Modernization, Reliability and Availability Programs for the FT4/GG4 Fleet

For decades TTS and WWT (Worldwide Turbines) have been offering products and services to gas turbine operators globally.  Now, more than ever, in this changing energy environment, a reliable and flexible asset is paramount.  Together TTS and WWT offer a complete list of programs which can make your unit reliable, flexible and completely independent from the OEM.

Upgrades and Modifications

  • Complete Overhaul / Hot Section of GG4A&C Type Gas Generator and Free Turbine
  • Engine test cell
  • Full engine accessory repairs
  • Field Services (mechanical, controls) / Maintenance Contracts
  • Parts support
  • Engine Exchange program / Engine sales and leasing
  • Fuel Nozzle and Manifold overhaul and repair
  • Control System upgrades / modifications
  • Fuel system conversions (Gas fuel, Liquid Fuel, Dual Fuel)
  • Electronic Fuel Valve(s) Upgrades
  • Emissions Abatement Programs (Water Injection / SCR)
  • Instrumentation and Auxiliary system upgrades and modifications
  • Remote Support and Remote Monitoring


Gas Turbine Technology is in a constant state of development and modernization with new materials, components, control techniques and protection systems being continually updated. The application of these technological advances to the existing installed fleet results in many benefits including:

  • Increased reliability
  • Increased efficiency
  • Extended asset life
  • Meeting OSHA and other industry standards for gas turbine operations
  • Reduced Operating and maintenance costs
  • Access to leading technologies in the gas turbine market
  • Engineering expertise with on-site and remote calibration and installations
  • On-time delivery of components and services

Expert, Innovative, Energy Savvy

The demand for energy is not going away any time soon, and gas turbines are a stable, viable source of consistent energy output.  Market factors that are driving the need for gas turbine efficiency and reliability include:  available retired units, low-cost fuel in international markets, and the need for fast-start gas turbines.

Making modifications and upgrades to existing assets is usually simple and the cost-benefit equation generally improves significantly.  For those looking to learn more about making your gas turbine reliable, available and efficient, reach out for a consultation with the teams at TTS and Worldwide Turbines.

About Worldwide Turbines

As an independent gas turbine service company, Worldwide Turbines keeps customers operational.  Nothing is more important that staying online.  They offer customers resources from single component parts to entire engine sections for customers in the gas turbine sector.  Their ingenuity, expertise and agile customer service provide comprehensive assistance to meet the demands and time tables of their customers.

About TTS Power

Since 1983, TTS has provided the power generation industry with quality, cost-effective alternatives to all of the major OEMs, from General Electric to Westinghouse. With over 400 clients worldwide, they have a reputation for integrity and turbine engineering expertise.  They offer innovative control solutions, modernization and upgrade services to the mature gas turbine market.

Ways to Take Advantage of High Value Generating Opportunities

Many factors have converged over the last few years to increase the opportunities for generating plants to take advantage of high spot market power prices. There is increasing value in improving the ability of existing gas turbines units to get on-line quickly (fast start) and/or to produce more power when they are on-line.

TTS has supported customers in identifying multiple ways to achieve both of these goals. The strategies to support fast start include reconfiguring fuel systems to eliminate purge requirements during startup, addressing other startup delay issues and improving start reliability and repeatability.

Opportunities to increase power output include optimizing existing firing temperature settings, increasing mass flow, implementing and optimizing peak firing operation and associated combustion system performance. Our recent webinar covers all of these strategies and the associated cost/benefit estimates.  You can view our webinar here:

In our latest blog, we are reviewing the points we covered in our CCJ webinar. Learn more about how to take advantage of opportunities in the market with minimal upgrades and modifications to keep your legacy asset relevant.

Market Drivers

  1. Electricity consumption – As coal plants are retired and phased out, electricity demand continues to grow across the country.
  2. Vintage Units – If they are reliable, flexible and available, vintage gas fire turbines can fill the need in the energy market.
  3. Renewables – while they are projected to make up to 50% of power generation in the United States by 2035, they will always need a reliable backup source due to unpredictability.
  4. New power plant – Planning and building a new plant is time-consuming, expensive and requires navigating regulatory and planning permissions.
  5. Natural Gas – Compared with coal, natural gas is a cheap and clean fossil fuel.  Likewise, it will continue to serve the energy market for the future.
  6. Margin – The reserve margin is decreasing.
  7. Market Opportunities – Spot market opportunities are increasing the high value generation windows.  Fast start opportunities increase with the increase of renewable capacity increases.

