New & Used Steam Turbine Generators for Sale
New and used steam turbine generators convert thermal energy from pressurised steam into rotating mechanical power, used in power generation, industrial cogeneration, mechanical drive, and combined cycle applications. Siemens Energy’s industrial steam turbine portfolio covers the 2 MW to 250 MW range, with the
- SST-300 (up to 45 MW), SST-400 (up to 65 MW, single casing, geared drive to 1,500 or 1,800 rpm generators)
- SST-500 (up to 100 MW, double exhaust flow)
- SST-600 (up to 150 MW, single casing, condensing or back-pressure, mechanical drive applications down to small boiler feedwater pumps), and
- SST-700/900 (up to 250 MW, dual casing reheat for combined cycle and concentrated solar). Live steam parameters span up to 165 bar inlet pressure and up to 565 degrees C inlet temperature.
Typical applications include captive power plants in chemical, sugar, textile, pulp and paper, steel, and mining industries; combined cycle power plants; concentrated solar power; geothermal; biomass; waste-to-energy; and district heating. USP&E supplies steam turbines and HRSG packages alongside full EPC engineering. Click Fast Quote for a response within hours.
Combined Cycle: Adding a Steam Turbine to a Gas Turbine Plant
Adding a steam turbine and heat recovery steam generator (HRSG) to a simple-cycle gas turbine plant increases overall plant efficiency from 35 to 40 percent simple cycle to over 60 percent in combined cycle, depending on configuration. The latest Siemens combined cycle plants achieve more than 60 percent net efficiency. The Egyptian Electricity Holding Co. project deployed twelve SCC5-8000H combined cycle blocks with 4.8 GW per block, demonstrating utility-scale combined cycle output and efficiency.
Industrial and Mechanical Drive Applications
The SST-600 platform has been used in industrial power plants, oil refinery turbosets, biomass-fired district heating plants, concentrated solar power plants (including the 19 MW Gemasolar tower in Spain), and waste-to-energy installations across Europe, Asia, and Africa. The SST-600 is also used as a mechanical drive for boiler feedwater pumps and compressors, with hundreds of mechanical drive units in service since the 1970s, complying with API standards.
Frequently Asked Questions
Where can I buy a used steam turbine or HRSG package?
USP&E supplies used and new steam turbines and heat recovery steam generators (HRSGs) for combined cycle, cogeneration, and waste heat recovery applications. The Siemens industrial steam turbine portfolio covers 2 MW to 250 MW, including the SST-300 (up to 45 MW), SST-400 (up to 65 MW), SST-500 (up to 100 MW), SST-600 (up to 150 MW), and SST-700/900 (up to 250 MW). Live steam parameters span up to 165 bar inlet pressure and up to 565 degrees C inlet temperature.
How much efficiency does a steam turbine add to a gas turbine plant?
Adding a steam turbine and HRSG to a simple-cycle gas turbine plant lifts overall plant efficiency from 35 to 40 percent simple cycle to over 60 percent in modern combined cycle configurations. The latest Siemens combined cycle plants achieve more than 60 percent net efficiency. The steam turbine recovers exhaust heat from the gas turbine that would otherwise be vented, converting it into additional electrical output without burning additional fuel.