GE’s Tranquell surge arresters are ideal for distribution and EHV applications up to 612kV, and are available as polymer and porcelain station and intermediate class IEEE/ANSI C62.11.

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GE Vernova offers a wide range of solutions to monitor and manage critical assets on the electrical grid, detect and diagnose issues and provide expert information and services to customers. Our asset monitoring and diagnostics portfolio includes solutions for single- and multi-gas transformer DGA, enhanced transformer solutions and switchgear monitoring, as well as software and services.


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GE Vernova's Critical Infrastructure Communications solutions deliver comprehensive networks that are designed to be secure, flexible, and tailored to meet customers' objectives and unique geographic requirements.


GE Vernova's comprehensive portfolio of solutions for implementing and managing a substation.


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Business environment is constantly transforming for substation owners but the need to deliver consistent outcomes remains. That’s where a Flexible Service Agreement can help. By partnering with GE Vernova on a long term, customers can realize the full potential of their electrical substations and network assets while balancing performance and investment, along with predictable costs and flexible billing arrangements, letting them get back to focusing on what matters.


Energy costs are significant expenses for utilities and industries at large, particularly those that are energy-intensive or operate heavy machinery. Between 5% and 25%* of the expenses in these organizations are allocated to energy payments, with up to 15%** of this energy consumption being wasted during operations.


GE’s innovative and high-quality services help maintain and optimize high-voltage electrical assets throughout their entire lifecycle. Leveraging the design and manufacturing knowledge of our engineers, the customized service solutions ensure substations and networks perform as planned. Experts deliver services for applications across the power system, keeping assets up-to-date, safe, reliable and efficient while improving customers’ return-on-investment.


GE Vernova provides a full range of services & support tailored to meet a broad range of power system needs across utility and industrial applications. With deep domain knowledge and industry expertise GE’s service application engineers and technical specialists can help plan, design, operate, maintain, and modernize your protection, control, monitoring and automation systems.


GE Vernova provides comprehensive services throughout the systems lifecycle. The services can be provided by our local team and with the support of our global Competence Centers when the equipment is installed, during the warranty period and beyond.


Our technical experts are ready to equip customers with the knowledge needed to effectively manage their critical assets and systems, and increase their return on product investments. Our training courses are offered in a variety of ways, including online, onsite at customer locations, and in our state-of-the art training centers around the world.

GE Vernova provides a vast array of support and service offerings to help customers build, deploy, maintain and service their networks. Our highly skilled engineers and technicians provide front line support for customers across our product portfolio, including protection and control solutions, industrial communications networks, asset monitoring and diagnostics and software solutions.


GE Vernova's Grid Solutions' Testing Laboratories enable manufacturers and end users to test their primary equipment by leveraging deep domain expertise and testing facilities, to develop enhanced high voltage products and certify their capabilities before market introductions.


GE Vernova delivers materials and eco-design studies for high voltage solutions to accelerate insulation and environmental innovation. GE’s services provide the expertise and methods that enable new value to support customer engineering, sourcing, quality control and EHS activities.


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The oil and gas industry is evolving at a rate never seen before, facing shifting pricing levels, ever-changing regulatory requirements, and increased environmental consciousness. Through reliable, safe, and innovative solutions and a holistic service offering, GE Vernova can help the energy sector thrive in this changing reality.


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Mining companies require secure communications, efficient asset performance management, and dependable, innovative technology to protect their critical assets. GE Vernova offers a broad product portfolio to help you through each step of the mining process – safely and reliably.

 Home  Systems & Services  FACTS  Synchronous Condenser

Synchronous Condenser

Synchronous Condenser Systems

Cost Effective Power Transfer

GE’s Synchronous Condenser Systems are engineered and designed to provide a highly reliable and efficient solution to address reactive compensation and voltage support requirements, providing transmission operators an optimized solution for cost, performance and operational flexibility.

GE’s Synchronous Condensers are modular, air-cooled and rated for any range up to 300Mvar+ per machine. The solution can provide both steady state and dynamic support to the power system efficiently. GE machines can be easily combined in 2 or 3 unit sets to offer utilities reliability, ease of maintenance and operational flexibility.