High-Value Generation Opportunities

The goal is to get the most out of your legacy machinery.  This includes optimizing your plant with updated capabilities and technology to produce more output when market prices are higher.

This includes Fast Start programs, which require plants to be ready to output power in as little as 10 minutes to maintain grid stability.

Ways to Get Output Optimization

Optimize existing firing temperature – There are several reasons the firing temperature can be sub-optimal:

  • Original design was too conservative
  • Changes in unit mass flow
  • Changes in unit components
  • Fuel changes
  • Unit configuration changes
  • Tuning changes

Thermodynamic modeling of the unit can identify optimum firing temperatures.  It can gain significant MW with only control setting changes.  Ultimately, what you are doing is moving the temperature control line based on the outcome of your analysis.

Increase mass flow – This is the most common way to increase output in legacy assets.  Increasing mass flow is important for gas turbines because their output is a function of the mass flow through the compressor.  As the air temperature goes down, the air gets denser on a base load.  Thus, as the temperature goes down, you get more output from the machinery.  Options to do this include the following:

  • Inlet Fogging
  • Inlet Cooling (Evaporative & Refrigeration)
  • Wet Compression
  • Water / Steam Injection
  • Air Injection
  • IGV Adjustment (7EA/7FA)

The cost-to-benefit varies with the ambient conditions, access to suitable water/steam and Initial Unit Setup.  It depends on what it already available in the environment for the power plant.  Optimizing firing temperature when implementing these approaches will further increase output.

Implement peak firing – Most units are designed for a specific firing temperature where you operate base-load and you have a predictable maintenance life and maintenance factor for all components.  The goal with peak firing is to increase the firing temperature to result in an increase in output.  Features of this upgrade include:

  • “Peak” mode is normally selectable as an alternative to “Base” Operation
  • Operating in the Peak Range may shorten maintenance intervals
  • Firing temperature increase is limited to prevent component damage
  • Setting of Peak can be automatic or manual

The benefit of this upgrade is that it is a simple way to take advantage of high spot market prices.

Optimize peak firing – The goal of optimizing peak firing is to take advantage of what an existing unit can do, what the emissions capabilities are, and what the permitting is on your application.

  • Units must operate within site permit emissions limits
  • Peak firing may cause emissions to exceed limits
  • Need to understand what the site permit allows, hourly versus daily/monthly rolling average limits
  • Variable peak approach allows operation up to the peak firing value while the unit remains in compliance
  • If compliance is not possible at peak firing value, variable peak approach allows maximum firing temperature while maintaining compliance
  • CC units with SCR allow for additional optimization and for additional output

Fast Start

Asset Flexibility

The goal is to make assets, especially older assets, more flexible.  It improves the ability of the generation fleet to change its output (ramp) rapidly, start and stop with short notice and achieve a low minimum turn-down level.  There are two categories for asset flexibility:

  1. Non-Spinning Reserve:  Generation and responsive load that is off-line but can be fully responsive within 30 minutes.
  2. Supplemental Reserve:  Generation and responsive load that is off-line but can be fully responsive within 10 minutes.  Premium is available for 10 minute start in many markets.

The chart below gives a general overview of Start up time and loading rates for diesel and motor devices.

Diesel & Motor device load up and start times table

Getting to 10 Minutes

There are different strategies for different units, but the following are some of the most common implementations for most units:

Eliminate purge, implement changes to comply with NFPA 85 Purge Credit Standard – After a normal stop, the unit is purged and this purge counts as the purge for the next start, resulting in significant start up time savings.  NFPA(R) 85 2015 has specific requirements that must be adhered to in order to establish and maintain the Purge Credit.

Implement Fast Load – Increase the loading rate; a review of the generator capability is required.  Load in extended lean-lean and fast transfer to premix (FTP).

Eliminate “Warm-up” delays –  Increase the time it takes to start a turbine, effectively eliminating delays for the plant to be available for output.

Market Opportunities Graph
Ensure unit start reliability – There are several modifications and upgrades to consider for improving starting reliability.

  • On-base device upgrade and rationalization
  • Rewires
  • Hydraulic/Pneumatic system removal/Fuel system simplification
  • Control system upgrade (turbine)
  • Excitation/Production system upgrade (electrical)
The chart below gives a summary of each potential upgrade and modification that could help ensure unit start reliability.  All plant managers should consider the cost/benefit for each modification that is relevant to their specific plant.

