Westinghouse 501B Gas Turbines (73MW) + HRSG (100MW) Steam Turbines – 2 Sets Available

Westinghouse 501B (W-501-B) – 73 MW, 60 Hz, Dual-Fuel Gas Turbines (2 units) + HRSG/Steam-Turbine 100MW Options Available

Quick Facts (per gas turbine):

• Make/Model: Westinghouse W-501-B (501B family)
• Rated Output (ISO, indicative): ~73–80 MW (site-dependent)
• Speed/Frequency: 3,600 RPM / 60 Hz
• Fuel System: Dual fuel – natural gas & distillate (No. 2) (typical for 501B)
• Shaft: Single-shaft generator drive
• Control System: Westinghouse controls
• Configuration: Heavy-duty frame GT (EconoPac-style enclosure)
• Hydrogen-Cooled gas Turbine Generators of Pace 520 Combined Cycle

Performance Data

• Heat Rate (Simple-Cycle): ~10,000–11,000 Btu/kWh (site-dependent)
• Heat Rate (Combined-Cycle): ~8,100–8,500 Btu/kWh (LHV)
• Efficiency (Simple-Cycle): ~32–34%
• Efficiency (Combined-Cycle): ~40–42%
• Exhaust Temperature: ~1,050–1,100°F (~565–590°C)
• Exhaust Flow: ~1.5–1.7 million lb/hr (680–770 kg/s)

Optional Combined-Cycle Equipment (available as separate lots):

• Heat Recovery Steam Turbine Generators (HRSG's): 2 available @ 100 MW each (each available as separate assets)
• Standard Westinghouse combined-cycle layout for this frame is 2×GT + 1×HRSG → 1×~100 MW STG (“2-on-1”) for ≈260 MW block rating.

Performance Guide (to estimate output):

• Simple-cycle (per GT): ~73–80 MW gross at ISO (lower in hot/altitude conditions).
• Combined-cycle (2×1 block with W501B): ≈260 MW gross with ~8,100–8,500 Btu/kWh (LHV) depending on duct firing and auxiliaries.

Condition & Status:

• Units were rebuilt with only 250 hours on each. Plant shut down order was made in 2021. Units were properly shut down and prepared for long term storage and preservation according to manufacturer specification.
• Siemens Power owns Westinghouse and they continue to provide full service and support, including spare parts.
• Final 3 years of operation service records, history and rebuild information all available.

Typical Applications:

• Data Centers
• Power Plants
• Utility peaking / mid-merit
• Combined-cycle or cogeneration with HRSG / STG

Power & Energy Conversions (for quick reference):

• 73 MW = 73,000 kW ≈ 97,895 hp (per unit)
• Two GTs simple-cycle: ~146 MW total
• One 2×1 CC block (2 GT + 1 ST): ≈260 MW nominal

Availability:

• 2 identical W501B gas turbines
• 2 × ~100 MW steam turbine generators (HRSG)
• All units can be sold individually or as a package.

Location: On request

Inspection: By appointment

Pricing: Call/email for quote

Disclosure: All ratings are typical for W501B and subject to buyer verification against the on-site nameplates, Instruction Book 1810-C453, and performance test data. Ambient/site conditions materially affect output and heat rate.

FAQs

Q: What is the rated output of a Westinghouse 501B gas turbine?

A: Each 501B unit produces approximately 73–80 MW in simple-cycle mode at ISO conditions (59°F, sea level, 60% RH). Actual output depends on ambient conditions and fuel type.

Q: What is the total plant output if combined with HRSG steam turbines?

A: In a 2×1 combined-cycle block (2 GT + 1 HRSG/STG), total gross output is about 260 MW.

Q: What efficiency can be expected from a W501B in combined-cycle operation?

A: Net plant efficiency is typically around 40–42% (≈8,100–8,500 Btu/kWh, LHV), depending on duct firing and site conditions.

Q: Are these turbines suitable for peaking duty or baseload operation?

A: Yes. The W501B is flexible: it can run as a peaker in simple-cycle mode or operate in combined-cycle for baseload/cogeneration.

Q: What is included in the package?

A: Each unit comes with the turbine enclosure, inlet/exhaust ducting, switchgear/MCCs, and auxiliary systems. Optional HRSGs 100MW steam turbine generators are also available.

Q: Can the control system be upgraded?

A: Yes. Many 501B units have been retrofitted from original Westinghouse controls to Siemens TXP or Emerson Ovation systems for modern reliability and compliance.

Q: What fuels can the W501B burn?

A: Dual-fuel configuration – typically natural gas as primary and distillate (diesel) as secondary.

Q: Are parts and service still available for the W501B platform?

A: Yes. Siemens Energy (successor to Westinghouse) and multiple aftermarket providers support 501B parts, upgrades, and field services worldwide.

Q: What industries use the Westinghouse 501B?

A: Utilities, independent power producers (IPPs), cogeneration/industrial plants, and grid stability projects worldwide.

Q: Are these turbines suitable for peaking duty or baseload operation?

A: Yes. The W501B is flexible: it can run as a peaker in simple-cycle mode or operate in combined-cycle for baseload/cogeneration.

Q: Can these turbines be relocated and re-installed?

A: Yes. With proper dismantling, transport, and reassembly, W501Bs are commonly relocated. Buyers should factor in logistics, rigging, and re-certification costs.

Q: Who's responsible for removal and transportation?

A: 100% Buyer responsibility. We can introduce you to expert resources who have the experience in properly disassembling and transporting these turbines and all types of plant equipment worldwide.