Steam Turbines

Mitsubishi Power steam turbines are a result of more than a century of R&D and manufacturing experience. Our highly reliable and efficient steam turbines have undergone strict in-house testing and quality management procedures to meet the diverse requirements of our global customer-base.

Trusted performance to meet your energy demand

Mitsubishi Power has a comprehensive lineup of steam turbines, with the flexibility to customize each turbine according to the needs of its customers.

Our many years of R&D coupled with our rich manufacturing experience ensure that we deliver high performance and highly reliable steam turbines to our customers.

  • Thermal Power Plants
  • Industrial Plants
  • Nuclear Power Plants
  • Geothermal Power Plants


Mitsubishi Power steam turbines have the flexibility to be designed for various plant requirements such as daily start and stop (DSS) operations in GTCC power plants, quick plant start-up, process steam extraction, and extraction steam for district heating.

In addition, we also have experience in installing a clutch between the steam turbine and generator in a C-G-S *3 power train to remove the need for cooling steam during plant start-up, thus allowing the reduction of auxiliary boiler capacity and improvement in ease of plant operation.

  1. Steam power plant: Power plant which uses the steam turbine as its only prime mover to generate electricity.
  2. GTCC power plant: Gas Turbine Combined Cycle power plant, in which a steam turbine is used in the bottoming cycle for power generation.
  3. CGS power train: Gas turbine (C) - Generator (G) - Steam turbine (S) in single shaft arrangement.


Up to 250 MWUp to 1,200 MW
No. of casingsSingle casing (HP/IP/LP Turbine)
Double casing (HP/IPTurbine - LP Turbine)
Double casing (HP Turbine -IP/LP Turbine)
Two Casings (HP/IP Turbine - LP Turbine)
Three Casings (HP/IP Turbine - LP Turbine×2)
Three Casings (HP Turbine - IP Turbine - LP Turbine)
Four Casings (HP Turbine - IP Turbine - LP Turbine×2)
Five Casings (HP Turbine - IP Turbine - LP Turbine×3)
Main steam conditionsUp to 16.5 MPa / Up to 600°CUp to 28.0 MPa / Up to 600°C
Reheat steam conditionsUp to 600°CUp to 630°C
Revolutions per minute3,000 min-1 (50 Hz) / 3,600 min-1 (60 Hz)3,000 min-1 (50 Hz) / 3,600 min-1 (60 Hz)


The following types of steam turbines are available for private/ thermal power generation plants:

  • Small/ Mid-sized Condensing Turbines
  • Extraction-condensing Turbines
  • Extraction Back-pressure Turbines
  • Mixed-pressure Turbines
  • Geared Turbines


  • Small/Mid-sized Condensing Turbines (Up to 200 MW Class)
  • Extraction-condensing Turbines (Up to 150 MW)
  • Extraction Back-pressure Turbines (Up to 80 MW)
No. of casingsSingle casing
Main steam conditionsUp to 13.7 MPa / Up to 566°C
Revolutions per minute3,000 min-1 (50 Hz) / 3,600 min-1 (60 Hz)

TypeMixed-pressure TurbinesGeared turbines
OutputUp to 200 MW ClassUp to 40 MW
No. of casingsSingle casingSingle casing
Main steam conditionsUp to 12.5 MPa / Up to 566°CUp to 12.5 MPa / Up to 541°C
Revolutions per minute3,000 min-1 (50 Hz) / 3,600 min-1 (60 Hz)Turbine: approximately 6,000min-1
Generator: 1,500 (50 Hz)/1,800 (60 Hz)min-1


Steam turbines for nuclear power plants employ an extremely long last stage blade (LSB), with the high pressure (HP) turbine, low pressure (LP) turbine and generator arranged along a single rotor, generating up to 1,800 MW. The turbines are designed to be extremely safe and reliable with efficiency among the highest in the industry.


No. of casingsFour casings (HP turbine - LP turbine ×3)
OutputUp to 1,800 MW
Main steam conditionsUp to 7.5 MPa / Up to 290°C
Reheat steam conditionsUp to 280°C
Revolutions per minute1,500 min-1 (50 Hz) / 1,800 min-1 (60 Hz)


Mitsubishi Power has supplied over 100 units (totaling more than 3,000 MW) of steam turbines for geothermal power plants, ranging from small output to large output units to meet various operational requirements.

Frames for Geothermal Power Plants

FrameSC1F Upward exhaustSC1F Axial exhaustSC2F Downward exhaust
Output30 MW45 MW110 MW

Steam Turbine Services

We offer a comprehensive lineup of small and mid-sized steam turbines for industrial applications, as well as large steam turbines for steam, nuclear, and geothermal power plants.

See how we’re generating proven success


Learn how Mitsubishi Power was selected as the contractor for the design, manufacturing, procurement, installation, construction, and test run of the steam turbines and other main and auxiliary equipment at the Domo de San Pedro Geothermal Power Station.