Potential Upgrades/Modifications System Benefit Drivers/Costs
On-Base Device Upgrade and Rationalization
  • “Low hanging fruit”. Simple and effective upgrade
  • Remove single point of failure and eliminate trips
  • Improve available information
  • Improved Reliability
  • Improved Availability
  • Reduced maintenance
  • Where a driver is present the benefit is high relative to cost for implementation of redundancy and replacement of critical items
  • Eliminate Grounds
  • Eliminate Canon Plugs
  • Eliminate Signal leakages
  • Improved Reliability
  • Improved Availability
  • Reduced maintenance
  • With one or more drivers cost is low for benefits gained
Hydraulic/Pneumatic System Removal/Fuel System Simplification
  • Elimination of Servos/Positioners
  • System Simplification (Single Valve)
  • Easier Setup/Calibration
  • Improved Reliability
  • Improved Availability
  • Greatly Improved Functionality and Flexibility
  • Without one or more drivers cost is high for benefits gained
  • With one or more drivers cost is low for benefits gained
Control System Upgrade (Turbine)
  • Resolve obsolescence and aging issues
  • Improved Reliability
  • Improved Availability
  • Greatly Improved Functionality and Flexibility
  • Improved data availability and retention – improved troubleshooting and operational data
  • Reduced maintenance costs
  • TMR usually isn’t worth it
  • Without one or more drivers cost is high for benefit gained
  • With one or more drivers, cost to benefit equation improves significantly
Excitation/Protection System Upgrade (Electrical)
  • System Simplification especially with replacement of individual protection relays
  • Easier setup and testing
  • Improved Reliability
  • Improved Availability
  • Greatly Improved Functionality and Flexibility
  • Improved data availability and retention
  • Lower Maintenance Costs
  • Without one or more drivers cost is high for benefit gained
  • With one or more drivers, cost to benefit equation improves significantly


TTS Stands with You

While the energy market continues to evolve, we are confident that fossil fuels will stay relevant well into the future for their reliability and accessibility.  If you are interested in learning more about how to make your turbine or legacy asset a high-value generation option, talk to our team members at TTS.  We are a team of engineers and technicians with over 30 years of experience providing high-value expertise to improve unit reliability and performance.  Call us at  407.677.0813 or contact  TTS Energy Services.



About the Presenters

Pat Begley, VP SalesHeadshot of Pat Begley, VP of Sales

Pat brings over 29 years of gas turbine experience to Turbine Technology Services.

Prior to his current role, Pat was employed by Sermatech Power Solutions serving as Executive Manager of Corporate Sales. In the 1990’s, Pat worked for TTS as Vice President of Corporate Sales and with HSDE Inc. as Manager of Industrial and Marine Business Development.

In his early career with General Electric, Chromalloy, Unitech and HSDE, Pat developed his extensive knowledge of heavy rotating equipment by performing engineering roles including Mechanical Field Service Engineer (GE and Chromalloy), Speedtronic Control System Service/Startup Engineer (GE and Chromalloy), PLC Control System Development Engineer (Unitech) and Controls Group Engineering Manager (HSDE).

Pat was born in Ireland. He earned his Bachelor’s degree in Mechanical Engineering from the University of Dublin and MBA from the University of Houston.

Pat Begley
VP, TTS Power
Phone/WhatsApp: +1 407.810.8997
Skype Address: tts_begley


Ricky Morgan, VP Engineering Headshot of Ricky Morgan, VP of Engineering

Ricky brings over 30 years of electrical and controls engineering experience and is responsible for all technical aspects of TTS’ products and services. Prior to joining TTS, Ricky was employed by Sermatech Power Solutions, serving as the International Executive Manager for the Middle East and previously as Vice President of Turbine Systems Engineering.

Ricky was born in Scotland, where he earned his Bachelor’s degree in Electrical and Electronic Engineering from Strathclyde University, Glasgow. More recently, he graduated from the University of Central Florida with his MBA.

Ricky Morgan
VP Engineering
Mobile: +1.407.399.0312
Skype Address: pfmorgan

TTS Remote Support for Combustion Tuning and Troubleshooting

During the COVID-19 lockdown orders, retail sales of electricity to the residential sector were about 9 percent higher than the typical heating and cooling demand. While everyone was at home, electric companies and energy generation facilities had to stay available and ready to respond to the increased demand from U.S. households. In order to keep operations running while considering the health and safety of their employees, many gas-fired turbine power plants opted for remote monitoring and troubleshooting options.

As a leader in innovation, TTS has been offering remote monitoring and support for over 30 years. In 1988, we were the first company to apply remote access systems to support and troubleshoot gas turbine operational failures. In these times of remote work, we want to offer our technical assistance and expertise to our customers through our Remote Tuning System. The TTS Remote Tuning System offers a secure, simple and adaptable remote monitoring system that will provide a high level of remote support to a customer without the need for an engineer or operator to be present on site.


