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H-25 Series
H-25 Series Gas Turbines
Standalone Gas Turbine Output
40 MW class
Combined Cycle Output
60 MW / 120 MW class
Co-generation Efficiency
More than 80%
High Reliability
Cumulative total operating time exceeding 12.5 million hours As of Jan. 2025
High reliability gas turbines for industrial customers
The H-25 Series gas turbines were developed for utility customers and industrial customers in both 50 Hz and 60 Hz regions. Its first unit came into commercial operation in 1988.
Then Mitsubishi Power continued its efforts to improve the design of the H-25 Series gas turbines. While incorporating advanced elemental technologies and material technologies verified with the H Series gas turbines, we are continuously working to improve performance.
Replacement of the steam power plant with an H-25 Gas Turbine cogeneration plant
Mitsubishi Power's H-25 Gas Turbine is part of the decarbonization solution. Replacing the steam power plant with an H-25 Gas Turbine cogeneration plant has the potential to reduce CO2 emissions and energy consumption.
Features
Specifications
Layout
Co-generation
Delivery Records
Overview
The H-25 Series gas turbines are a heavy duty type that attains high efficiency on the basis of ample experience in manufacturing gas turbines.
They achieve high efficiency with heat recovery steam generators, as co-generation systems or combined cycle power plants.
The H-25 Series features simple cycle gas turbine output of 41 MW and a combined cycle output of around 60 MW for a 1 on 1 configuration and around 120 MW for a 2 on 1 configuration. When applying cogeneration, they supply a maximum of around 70 metric tons of steam per hour.
Features
Heavy duty structure: A highly reliable structure in consideration of ease of maintenance and long continuous operation
High efficiency: High performance in various power generation cycles (simple, combined and co-generation)
Fuel flexibility: Natural gas, off gas, light oil, kerosene, bio-ethanol, etc.
Package type: Easy to transport and install
Configuration
H-25
Compressor
Number of Stages
17
Combustor
Number of Cans
10
Cooling Method
Air Cooled
Turbine
Number of Stages
3
Rotor
Number of Rotors
1
Output Shaft
Cold End
Rated Speed
7,280 rpm
Gas Turbine
Approx. L × W × H
7.9 × 3.8 × 3.9m
Approx. Weight
55 ton
Simple Cycle Performance
H-25
Cycle
50/60 Hz
ISO Base Rating
41.0 MW
Efficiency
36.2 % LHV
LHV Heat Rate
9,949 kJ/kWh
9,432 Btu/kWh
Exhaust Flow
114 kg/s
253 lb/s
Exhaust Temp
569 °C
1,056 °F
Emission
NOx
15 ppm@15%O2
CO
9 ppm@15%O2
Turn Down Load
50 %
Ramp Rate
3.4 MW/min
Starting Time
22 minutes
Combined Cycle Performance
H-25
1 on 1
Plant Output
60.1 MW
Plant Efficiency
54.0% LHV
2 on 1
Plant Output
121.4 MW
Plant Efficiency
54.5% LHV
Starting Time
55 minutes
Performance Correction Curves
Effects of Compressor Inlet Temperature on Gas Turbine Performance (Typical)
Effects of Barometric Pressure on Gas Turbine Performance (Typical)
Package Design
The package design of the H-25 Series has the following advantages.
Minimize on-site installation work and time
Flexible layout
Short delivery period
Weight
Package
H-25
1
Gas Turbine
55 ton
2
Lube Oil Tank, Reduction Gear and Auxiliaries
63 ton
3
Generator
83 ton
4
Air Intake System
36 ton
5
Exhaust System (excluding silencer duct, stack)
8 ton
Typical Plant Layout: Simple Cycle
Typical Plant Layout: Co-generation
Typical Plant Layout: 1 on 1 Combined Cycle
Typical Plant Layout: 2 on 1 Combined Cycle
A co-generation plant with the H-25 Series gas turbine produces the highest steam supply volume in the turbine class and high thermal efficiency. We offer system engineering in response to a request for a combination of electric power and steam.
H-25
Power Output
39.6 MW
Heat Output (6 MPa / 300 deg C)
79 ton/h
Overall Efficiency (LHV)
More than 80 % LHV
The figures specified above represent gross performance figures for gas fuel under ISO conditions (atmospheric pressure of 1,013 hPa, atmospheric temperature of 15°C and relative humidity of 60%).
System Configuration
Steam Flow without HRSG Supplementary Firing
Steam Flow with HRSG Supplementary Firing
Delivery Records Example
H-25 Series Gas Turbine Project (Venezuela)
H-25 Series Gas Turbine Project (Indonesia)
H-25 Series Gas Turbine Project (Japan)
H-25 Series Gas Turbine Project (Bahama)
Order Results Example
Qty
Year of starting operation
Plant specifications
Niigata thermal Power Station, Tohoku Electric Power Co., Ltd. (Japan)
2
2011
Combined cycle
Niigata thermal Power Station, Tohoku Electric Power Co., Ltd. (Japan)
1
2012
Simple cycle
Anji, Amber Energy (China)
1
2012
Combined cycle
Tatarstan AMMONI Fertilizer, AMMONI (Russia)
1
2015
Co-generation
Keramasan Power Plant Extension, PLN (Indonesia)
2
2013
Combined cycle
Gas Turbine Units 1 and 2, Himeji No. 1 Power Station, Kansai Electric Power Co., Inc. (Japan)
2
2012
Simple cycle
Queen Elizabeth, SaskPower (Canada)
3
2015
Combined cycle
Blue Hills Power Station, Bahamas Electricity (Bahama)
1
2013
Simple cycle
Yosu, LG Chem (Korea)
1
2014
Co-generation
Yoshinoura Thermal Power Plant, The Okinawa Electric Power Co., Inc. (Japan)
1
2015
Simple cycle
Daesan, LG Chem (Korea)
1
2015
Co-generation
Ningbo, Kefeng Thermal Power (China)
1
2015
Combined cycle
Korea Petrochemical Ind. Co., Ltd. (Korea)
1
2017
Co-generation
Features
Specifications
Layout
Co-generation
Delivery Records
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GTCC
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H-25 Series
H-100 Series
M501G Series
M501J Series
M701D Series
M701F Series
M701J Series
Comparative Performance
Technical Information
Gas Turbines for Mechanical Drive Applications
Cutting-Edge Elemental Technology Producing 1600°C Class J Gas Turbines
Development of High-Efficiency Gas Turbine Applying 1600°C Class J Technology
