Ansaldo Energia
Reliable Gas Turbines
E-, F- and H-class heavy-duty gas turbines from 78 to 560+ MW.
Ansaldo Energia designs and manufactures heavy-duty gas turbines built on sequential combustion technology, delivering high efficiency, low emissions, and validated hydrogen co-firing capability. The AE94.3A alone has accumulated over 5 million equivalent operating hours in commercial service worldwide.
GT36, flagship for the largest power plants
The GT36 is Ansaldo Energia's H-class flagship delivering ~560 MW simple-cycle and 800+ MW in combined-cycle configuration, positioning it among the world's most powerful gas turbines with class-leading efficiency and hydrogen readiness.
- ~560 MW simple-cycle / 800+ MW combined-cycle
- H-class firing temperature for world-class efficiency
- Hydrogen co-firing capability from day one
- Sequential combustion ensuring low NOₓ at full load
H-class, power generation in MW (SC)
GT36
~560 MW SC
AE94.3A, 5M+ equivalent operating hours
The F-class lineup includes the GT26 (~340 MW) and the flagship AE94.3A (~300 MW), the industry's most proven large F-class turbine with Autotune combustion control and validated 40% hydrogen co-firing.
- AE94.3A: 5M+ equivalent operating hours, unmatched F-class reliability record
- GT26: advanced sequential combustion for 340 MW combined-cycle plants
- Autotune real-time combustion optimisation on AE94.3A
- 40% hydrogen co-firing validated, no major hardware changes
F-class, power generation in MW (SC)
GT26
~340 MW SC
AE94.3A
~300 MW SC
Proven E-class for industrial and mid-scale power
The AE94.2 (~170 MW) and AE64.3A (~78 MW) serve mid-scale power generation and industrial CHP applications, offering proven reliability, simple operation, and competitive lifecycle costs.
- AE94.2: reliable 170 MW E-class for intermediate-load power generation
- AE64.3A: compact 78 MW unit for distributed generation and CHP
- Long track record in oil & gas and industrial applications
- Low lifecycle cost with extended maintenance intervals
E-class, power generation in MW (SC)
AE94.2
~170 MW SC
AE64.3A
~78 MW SC
Gas Turbines Tailored to Market Needs
Ansaldo Energia delivers solutions for utility power generation, oil & gas, and the energy transition across Europe, the Middle East, Asia-Pacific, and Latin America.
Gas Turbines for Utility Power Generation
Ansaldo Energia's H- and F-class turbines serve utility-scale power generation from 78 MW to 800+ MW combined-cycle, delivering reliable baseload and intermediate-load operation with class-leading efficiency across 50 Hz markets worldwide.
Contact us →Gas Turbines for Oil & Gas
The AE94.2 and AE64.3A E-class turbines are proven in oil & gas power generation and mechanical drive applications, delivering robust performance with low lifecycle cost in demanding upstream and midstream environments.
Contact us →Gas Turbines for the Energy Transition
Ansaldo Energia's sequential combustion technology enables validated hydrogen co-firing up to 40% by volume on the AE94.3A today, with a clear roadmap to 100% hydrogen, enabling operators to decarbonize incrementally without plant replacement.
Contact us →Sequential Combustion & Hydrogen Technology
Ansaldo Energia's proprietary sequential combustion technology is the foundation of its turbines' exceptional efficiency, low emissions, and hydrogen co-firing capability.
Sequential Combustion
Two-stage sequential combustion achieves high turbine inlet temperatures with low NOₓ across the entire load range, Ansaldo Energia's proprietary advantage enabling both high efficiency and fuel flexibility.
Autotune Combustion Control
The AE94.3A's proprietary Autotune system continuously optimises combustion in real time, reducing NOₓ emissions while maximising fuel flexibility, enabling operation across a wide range of gas compositions including hydrogen blends.
40% Hydrogen Co-firing
Validated hydrogen co-firing up to 40% by volume on the AE94.3A with existing low-NOₓ combustion hardware. No major modifications required, the pathway to carbon-neutral power starts immediately.
Technical Paper
Hydrogen Co-firing in Ansaldo Energia Gas Turbines
AE94.3A hydrogen co-firing validation, Autotune system performance, combustion stability results, and the roadmap to 100% hydrogen operation.
From Gas Turbine Package to Complete Turnkey Power Plant
Supply options range from the core turbine unit to a complete EPC-delivered combined-cycle power plant.
