Combined Cycle Journal

HRSG Forum 2025: Owners confront aging assets, cycling duty, upgrade impacts

HRSG Forum 2025 was held in July at The Woodlands Waterway Marriott, The Woodlands, TX. This included a full-day workshop, two days of owner/operator and service provider discussions, a day of EPRI Technology Transfer, and a final-day tour of ValvTechnologies in Houston. The Forum was again co-chaired by Bob Anderson, Competitive Power Resources, and Barry […]

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Alstom Owners Group: Aging fleets, tight supply chains put user collaboration to work

The Alstom Owners Group (AOG) serves the global community of Alstom gas and steam turbine power generation equipment owners and operators. This group began in 2018 as a private user organization and has gained widespread support from third-party service providers, parts specialists and industry experts. Sponsors were ABB, Arnold Group, Camfil Power Systems, GE Vernova,

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7F Users Group: 2026 conference focuses on fleet reliability, outages, and controls

The 2026 7F Users Group Annual Conference is scheduled for May 18-22 at The Woodlands Waterway Marriott Hotel & Convention Center in The Woodlands, Tex. The agenda combines offsite shop tours, vendor solutions presentations, user-only technical sessions, and GE Vernova sessions addressing outage execution, controls modernization, casing condition, TILs, and RCAs. 2026 steering committee Chair:

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7FUG 2025: First-time users reap a wealth of experience from veterans

Among the portfolio of conferences under the umbrella of Power Users, the 2025 7F Users Conference certainly vies for the one with the most content shared directly from owner/operator (O/O) organization representatives. Which makes it especially valuable for the ~50% of attendees who were first timers. One key take-home tidbit: Most, if not all, of

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Legacy users compare notes on cycling duty, exhaust distress, and repair strategy

Users compare notes The 2025 Legacy Turbine Users Group, consisting of tracks for the GEV 7E, 6B, and 5 fleets, in Minneapolis again demonstrated why user-group meetings still matter for mature fleets. LTUG is not where owner/operators go to hear that legacy machines are old. Everyone in the room already knows that. They go to

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PACESETTER PLANT: Converted M501GAC reaches 50% H2 blend at Plant McDonough-Atkinson

By Jeff Porubcan, in conjunction with representatives from Mitsubishi Power, EPRI, and Georgia Power Editor’s note: Hydrogen has moved past white-paper status and onto utility hardware. At Plant McDonough-Atkinson, Southern Company and its partners pushed a converted M501GAC gas turbine to hydrogen blend levels and flow rates that matter to combined-cycle operators, not just lab

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PACESETTER PLANT: Quantum Energía uses Altamira V outage to reset plant reliability

Quantum Energía emerged as a major player in Mexico’s power sector after Mexico Infrastructure Partners along with Federal Government and Mexico’s pension funds acquired Iberdrola’s 13-plant portfolio in 2024. The company now manages about 8.5 GW of generation, nearly all modern combined-cycle capacity. At Altamira V, a 2025 major outage on Block 2 shows how

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Maximizing the lifespan of CO catalyst: What operators should check before ordering replacement

For many gas-turbine users, CO-catalyst trouble shows up first as a compliance headache: stack CO starts climbing at low load, differential pressure changes, and the plant is forced to decide whether it is looking at a cleaning issue, a system issue, or end-of-life catalyst. That decision now carries more economic weight than it did a

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HV ELECTRICAL: Closing the inspection gap on switchyard high-voltage assets

Tip: Implement a structured visual inspection program for switchyard high-voltage equipment between scheduled maintenance intervals, supported by periodic thermal and acoustic diagnostics, to catch early indicators before they become forced outages. Bryan Miller of RATTLIR LLC recently called CCJ editorial offices to flag something he keeps seeing at gas turbine sites: a significant gap between

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