Overview GE advantage Key benefits Components Typical applications Customer case studies
Today’s Challenging Environment

For most utilities ensuring grid reliability, efficiency, and security is a primary concern. As the grid evolves and load profiles change, stresses are being put onto transmission and distribution networks, making the work of grid management much more challenging. Globally, utilities are facing many grid challenges and market condition changes including:

  • Changes in generation mix
  • Decrease in conventional generation
  • Increase in renewable and distributed generation
  • Environmental and regulatory policy changes, driving the retirement of traditional coal generating stations

These challenges have an operational impact on the electrical infrastructure, in particular creating an overall deficiency in:

  • Reactive compensation support
  • Voltage support
  • System inertia
  • Low short circuit ratios on the network

GE’s Solution

GE offers transmission utilities a simple and reliable solution to address reactive compensation and voltage support requirements. Our newly re-designed motor based Synchronous Condensers are custom designed to provide transmission operators with a proven, robust and reliable solution.

GE Synchronous Condenser Overview
Ratings Range from 10 to 300 MVAr+ per machine

Round 2-Pole or Solid Salient Pole


2, 4 or 6

Excitation Static or Brushless
Starting Full Voltage, Reduced Voltage, Reactor start, Pony Motor
The GE Advantage

GE’s Synchronous Condenser Systems are engineered and designed to provide a highly reliable and efficient solution, providing an optimized solution for cost, performance and operational flexibility.

Modular design resulting in operational flexibility and decreased down time
GE has combined multiple synchronous condenser machines into systems that allow for reduced overall footprint, customize MVAr ratings and maintenance flexibility for utilities to reduce operational downtime.

Robust design with extended life resulting in minimal maintenance
GE synchronous condensers have superior construction, resulting in high efficiency, reliability, and provide easy access for routine maintenance and low vibration for a long life.

Customized design and use of innovate technology resulting in increased reliability and reduced risk of failure
Unique forged integral pole tip design well suited to high load inertia applications. Low mechanical stress is achieved through:

  • Fewer loose components
  • Improved mechanical stability
  • Reduced hot spots during starting
  • No pole screw locking concerns
  • No differential thermal expansion problems
  • Proven experience including the world’s largest 1,800rpm motor

  • Extensive experience resulting in seamless integration into the utility transmission grid GE leads the industry with more than 100 years of experience and the proven synchronous condenser design has been applied in over 200 applications.

Key Benefits of GE’s Synchronous Condensers
Short-term Overload Capability Short-term Overload Capability
The GE Synchronous Condenser has a large current overload capability. which can provide beneficial system support during emergencies or short term contingencies. As can be seen below, a GE Synchronous Condenser can provide more than two times its rating for up to 10 seconds. The machine’s significant overload capability can be accounted for in choosing the size of the machine required.

  Low Voltage Ride Through Low Voltage Ride Through
The GE Synchronous Condenser system has the ability to remain connected and to provide the necessary system benefits even under extreme low voltage contingencies. Mechanical inertia combined with state of the art excitation provides smooth reliable support that is naturally compatible with generation. Power electronic-based solutions do not have mechanical inertia and therefore cannot deliver comparable ride-through performance.
Provides System Inertia Provides System Inertia
Inertia is an inherent feature of a Synchronous Condenser, since it is a rotating machine.  The benefit of this inertia is improved frequency regulation where more renewable generation is being added or where existing generation is being retired.
  Response Time Response Time
GE Synchronous Condensers are fast enough to meet dynamic response requirements by using modern excitation and control systems. GE has integrated today’s advancements in control technologies into a proven machine design to make that solution better than ever.

Short Circuit Contribution Short Circuit Contribution
Synchronous Condensers provide real short circuit strength to the grid. Increased short circuit improves system stability with weak interconnections, facilitates system protection and can improve the operation of modern power electronics installations.
  Minimal Harmonic Generation Minimal Harmonic Generation
The Synchronous Condenser is not a source of harmonics and can even absorb harmonic currents. The lack of harmonics help make the synchronous condenser friendly to the surrounding grid and other devices. This provides for ease of integration into existing networks.

Minimal Network Interactions Minimal Network Interactions
The GE Synchronous Condenser mitigates system control interaction concern by utilizing traditional and robust electrical components combined with state of the art control architecture that does not cause undesirable interactions with your existing FACTS devices.