The system components enhance administrative flexibility while maintaining a high level of security.

check mark icon   Remote Connectivity Over A Cellular 4G LTE Network

This network operates independent of the client’s network, so secure network barriers are maintained. Alternatively, connectivity can be established by connecting the equipment to a secure network where specific ports are opened to allow remote connectivity.

check mark icon   No Software To Install

The system does not install additional software onto a client’s computers. This design eliminates impact on the client’s computer systems and removes software compatibility issues.

check mark icon   Customizable

Remote Monitoring is highly customizable to fit NERC security requirements.

check mark icon   Pre-Configured Hardware by TTS

Once the system is connected, the 4G LTE router will establish a connection and provide a path for TTS personnel to connect via secure VPN. Via this VPN, TTS will have access to the connected equipment – this can be any combination of two Wi-Fi Webcams, or one KVM-Over IP [Keyboard, Video, Mouse].

Two Configuration Options for DLN Combustion Systems

The equipment described above has two configuration options for remote tuning of DLN combustion systems.

1) Utilize the KVM-Over-IP

2) No KVM-Over-IP

check mark icon The remote tuner can connect to the HMI computer to monitor turbine operation and make remote tuning adjustments in real time.

check mark icon The Wi-Fi Webcams can be directed at the CEMS display screen and/or at a stand-alone CDMS display screen (if present).

check mark icon This configuration provides the tuner with all required functionality and data monitoring to remotely tune a DLN system.

check mark icon The Wi-Fi Webcams can be directed at the HMI display and at the CEMS or CDMS display.

check mark icon The Webcams provide the tuner with real-time data monitoring capability required for tuning a DLN system.

check mark icon The customer would need to provide a person on-site, who would be in communication with the tuner via phone, to make the control system adjustments required for tuning, as directed by the tuner.


How It Works

TTS Remote Turning Infographic

If remote tuning is being conducted, once the connection is made and tested, the remote tuner and the operator can conduct the proper dynamics checks on the combustion chamber. The Operator can also perform any changes to the fuel scheduling necessary to optimize the efficiency of the combustion system while being observed, in real time, by the Combustion Tuner.

If system troubleshooting is being performed, the connection is established, and the Operator and Remote Technician can begin the troubleshooting process. As in the above, any adjustments and reactions can be directed and monitored by remote experts, in real time.



With TTS Remote Tuning, troubleshooting is secure, simple and innovative. The system can perform machine oversight, detect trends and issues and provide support. The benefits of this system will save time and money, while increasing efficiency. Here are a few more benefits:

  • Instant Response
  • No travel time or delay associated with a site engineer visit
  • Preventive maintenance
  • Lower the rise of crises and machinery downtime
  • Machine efficiency
  • Lower operating expenses
  • Extended intervals between outages
  • Fewer forced outages
  • Reduced repair time


How Can We Help You?

Contact TTS and speak with a specialist to discuss and evaluate your possible opportunities for gas turbine remote tuning and troubleshooting.

Call (407) 677-0813 to speak with a technician today.

Gas Turbine Reapplication: A Market Comeback

In recent years there has been a resurgence in existing gas turbine power plants being picked up and reapplied throughout the world. Many thousands of megawatts have recently been relocated from Asia to West Africa; Europe to Australia; Europe to East Africa; within USA; within West Africa; and so on…

Factors Driving Turbine Reapplication

Factors that have contributed to the return of this segment of the power market include the following: the availability of retired units; the emergence of newly available low-cost gas fuel in international markets; the need for fast-start gas turbines; and the ability to benefit once again from quickly installed units operating in the domestic US peaking power market.

The California ISO market’s demand for fast start power has triggered relocation projects in surrounding areas to provide power for that market. Also, the inconsistency of renewable power, particularly wind, in Texas ERCOT and other western states has created a need for back up for both power and for grid stability. This situation, combined with the abundance of natural gas, make the case for relocating fast start gas turbines and other gas fired generators into these areas.

Contributing to Dynamic Power Markets

The fast delivery of these reapplied gas turbines, with lower capital costs than new, and the ability to operate on a wide range of fuels make them an important solution to many of the opportunities in today’s dynamic power markets. The modular design of a gas turbine package, with a much smaller footprint per Mw than reciprocating engines, allows them to be quickly and easily installed in even the most remote locations. Although not having the same efficiency of today’s advanced-class gas turbines, these older units can still provide a very important contribution to emerging grids and the peaking power market.

