CASE STUDY:

TAKING DOWN FUELCOSTS £400,000 A YEAR
POWERS UP SALTEND’S
COMPETITIVENESS.

TOMONI®
Performance Improvement
Flexible Operation
IGV Optimization
Turbine Cooling Air Optimization
PLANT DETAILS• Saltend Power Station• IPP owned by Triton Power• Hull, England, UK
EQUIPMENT NOTES• 1200 MW Cogeneration Gas
Turbine Combined Cycle Plant• TOMONI Solution Installed:
2015

CHALLENGE
Renewable penetration and challenging market demands in the United Kingdom changed the landscape for Saltend Power
Station (Saltend), which saw a decrease in annual operating hours of approximately 34% from 2011 to 2015. This forced
them to look for solutions that improved competitiveness in this challenging market. Saltend collaborated with Mitsubishi
Power to determine a solution that minimized capital cost, improved average plant efficiency and could be implemented
during an existing planned outage.

SOLUTIONRESULT

The TOMONI solutions IGV Optimization
and Turbine Cooling Air Optimization
were determined to be a good fit. The
two solutions arm Saltend with the improved ability to pairwith renewables by improving efficiency when operating atpart loads and supporting the grid as renewables output
fluctuates. Both also included hardware upgrades that will
improve reliability and reduce maintenance costs. This willaid Saltend in meeting market needs while maintaining
business and environmental goals.

IGV Optimization and Turbine Cooling Air Optimization
improved the plant’s average efficiency to help increase
Saltend’s competitiveness in the highly challenging
trading environment in the United Kingdom power market.
These solutions combined to improve efficiency by about
0.5%. This led to a fuel savings of as much as £400,000
per year, which is helping Saltend meet challenging
financial targets, and positions it well for future increases
in partial-load operation.

IGV Optimization, a Flexible Operation and Performance
Improvement solution, combines hardware modifications
with new digital control strategies to more precisely
control inlet guide vane (IGV) closing to maximize exhaust
temperature at part loads while maintaining combustion
stability. This allows Saltend to run more efficiently during
partial-load operation.

“We feel the most important quality of a strategic supplier

Turbine Cooling Air Optimization, a Performance
Improvement solution, provides more precise controlof the turbine cooling air (TCA) fans to optimize rotor
cooling air (RCA) temperature through digital control
logic modifications and digital power electronic inverters.
This improves efficiency at part loads by maintaining
optimum RCA temperature.

DATA FOUNDATION& ENABLERS

FLEXIBLE
O&M
OPTIMIZATIONOPERATIONSSOLUTIONSPERFORMANCEIMPROVEMENTIMPROVEMENTSOLUTIONSFLEXIBLEOPERATIONSOPERATIONSSOLUTIONSDATAFOUNDATIONFOUNDATION& ENABLERS& ENABLERS

is the ability to listen to the customer and respondaccordingly to market conditions. As we’ve worked
together with Mitsubishi Power, I’ve found individuals who
are not only willing to listen but also willing to learn andimprove. In working together, they provided a solution
with clear economic benefits for us, allowing us to be
more competitive by improving reliability and reducing
nonproductive costs. These solutions helped Saltend
Power Station exceed its 2016 financial targets.”
Mick Farr
President and COO at Triton Power
O&M
OPTIMIZATIONPERFORMANCEPERFORMANCEIMPROVEMENTIMPROVEMENTSOLUTIONSFLEXIBLE
FLEXIBLE
OPERATIONSOPERATIONSSOLUTIONS 

These solutions were implemented during a planned
outage in 2015.

TOMONI® is a suite of intelligent solutions that accelerates decarbonization with power plant design, O&M and system knowledge, together withstrong customer and partner collaborations. TOMONI leverages advanced controls, artificial intelligence and machine learning with multi-layered
cybersecurity to make energy systems smarter, more profitable and ultimately more autonomous on the road to a sustainable future.

O&M
OPTIMIZATION© Mitsubishi Heavy Industries, Ltd. All rights reserved. TOMONI® is a registered trademark of Mitsubishi Heavy Industries, Ltd.
Mitsubishi Power is a power solutions brand of Mitsubishi Heavy Industries.

Data Foundation & Enablers
O&M Optimization
Performance Improvement
Flexible Operations
METP-11DS03E2-A