Installation & Maintenance Benefits


Fast Project Cycle Time Fast Project Cycle Time
The system only requires integration to commonly available power delivery components resulting in accelerated project cycle times. The design, manufacture, installation and commissioning of a Synchronous Condenser system can be completed within 16 months. GE’s experienced Power Projects team has 99% record of on-time project completion and greater than 98% on-budget execution.

  Proven Design and Increased Reliability Proven Design and Increased Reliability
The GE Synchronous Condenser is designed to provide trouble-free, reliable service and is a proven solution with more than 200 applications over nearly a century. Advancements in materials and manufacturing techniques, combined with modern control technologies, have greatly improved the reliability and functionality of this robust, time-tested solution. Operators can now utilize the simplicity of electro-mechanical system combined with the benefits of a state of the art excitation and control system in order to meet their grid support needs.
Minimal Maintenance Minimal Maintenance
The GE Synchronous Condensers proven design requires minimum maintenance resulting in minimal operating costs and reduced total cost of ownership.

Core Components
GE’s Synchronous Condenser system consists of components commonly used in electric utilities and industrial facilities, with proven robustness and reliability.

GE’s Synchronous Condenser System - core components


Integrated Intelligent Controls

  Integrated Intelligent Controls
Control Systems & Protection Relays Control Systems & Protection Relays
  • Proven controls architecture
  • Multilin multi-function digital protection relays
  • Secure communications infrastructure
  • Human Machine Interface (HMI) operator friendly
  • Digital solid state controls
  Power Delivery Equipment Power Delivery Equipment
  • Generator Step Up (GSU) transformer
  • HV/MV circuit breakers & switches
  • Ancillary systems (lube oil skid)
  • Starting reactors
  • Instrument transformers (CT/VT)


Typical Applications


  • Provides Short Circuit Strength
  • Dynamic reactive power support (voltage regulation)
  • Reduces local harmonic distortion (filter)


  • Improves or increases short circuit ratio (SCR)
  • Dynamic voltage support
  • Can improve and extend wind plant capacity ratings
  • Provides inertia to improve frequency regulation

Synch Condenser Upgrades

Synch Condenser Upgrades
  • Higher reliability and efficiency
  • Lower total cost of ownership
  • Modern controls and excitation – improved response time


Grid Code Compliance

Grid Code Compliance
  • Enhanced ROCOF (Rate of Change of Frequency)
  • Improved LVRT (Low Voltage Ride Through)

Grid Support

Grid Support
  • Local voltage support during contingencies and faults
  • Provides short term overload capability
  • Improves weak AC grid performance
  • EHV cables
  • Excessive shunt compensation
  • Weak AC Grid


  • Condenser can replace the dynamic voltage regulation and inertia from retired units
  • Allows utility to maintain system performance and grid stability
  • EPA Coal Requirements
  • Once thru cooling requirements
  • Generation Retirements

Customer Case Studies

  Vermont Electric Company (VELCO)
Customer Name
Vermont Electric Company (VELCO)

Granite Substation, Vermont, USA

Application / Challenge:
As part of the Northwest Vermont Reliability Project a number of upgrades were investigated to provide for the reactive power needs at the Granite substation. Simulations indicated that the power system is very near a point of voltage instability. In the case of an outage of the Vermont Yankee – Coolidge 345kV line, a continuous reactive power control device is critical to prevent voltage collapse.

  • Qty (4) +25/-12.5 MVAr sync condensers
  • Qty (4) 25 MVAr shunt banks (MSC)
  • Qty (2) Phase shifting transformers
  • Integrated control system
Reasons cited for the synchronous condenser over static devices include low voltage ride through capability and the high short time overload characteristics. The overload capability of the condensers provides sufficient time for the mechanically switched 115kV shunt capacitors to be placed into service.
  Korea Electric Power Company (KEPCO)
Customer Name
Korea Electric Power Company (KEPCO)

Jeju Converter Station Jeju Island, Korea

Application / Challenge:
The function of a synchronous condenser system in a weak AC grid, and especially one that connects via an HVDC converter terminal, is to improve short circuit strength, provide inertia, and improve reliability.

GE supplied two +50/-25 MVAr synchronous condensers to KEPCO that allow the Chejuu-Haenam HVDC link to continue to cost effectively and efficiently provide power to the island.

With successful installation of the synchronous condensers, KEPCO will be able to retire their existing, converted gas turbine synchronous condensers and transport more power on the existing grid network.