Each relocation project has its own unique requirements. These may include the need for asset refurbishment, fuel conversions, frequency conversions (if moving between 50Hz and 60Hz countries), other upgrades and modifications, and installation of equipment necessary to allow the units to operate in compliance of local environmental regulations. Logistics are an extremely important part of a relocation project, with care taken to ensure dismantled equipment is identified, tagged and removed properly so as to ensure an efficient, low-cost installation at the new site.

TTS Energy Services: At the Forefront of Gas Turbine Reapplication

Many relocation projects are undertaken by entrepreneurial developers that recognize an opportunity to quickly provide cost-effective power to a specific market. However, these developers often do not have the existing technical and commercial infrastructure to efficiently deal with all aspects of building a power plant, as well as obtaining all the required contracts and permitting.

TTS Energy Services is at the forefront of the gas turbine relocation market. We are responsible for the relocation of close to 90 gas turbines having a total of almost 3,000 megawatts. We have been involved at all levels including turnkey Engineer / Procure / Construct (EPC) contracts, project management and design engineering, upgrade and modification services, cost control, project feasibility studies and site supervision.

With over 30 years of experience in the turbine relocation market, we are the ideal partner for any reapplication project.

How Can We Help You?

Contact TTS and speak with a specialist to discuss and evaluate your possible opportunities for gas turbine relocations, as well as to inquire about assistance with your current relocation project. Leave us a message or call +1 (407) 677-0813 to speak with an expert today.

CCJ 2020 Best Practices Award: Hermiston Generating Plant

Hydrogen purge remote activation helps keep employees safe

The Hermiston Generating Plant in Oregon was recently awarded the CCJ 2020 Best Practices Award for their installation of a hydrogen purge remote activation. TTS was proud to assist in this project, providing critical upgrades to the control system. The project provided greater safety for on-site engineers and improved automation which decreased plant downtime.

Read the full press release from CCJ of the project scope below:

Challenge. Provide an automatic remote means to purge a hydrogen-cooled generator without dispatching employees to the area.

Many 1990s-era 7FH2 generators were equipped with an automatic purge system that activated when hydrogen purity at the seals dropped below a specified set point. However, the controls were located in the collector compartment and could not be safely accessed if a hydrogen leak in that compartment was suspected. In the event seal oil was lost it would be unsafe to approach the collector compartment to activate the purge. If the controls were left in maintenance for any reason, there would be no way to activate the purge without endangering an employee.

Screenshot of the Hydrogen purge option in softwareSolution. Since the automation was already in place along with solenoid-activated hydrogen shutoff valves, hydrogen vent valve, and CO2 admission valve, all that was needed was to move the controls to the Mark V. Employees of Hermiston and TTS Energy Services, Orlando, Fla, modified control wiring and re-routed it to the Mark V. Because of the significant safety and liability concerns associated with hydrogen, a controls consultant was engaged to modify the Mark V logic and create a purge button to activate the purge from the Mark V HMI (photo right).

Results. Now control room operators can monitor hydrogen purity remotely and perform a preemptive purge in the event they lose seal oil, without putting employees or equipment at risk. The total cost of the project was less than $10,000.

About TTS
At TTS, we specialize in innovative and high value-engineered solutions that help our clients maintain, upgrade, and enhance their power generation and gas compression assets. Learn more at our website TTS Energy Services or contact us at (407) 677-0813.

TTS Plant Optimization and reliability

Headshot of Ricky Morgan

An interview with Ricky Morgan, VP Engineering, on how TTS’s support team and engineers can help plants optimize their operations for extended reliability.  

What are some major challenges that facilities are facing now-a-days? Before and after COVID-19?

COVID-19 has only highlighted further that customers are looking for operational flexibility in the industry.  As the energy industry continues to change, power plant owners and operators are looking for ways to optimize their resources and assets to create revenue flows.

The operational challenges include a changing operational envelope as a direct result of renewables, changing fuel costs, emission requirements, coal plant retirements and a reduction in demand at this time.

To address this, operators need their equipment to start faster, start reliably, operate on multiple fuels, and run cost-effectively.

Equipment reliability is a challenge for the gas turbine industry.  “Many operators have vintage equipment that they can start, but if it won’t start reliably and then keep running, then it’s value decreases dramatically” says Morgan.  It goes without saying that maintenance and troubleshooting are directly related to operational reliability – how easy (or more often, difficult) is it to work on the equipment, to get parts and then to install and configure them properly.

