GE’s STF-D250 and STF-A200 steam turbines are all about flexibility. They feature design flexibility with multiple configurations, making them versatile and robust.

Proven expertise

Decades of experience have shaped GE’s STF-D250 and STF-A200 steam turbines into advanced platforms, both on 50 and 60 Hz, from 100 to 300 MW.

It’s all about flexibility

With their modular design and flexible arrangements, both platforms can be tailored to meet customers’ requirements, using flow steam path controls or steam extraction arrangements.

Ready to perform

Depending on machine size, standard sections and multi pre-packaged units are available to minimize installation and startup times.

The STF-D250 platform is designed for main steam inlet conditions up to 565°C (1049°F) and 140 bar (2031 psi). 

A single or reverse flow steam path controls axial thrust and axial thermal expansion to help ensure high reliability.

Double flow LP turbines meet project-specific back pressure requirements.

Flexible heat extractions can be arranged along the steam path to extract the steam at exactly the pressure that is needed.

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GE’s STF-A200 non-reheat platform

GE’s STF-A200 non-reheat platform provides cogeneration of power steam in an flexible and compact design for either 50 or 60 Hz applications, from 100 MW to 300 MW. Our fully modular concept combines HP, IP, and LP sections to deliver high efficiency and process steam supply. Available with a single casing, STF-A200 steam turbines have internally and externally controlled flow extractions to tap steam at any point along the steam path at the desired flow and pressure conditions. Arrangement options are available with axial exhausts.

The STF-A200 turbine is designed for main steam inlet conditions up to 565°C (1049°F) and 140 bar (2031 psi).

For added flexibility, the STF-A200 steam turbine is available as a single casing solution with a single flow LP section or as double casing solution with a two-flow LP section.

Turbine cylinders are shipped fully assembled to reduce site work and construction time.

An extensive LP blades portfolio allows a customized rear stage selection to fit all ambient conditions and achieve higher efficiency steam cycles.

A flexible arrangement of steam extraction nozzles along the blade path helps extract steam for project specific conditions.

Design solutions for internally controlled steam extractions are available. Adaptive stage technology is used to control low pressure steam extractions, while intersections with dedicated valves are appropriate for higher pressures

Product Specifications

  STF-D250 Platform Technical Data STF-A200 Turbine Technical Data
Main Steam 140 bar (2031 psi), 565°C (1049°F) 140 bar (2031 psi), 565°C (1049°F)
Frequency 50 Hz and 60 Hz 50 Hz and 60 Hz
Output ≤ 300 MW ≤ 300 MW
Steam Turbine Efficiency Up to 40.5% Up to 40.5%
Maximum Backpressure 0.35 bar (10.34 inHg) (0.7 bar (20.67 inHg) with special high back pressure rear stages) 0.35 bar (10.34 inHg) (0.7 bar (20.67 inHg) with special high back pressure rear stages)
Control Concept Sliding pressure mode
Fixed pressure mode (control stage)
Hybrid mode
Sliding pressure mode
Fixed pressure mode (control stage)
Hybrid mode