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Genloop · Sell · Alstom GT24 and GT26

Sell Your GT24 or GT26 Gas Turbine

Genloop buys ABB and Alstom GT24 and GT26 gas turbines and the combined cycle plants built around them as principal, and handles the removal.

01 · The machine

Two frames, one design: sequential combustion.

The GT24 and GT26 are the same F-class design scaled for two grids: the GT24 turns at 3,600 rpm for 60 Hz and the GT26 at 3,000 rpm for 50 Hz. ABB first fired a GT24 at Gilbert, New Jersey, in 1995 and a GT26 at Birr in 1996. Both burn fuel in two stages, an EV combustor and then an SEV combustor behind the first turbine stage. Alstom built them from 2000; GE took over the fleet in 2015 and kept the GT24, while Ansaldo Energia took the rights to sell new GT26s. Ratings rose from 165 and 265 MW to over 230 MW for the GT24 and 345 MW for the GT26.

Class
F-class
Sequential combustion, EV then SEV
Output
165 to 345 MW
GT24 to 230 MW, GT26 to 345 MW
Speed
3,600 or 3,000 rpm
Direct drive; GT24 at 3,600, GT26 at 3,000
Grid
60 Hz or 50 Hz
GT24 is 60 Hz, GT26 is 50 Hz; neither converts
02 · What sets the value

What a buyer prices.

The GT24 and GT26 have the most eventful history of any F-class fleet, and a buyer reads that history unit by unit.

Which rating

The A-rating units of the 1990s, the B rating that replaced them in 2000, and the 2002, 2006 and 2011 ratings are different machines. A buyer places a unit by its rating before anything else.

The early years

Alstom disclosed in 2000 that the first 80 units could not meet their performance and lifetime obligations, and settled with most owners by 2003. A buyer asks which fixes a unit received and whether it was uprated afterwards.

Cycle position

Equivalent operating hours since the last C inspection, not total hours. GE’s HE upgrade runs 32,000 weighted operating hours between majors; earlier hardware runs less.

Upgrades

GE’s GT26 HE adds up to 25 MW, and Ansaldo’s MXL3 has added over 30 MW on a French unit. A unit with one of these is priced ahead of one without.

Who can support it

GE Vernova services the GT24 and most of the GT26 fleet; Ansaldo Energia holds the GT26 design rights and its own service contracts; Emerson supplies controls for both. Which of them has serviced a unit is part of its record.

Controls and the plant

Units were delivered on ABB Egatrol and Turbotrol with Alspa, and some have moved to Ovation. The controls, the generator, the step-up transformer and, in combined cycle, the HRSG and steam turbine are priced with the unit.

03 · Where it goes

Where a GT24 or GT26 goes next.

Owners are paying for HE and MXL3 upgrades to keep these units running, which says what a buyer thinks of them.

Combined cycle rebuilds

A single-shaft GT26 block makes over 400 MW at around 59 percent, relocated where a new plant would take years.

Low-load operation

A GT26 block can be parked at about 20 percent load and ramped back in minutes, which suits grids with a lot of wind and solar.

Data center power

A GT24 block of 400 MW and more for 60 Hz sites whose load arrives before the grid connection does.

Two grids

The GT24 serves 60 Hz markets and the GT26 serves 50 Hz, and each stays on its own.

04 · What you get

Price certainty, and the equipment gone on the date the contract says.

No fee, no processGenloop buys as principal
One contractPurchase, removal, handback
Removal handledExecuted and insured by Genloop
A second lifeRestored, re-warrantied, redeployed
In execution nowLive mandates →
Combined-cycle asset7EA class CC · Latin America
Utility rebuild + capacity PPA6× Frame 7 · United States
Fleet divestment mandate600 MW recip · Southern hemisphere
05 · Questions

What Alstom GT24 and GT26 owners ask first.

The short answers. The detail is in the contract, and in the call that comes before it.

What is a used GT24 or GT26 worth?

It depends on the rating, the unit’s history through the early fleet modifications, where it sits in its inspection cycle, which upgrades it has, who has serviced it, and whether it sells with the plant around it. No public database records what used turbines actually sell for, so advertised prices are asking prices. Genloop makes a firm offer after its own engineers have inspected the unit.

Does Genloop buy both the GT24 and the GT26?

Yes. Genloop buys GT24 units for 60 Hz grids and GT26 units for 50 Hz grids, on their own, as complete generating sets, and as combined cycle blocks bought whole and relocated whole.

Does Genloop buy units that are not running?

Yes. Genloop buys units that are running, idle or mothballed. A unit that has been mothballed for several years is looked at case by case.

Can a GT24 or GT26 be moved to the other grid?

No. The GT24 turns at 3,600 rpm and makes 60 Hz, the GT26 at 3,000 rpm and makes 50 Hz, and neither can be economically converted. A GT24 goes to a 60 Hz market and a GT26 to a 50 Hz one.

Who supports these machines now?

GE Vernova services the GT24 fleet and the GT26 units it kept in 2015, and sells the GT26 HE upgrade. Ansaldo Energia owns the GT26 design, builds new ones and services its own fleet with the MXL3 upgrade. Genloop buys units from either side.

Who handles dismantling and removal?

Genloop does. Dismantling, export compliance and transport are Genloop’s scope, insured throughout, and written into the same contract as the purchase. The site is handed back on the schedule the contract sets.

Does Genloop charge a fee?

No. Genloop buys as principal and takes title, so there is no fee, no marketing period and no waiting for a buyer to appear.

06 · Direct

Tell us about the asset.

Every enquiry is read by the people who inspect, value and buy the equipment, and answered directly. Owners rarely have everything; send what exists and Genloop fills the gaps on site.

What to send, if you have it
Nameplate and configuration

GT24 or GT26, rating (A, B, 2002, 2006 or 2011), serial number, fuel, and what is included: generator, transformer, HRSG, steam turbine, balance of plant.

Hours and starts

Equivalent operating hours and starts, in total and since the last C inspection, and the duty the unit ran.

Inspection history

The last A, B and C inspections, with dates, who did them and open findings. Gaps are normal; say where they are.

Upgrades and modifications

Which of the early fleet modifications the unit received, any rating upgrade, HE or MXL3, and the control system.

Site and removal constraints

The window in which the equipment must be gone, crane and road access, and any export or permit requirements.

Title and encumbrances

Who owns the equipment, and what has to be released at closing.