“Furthermore,” states Morgan, “power plants also need operational flexibility in fuels, starting times and turndown; all are critical in today’s power generation market. Other industries are also experiencing this flexibility issue during COVID-19 as they try to adapt, ramp down or ramp up production, change product types and manage labor and resources.”

Another challenge is access to information related to machine or system performance – old analog and relay systems provide little operational or historical data. To solve the reliability, maintenance, and flexibility problems and to leverage available resources, you need relevant and timely information and data. Data is key to good decision making.

What can be done to improve these facilities?

With increased limitations on emissions and the demands on these legacy machines changing drastically, some facilities have to face the fact that their asset is fully depreciated.  However, it would cost too much to rebuild and scrap the asset.  Many operators and OEMs turn to upgrades to preserve their asset and to remain relevant, responding to the grid’s needs.

These upgrades could be any combination of the following:

  • Automation – use modern control systems to automate and make data available both locally and remotely.

  • Optimization – use modern algorithms for improved control and protection

  • Simplification – make maintenance and troubleshooting user friendly through smart design, use of current technology to replace obsolete and complicated designs and improving data availability. More information and less failure points.

  • Upgrades – install new devices and equipment – a new transmitter for additional data points is the simplest example.

  • Conversion – Increase flexibility through conversion of existing assets.

  • Analysis – use the data available to operate and maintain at maximum efficiency and flexibility


Why should plants and facilities invest in optimizing their vintage equipment?

In the long-term, the ROI for plant upgrades and optimization usually far outweighs scrapping a legacy asset.  Overall, it drives downtime reductions for plant operators, which is crucial for reliable functionality and plant efficiency.  Downtime means loss of profit and productivity. The upgrades listed above can all contribute with each site having different needs and different paths to improve operational reliability. Control system upgrades are one of the most common upgrades considered:

Modern control systems can have the following benefits:

Image Suggestions for these bulleted points: include icons or small arrows symbols that show “increase” and “decrease” for each item.

  • Reliability – hardware and software optimization and the ability to provide large amounts of real-time and historical data increases reliability

  • Machine Performance – some older relay systems will see more accurate and often better overall performance and efficiency while operating as a result of accurate digital data.

  • Maintenance Planning – accurate data and feedback from the control systems improves maintenance planning.

  • Flexibility – modern control systems can allow you to identify and increase your operation envelope.

  • Spares – lower overall spares inventory costs, especially if the system used is already installed elsewhere in the facility

  • Operator Training Costs – using the same system across a plant can reduce overall training costs and increase personnel flexibility. Equipment suppliers typically provide more frequent, varied and cost-effective training courses than OEM turbine manufacturers


What are some of the main plant optimization upgrades that TTS provides to clients?

TTS has been offering innovative, technical solutions to the turbomachinery industry for over 35 years.  In 1988, we pioneered remote access and support for troubleshooting gas and turbine operational failures.  “When I joined TTS in 1999 as a Project Engineer,” says Morgan, “we were the first to provide cost-effective integration of control platforms from diverse OEMs to provide for remote worldwide access.”

With advancements like remote access and support, it has always been our goal to help energy providers and turbine owners to achieve unit reliability and fuel resilience in an ever-advancing market.

Plant Optimization through TTS gives operators a myriad of services to help improve operational flexibility and reliability.   Optimization services include:

  • Control Systems – on Rockwell Automation or Emerson RX3i platforms

  • Optimized Software Design – updated algorithms for protection and control

  • Human Machine Interface – increased access to data and operating information through clean concise graphics interfaces.

  • Historian – data gathering – key to troubleshooting and maintenance planning

  • Equipment Upgrades/Conversions – both mechanical and electrical system upgrades are offered


What are some examples of projects you have worked on to improve a facility via plant optimization?

Over the last three decades, TTS has established itself as a leader in the field of CT plant optimization and reliability improvements.  Our goal is to provide our customers with a complete array of services from state-of-the-art control systems on vintage units to performance testing on the latest “F” technology equipment.

Current/Past projects include the following

Legacy Asset Upgrade

In a recent project, TTS were asked to assist a customer who had legacy assets. These assets (three different gas turbine models and manufacturers) had at one time the capability to run on dual fuel.

Over time the ability to run on dual fuel had been compromised and starting reliability in either fuel had degraded to a point where the units were out of service for more time than available.

To address this challenge, TTS provide a comprehensive engineering, equipment supply, installation, and commissioning scope for the following:

  • Turbine Control System – based on Rockwell ControlLogix

  • Generator Excitation – based on Basler DECS-400

  • Generator Protection & Control System

  • Upgraded Instrumentation – switches, transmitters

  • Unit Rewire

  • Upgraded Electronic Fuel Valve Systems for both fuels

  • Application of the latest software control algorithms for the gas turbines.