GT Package
- Core engine & auxiliaries
- Fuel gas system
- Inlet air filtration
- Exhaust & stack
Power Island
- Generator & excitation
- GT & ST auxiliaries
- Fire protection
- Electrical & I&C
CCPP Plant
- HRSG integration
- Steam turbine system
- Cooling systems
- Balance of plant
Turnkey EPC
- Full EPC delivery
- Design & procurement
- Construction
- Commissioning & handover
Gas Turbine Power Plants for Demanding Markets
Three proven plant configurations to match your power generation requirements, from ultra-efficient combined-cycle to rapid-response peakers.
Combined Cycle Power Plants
Ansaldo Energia CCPP configurations using GT36 and GT26 turbines achieve top-tier efficiency in the 120–800+ MW range, delivering the lowest CO₂ per MWh for large-scale baseload power generation.
Flexible Peaking Plants
Fast-start simple-cycle configurations using the AE94.3A and AE94.2 for grid balancing, frequency response, and renewable backup, with the load-following flexibility demanded by modern grids.
Combined Heat & Power
E-class CHP configurations using the AE64.3A and AE94.2 achieve plant efficiencies exceeding 80% by recovering exhaust heat for industrial processes, district heating, and steam supply.
Gas Turbine Service & Maintenance
Ansaldo Energia provides comprehensive lifecycle services for its own turbines and for legacy ABB and Alstom machines worldwide.
Long-term Service Agreements
Tailored LTSAs covering planned maintenance, hot-section inspections, parts supply, and performance guarantees, maximising availability and minimising lifecycle cost over the full plant life.
Overhaul & Component Repair
Comprehensive hot-gas-path component repair and overhaul at Ansaldo's dedicated service centres in Genoa and worldwide, minimising downtime and extending component life.
Upgrades & Retrofits
Efficiency and output upgrade packages for existing Ansaldo, ABB, and Alstom turbines, including GT26 combustion upgrades, AE94.3A Autotune retrofit, and output boosting kits.
Gas Turbine References
Ansaldo Energia gas turbines operate across Europe, the Middle East, Asia-Pacific, and the Americas.
Italy · 2008
Torrevaldaliga Nord CCPP
Australia · 2005
Enfield Power Station
Italy · 2014
Lavino CCPP
Frequently Asked Questions
Get answers about Ansaldo Energia gas turbines.
What is sequential combustion and why is it unique to Ansaldo Energia?
Sequential combustion is a two-stage combustion process where fuel is burned in two separate stages separated by a turbine expansion stage. This allows Ansaldo Energia turbines to achieve high firing temperatures with significantly lower NOₓ emissions compared to single-stage combustion. It also provides inherent fuel flexibility, enabling hydrogen co-firing without major hardware changes.
What gas turbines does Ansaldo Energia make?
Ansaldo Energia produces five heavy-duty gas turbine models: the GT36 (H-class, ~560 MW), GT26 (F-class, ~340 MW), AE94.3A (F-class, ~300 MW), AE94.2 (E-class, ~170 MW), and AE64.3A (E-class, ~78 MW). All are 50 Hz machines for utility and industrial power generation.
How much hydrogen can Ansaldo Energia turbines co-fire?
The AE94.3A has validated hydrogen co-firing up to 40% by volume using existing Autotune combustion hardware, with no major plant modifications required. Ansaldo Energia has a published roadmap to 100% hydrogen combustion for the AE94.3A and GT36 platforms.
What is the Autotune system on the AE94.3A?
Autotune is Ansaldo Energia's proprietary active combustion control system for the AE94.3A. It continuously adjusts combustion parameters in real time based on feedback from acoustic and optical sensors, maintaining optimal combustion stability and minimising NOₓ across varying loads, ambient conditions, and fuel compositions including hydrogen blends.
Does Ansaldo Energia service legacy ABB and Alstom turbines?
Yes. Ansaldo Energia is the original-lineage OEM for turbines previously branded under ABB Power Generation and Alstom Power, including the GT26, GT24, GT13E2, and earlier GT11 series. Ansaldo provides OEM-specification parts, overhaul, and upgrade services for these legacy units.
What are the main markets for Ansaldo Energia gas turbines?
Ansaldo Energia's primary markets are Europe, the Middle East, Asia-Pacific, and Latin America for utility-scale combined-cycle power generation. Their machines serve independent power producers, state utilities, and industrial co-generation facilities.
Source Ansaldo Energia Parts & Equipment
kodeksallc supplies genuine OEM parts, new units, and maintenance support for the full Ansaldo Energia gas turbine portfolio, GT36, GT26, AE94.3A, AE94.2, AE64.3A, and legacy ABB/Alstom units.