Working Groups

ETN Working Groups connect the key stakeholders in the gas turbine community to address the issues through projects of common interest.

List of ETN topics of interest

The topics of interest listed below were submitted by the Project Board, the ETN Working Groups and other ETN initiatives. They are intended to be used as assignment or Master’s thesis topics. 

If required, ETN can provide support to identify potential collaboration with ETN Members in order to carry out studies associated to these topics.

For more details or to extend the list, please contact the ETN Office.


  • Comparison of several power plant technologies, from a lifecycle point of view
  • Literature surveys
    • Future energy scenarios based on Hydrogen;
    • Comparison of H2 storage technologies, cost included;
    • Different size of H2 power plant and their investment cost;
  • Application scenarios for H2 GT (incl. H2 supply chains – source, volume, cost)
  • Role of hydrogen-fired plant in the future system, and consequences: technical developments needed to meet these future boundary conditions

Technical Committees

ETN Technical Committees (TCs) cover the most crucial areas of future gas turbine technology development. They serve as forums where the ETN members meet to share experiences and discuss ideas and initiatives. Individual projects can later be developed after the creation of dedicated Working Groups.


The decarbonisation of gas-fired power generation will be required in the coming years to meet the significant CO2 reduction targets of those countries where gas is a major contributor to the energy mix, while retaining the operational flexibility needed to balance the increased levels of generation from intermittent renewables. This extends from new build plants with integrated CO2 capture technologies, enhancements to improve efficiency/increase exhaust CO2 levels (exhaust gas recycle), firing of low CO2/high H2 fuels, the retrofit with CO2 capture of existing installed plants and advanced cycles, including oxy-firing.


Research areas include

  • Minimisation of CO2 emissions across the full operational range required for flexible operation through i) the development of flexible, high-efficiency cycles and ii) technological improvements to existing machines aimed at improved efficiency (with TC2).
  • Process integration to minimise the energy/cost penalties of implementing post combustion capture technologies of various types.
  • Performance and reliability impacts of exhaust gas recycle, with or without selective recycle, on combustion and hot gas paths materials.
  • Oxy-fired and other advanced gas turbine power cycles for improved efficiency combined with CO2 capture, including improved turbomachinery aerodynamic design/blade cooling for the changed hot gas path environments.
  • Materials and coatings technologies for high CO2/high steam hot gas path environments.
  • Impact of the integration of CO2 capture technologies on operational and fuel flexibility.
  • Impact of highly flexible operation on the capture rate and/r degradation of capture system.
  • Systems requirements of highly flexible operation on downstream components (CO2 compression transport and storage system).
  • Retrofit of CO2 capture technologies with existing gas turbine power installations.
  • Control and monitoring strategies for gas turbines with integrated CO2 capture.
  • Development of CO2 capture technologies suitable for gas turbine combined cycles.
  • Impact of increased operational flexibility on plant operating costs.


Improved performance of gas turbine components and intelligent system integration will enhance fuel efficiency and environmental performance of future power generation units.

To have gas turbines capable of operating in an efficient, safe and reliable manner utilising a wide range of fuels for a broad operational range whilst minimising polluting emission such as NOx and aiming at zero CO2 emissions.


Research areas include

  • Increased plant operational flexibility and efficiency, using retrofit solutions as well as new technologies;
  • Optimisation of the gas turbine efficiency over a wide operating range;
  • Development of hybrid gas turbine cycles (solar gas turbines, fuel cells, etc.);
  • Faster start-up, power ramping;
  • Materials and coatings technologies for high CO2/high steam hot gas path environments.
  • Impact of the integration of CO2 capture technologies on operational and fuel flexibility.


Achieve full insight in the mechanisms that have a negative effect on the performance of the engine, the individual components specifically, and understand how these mechanisms can be positively influenced by an alternative operation/maintenance strategy. The interaction of the different mechanisms will also be considered.

With the knowledge collected, develop – in line with the requirements – alternative, improved alloy – coating combinations that can be used in the current and future turbine designs and that perform in accordance with the demands stated for that design.


Research areas include

  • Identification of the life limiting degradation models of the key gas turbine engine components;
  • Extension of the predictability and modeling of the key degradation mechanisms (e.g. bondcoat oxidation or spallation of TBCs during cyclic operation); monitoring of such damage is covered by TC4;
  • Extension of the limits of reparability by improved insight into the occurrence and behavior of the failure mechanisms;
  • Consequences of repair processes on future component lifetimes;


Optimisation of the overall gas turbine power plant equipment effectiveness (reliability, availability, maintainability and performance), by a systematic coordination of all activities and an optimum use of the knowledge embedded in the organisation, in order to properly define the time to next service for flexible operating gas turbines and to go beyond 25000 hours of continuous operation.


Research areas include

  • Replacement of boroscope inspection (such as pyrometer);
  • Control and predictive measurement of emissions;
  • Increased machine monitoring with advanced instrumentation for damage detection and monitoring of components;
  • Risk Based Decision Making;


TC5 does not just look at the technical detail of the gas turbine alone, but looks at the bigger picture. Profitable operation of the gas turbine based plants requires optimum interaction between all components on the plant and aligned operation and maintenance practices. In addition, plant design and processes need to adapt to evolving market requirements.

This can be achieved by developing best practices in different areas and methods to benchmark plant design and processes against these best practices. The result will allow to make risk based decisions through which an organization can optimally and sustainably manages its assets and asset systems, their associated performance, risks and expenditures over their life cycles, for the purpose of achieving their organizational strategic plan. This is needed to adapt in a flexible and competitive manner to uncertainty and changes in the market environment.


Research areas include

  1. Benchmarking and identification of best practices
    • Capture and extract  value out of data to allow characterization and benchmarking of plant design and processes.
    • Research areas include RAM, process analysis, market analysis, EHS, knowledge management and condition assessment based on integration of different information sources.
  2. Decision making
    • Because it is usually not possible to have the complete information, it becomes necessary to make operational decisions in a context of uncertainty. Decision making techniques need to be applicable to all the main systems of gas turbine based  plants, such as the gas turbine, HRSG, generator, steam turbine, steam cycle, mechanical BOP and electrical systems. Many of these techniques are already commonly used in other industries, such as the chemical industry, the petroleum industry or aviation.
    • Research areas include operational decision making tools and risk based techniques such as risk based maintenance (RBM), risk based inspection (RBI), condition based maintenance and reliability centered maintenance.
  3. Lifecycle optimization
    • Long-term decisions making requires a transparent overview of best practices and methods to optimize competitiveness over the complete plant lifecycle, from design to decommissioning. Optimization can also be extended to fleet level for owners of large fleets of power plants.
    • Research areas and best practices may cover operation & maintenance practices, operation concepts, market modeling, controls, plant cycle design, design of critical components, EHS, workforce development or spares management.

Submit an initiative

Read this document and send your project outline back to Ugo Simeoni by email.




First connection?

Set your password
Click here to register


If you already have an account, click here to login