  • Human Machine Interface


These upgrades applied to three different machine types but with a common platform, components and engineering approach met and exceeded the customers expectations for reliability and ease of maintenance.

Adjustable Peak firing is gaining traction in the market

Traditional peak firing increases unit firing temperature a fixed, incremental amount above the rated unit base load value. This increase can equate to at least a 2.5% bump in the output for the latest GE units during periods of high demand but because an increase in firing temperature boosts NOx production, the degree of incremental firing achievable above baseload may be constrained by NOx emissions

Adjustable peak firing is a valuable tool in cases where emission values exceed allowable limits before the unit reaches its standard peak firing limit. It allows the operator to increase the load to take advantage of periods of high electricity prices while staying within the maximum allowable NOx emissions dictated by their emissions permit. This mode is especially useful for merchant plants with simple cycle units or with combined cycle units with SCRs.

Implementation of adjustable peak firing can be tailored to specific site power output and emission limitation specifications and requires control system logic modifications, HMI modifications and combustion tuning necessary to install peak firing capability.  Adding this capability allows owners to take advantage of high revenue opportunities without risking compliance penalties.

If you have a legacy asset or project you are interested in making upgrades on, call or email TTS Energy Services.  We will come see you or meet virtually to discuss your challenges and offer a solution.

Contact Us Today!

Improve Turbine Flexibility & Reliability with Fuel-System Modifications

With the instability of oil prices, it is mission critical to control operating costs. Put your power generation needs in the hands of power generation experts, make sure you have 100% fuel availability.

Gas turbines are one of the leading sources of power generation in the United States, making their ability to produce consistent power crucial at all times. While natural gas is the most popular fuel due to its overall abundance, cost-effectiveness, and environmentally friendly status with modern advanced combustion systems, it shouldn’t be the only fuel source. Unpredictable global political and economic conditions, extreme weather conditions, as well as new discoveries in oil and gas exploration, can skew any forecast on fuel pricing and availability. By adding the capability to burn multiple fuel sources, gas turbine users can be prepared to handle these unexpected changes that arise. Not only can this increase their value in terms of improved versatility, but it will also ensure their availability to produce power under any economic circumstance.

A recent case where the importance of fuel flexibility has been needed are severe winters that have caught gas turbine users in gas curtailments. The winter of 2013-14 caused record snowfall, ice storms and arctic temperatures throughout the country and gas curtailment was commonplace for gas turbine operators.  One of the largest situations in recent years occurred in February 2011, where an arctic cold front descended on the Southwest region and brought temperatures below freezing and sustained wind gusts up to 30 mph. The area hit was extensive, complicating efforts to obtain power and natural gas from neighboring regions. Local distribution companies passed extensive curtailments of service during the event, where they interrupted gas service to more than 50,000 customers in New Mexico, Arizona and Texas. During this time the surrounding gas production basins had decreased production due to low market prices and according to the Federal Energy Regulatory Commission, an estimated 14.8 BCF of natural gas production was lost, further complicating the effects of the extreme winter.

In any situation when natural gas costs are high or supply is hard to obtain, users that have the capability to burn alternative fuels, such as distillate liquid fuel, are able to continue to generate uninterrupted power.  And as in any economic situation when the supply of power is low (as during gas curtailments) the price of power rises. The importance of adding another fuel source to gas turbines has been proven to be vital to increasing reliability of power. Now, several utilities are making fuel flexibility a contractual requirement for their non-utility generators desiring contracts within the utility operating area.

With over 30 years of experience, Turbine Technology Services Corporation (TTS) has performed numerous fuel conversions to many different types of gas turbines and can provide the fuel flexibility that most power systems need.

For a consultation to discuss how TTS can improve your single-fuel gas turbine by converting it to a dual-fuel system, call Frank Hoegler at (407) 826-1800 or email

About TTS
TTS provides engineering and construction expertise for the energy industry, worldwide. The company’s long history and experience providing technical solutions to global energy entities makes it a leader in its field. TTS has successfully managed numerous power and compressor station modernization projects and supplied innovative and unique engineering solutions to challenging problems for our energy customers. Since 1983, their leadership and engineering teams have provided innovative technologies and engineered high-value solutions to over 450 clients worldwide.

TTS Announces New Sales Presence In Houston

Frere Brings to TTS Midstream 25 Years of Solution Selling Experience in the Oil & Gas Industry

[Orlando, FL, July, 2020] TTS is pleased to welcome Amy Frere to the TTS team as Sales Manager of TTS Midstream.  Frere will be responsible for sales team leadership, driving revenue, develop customer partnerships, as well as general management responsibilities.

Frere has twenty-five years of experience in the Oil & Gas industry, specializing in solution selling.  She has worked for major OEMs such as Emerson, Rockwell, Siemens and GE.  Additionally, Amy received an engineering degree from Texas A&M University.

Head shot of Amy FrereAs part of the TTS team, Frere will develop client relationships for TTS in the midstream market, and will be based in Houston, TX.  TTS Midstream is focused on engineered mechanical, electrical and automation and controls solutions for the Natural Gas Compression and Storage sector as well as other oil, gas and petrochemical clients.  In addition, TTS Midstream offers a wide range of field services from programming to total plant commissioning.

Frank Hoegler, President of TTS stated, “Amy is a seasoned veteran of the midstream and power generation industry.  We are pleased to have a continued presence in the Houston area and are always happy to add an “Aggie” to the team.”

TTS Midstream is part of the TTS Energy Services group of companies which also includes TTS Power.

For more information, visit

About TTS

TTS provides engineering and construction expertise for the energy industry, worldwide. The company’s long history and experience providing technical solutions to global energy entities makes it a leader in its field. TTS has successfully managed numerous power and compressor station modernization projects and supplied innovative and unique engineering solutions to challenging problems for our energy customers. Since 1983, their leadership and engineering teams have provided innovative technologies and engineered high-value solutions to over 450 clients worldwide.

To learn more about TTS, please visit

If you would like more information about this topic, please call Frank Hoegler at 407.902.1344 or email

TTS COVID-19 Announcement

To Our Valued Customers, Vendors and Partners,

With the increased concern regarding the COVID-19 coronavirus, TTS has been closely monitoring the situation. We have taken every precaution to ensure the safety and health of our employees, subcontractors and our customers while in the midst of this global pandemic. This is a dynamic situation and as of today, TTS is open for business in accordance with the most up to date guidelines of state, federal and international guidelines. In addition, TTS has implemented its own Pandemic Response Plan and is in compliance with all government and customer-specific guidelines, pertaining to COVID 19, while on essential infrastructure and utility projects.

We will continue to monitor the situation and will update you as things develop. Information on the COVID-19 virus and measures the State, Federal and International bodies are taking can be found in the links below.

State of Florida Website:

CDC Website:

World Health Organization:


Thank you for your continued support.

Frank Hoegler



TTS Takes Energy Services From “Molecule to Megawatt”

TTS, formerly Turbine Technology Services, a full-service energy services engineering firm serving the power generation and gas compression industry, has launched a new website and brand identity showcasing the company’s knowledge, experience and breadth of services for clients in the energy industry.

A new, simplified company logo leads the way to a series of branding improvements to emphasize TTS two market-focused companies, TTS Power and TTS Midstream. The websites showcase customized engineering solutions, automation and control solutions, field services, as well as greenfield and brownfield power and gas compression projects worldwide. In a move to market the spectrum of services offered for the Power and the Midstream markets, the company will focus its business on services for fuel supply and power production.

Frank Hoegler, President of TTS says, “With our two operating units, TTS Power and TTS Midstream, nothing captures our commitment to the energy segment better than ‘Molecule to Megawatt’.”

The new logo and website recognizes the market demand for diverse and efficient options for energy operators looking for upgrades and modernization options. With their breadth of experience and specialty engineering solutions, TTS addresses the distinct challenges of today’s energy market.

Reinforced by Tony Thornton, company CEO, “TTS is a company driven by changes in the fuel market. Whether it be newly discovered gas in Africa, or new LNG destinations in the USA, TTS is committed to finding and providing customer-focused engineering solutions.”

Users should look for the latest industry news, trainings, seminars and company announcements. As TTS broadens the landscape of energy services, their goal remains the same: to provide operating simplicity, cost-efficiency, reliability, visibility and smart decision support to the global energy market.

Explore the in-depth capabilities of TTS by visiting

About TTS
TTS provides engineering and construction expertise for the energy industry worldwide. The company’s long history and experience providing technical solutions to global energy entities makes it a leader in its field. TTS has successfully managed numerous power and compressor station modernization projects and supplied innovative and unique engineering solutions to challenging problems for our energy customers. Since 1983, their leadership and engineering teams have provided innovative technologies and engineered high-value solutions to over 450 clients worldwide.

To learn more about TTS, please visit