Hydrogen-Ready Gas Turbines: 2026 OEM Comparison

By Green Gas Turbines Editorial · Published March 31, 2026 · 17 min read

Which Gas Turbines Can Run on 100% Hydrogen?

The short answer: selected small and medium gas turbines have either been offered or demonstrated for 100% hydrogen, but the public evidence is not equivalent across products. Kawasaki has launched sales of the 1.8 MW-class GPB17MMX with dry 100% hydrogen combustion. Baker Hughes states that its 17.5 MW NovaLT16 can start and operate on 100% hydrogen without a hardware change or pilot fuel. Siemens Energy ran a 13 MW SGT-400 on 100% green hydrogen in a 2023 industrial demonstration, while its standard product page lists lower released blend limits for current DLE and diffusion configurations.

For large utility frames, no manufacturer in this comparison publishes evidence of a generally released, grid-connected 100% hydrogen product at full engine scale. The strongest public milestones are model-specific: 50% capability or pathways on selected GE Vernova and Siemens products, and a 30% full-engine demonstration on Mitsubishi Power's JAC platform. Ansaldo Energia lists 70% hydrogen as released for the GT36, with development toward 100% underway.

That distinction is the central buying issue. A test result can validate combustion physics without proving plant availability, emissions across the load range, maintenance intervals, or a contractual performance guarantee.

What “Hydrogen-Ready” Actually Means

Hydrogen capability should be read as an evidence ladder, not a yes-or-no label:

Hydrogen-Ready Gas Turbine Comparison

The table uses each manufacturer's strongest clearly disclosed milestone for a named product. It deliberately avoids turning a combustor result into a fleet-wide turbine claim.

Percentages are volumetric and are not directly comparable with energy share. Product status and guarantees can change by frame, combustor, ambient conditions, emissions regime, and project date.

GE Vernova: Broad Fleet Experience, Model-Specific Limits

What has been proven

GE Vernova says more than 120 of its gas turbines have supported power generation using hydrogen or hydrogen-containing fuels. That experience spans refinery gases, steel gases, syngas, and purpose-supplied hydrogen blends, so it is valuable but not equivalent to 120 turbines operating on pure hydrogen.

The most important recent milestone is the advanced DLN combustor developed for B- and E-class units. GE Vernova reported validation on natural gas, blends, and 100% hydrogen, with NOx below 25 ppm, and targeted commercial availability as early as 2026. This was a full-scale combustor validation—not a 7HA or 9HA turbine running on 100% hydrogen.

Large-frame and aeroderivative position

For the 7HA and 9HA families, GE Vernova publishes up to 50% hydrogen capability with DLN 2.6e and a future technology pathway to 100%. The LM6000 fleet is also central to GE's hydrogen plans. A 2023 order for four LM6000VELOX units at Whyalla specified the ability to operate on 100% renewable hydrogen, but an order announcement should not be counted as an operating reference until commissioning is independently confirmed.

Best fit: owners of eligible GE units evaluating an OEM-supported upgrade, large CCGT buyers that need a defined 50%-to-100% development path, and projects that value GE's published experience with hydrogen-containing fuels.

Ask GE: Which exact frame, combustion system, fuel-temperature range, and emissions basis support the quoted percentage? Is the proposed capability released, project-engineered, or still tied to a future upgrade?

Siemens Energy: 100% Site Demonstration, Lower Standard Release Limits

What has been proven

The Hyflexpower consortium operated a 13 MW SGT-400 on 100% green hydrogen at an industrial CHP site in France in 2023 using dry low-emissions combustion. It is one of the clearest full-engine, real-site 100% hydrogen demonstrations in the sector.

However, demonstration status and standard product availability should not be merged. The current SGT-400 product page states that the standard DLE burner can use up to 30% hydrogen by volume, while a diffusion configuration can use up to 65% with unabated NOx. Siemens says further testing is expanding the operating envelope ahead of commercial sales release.

Large-frame position

Siemens lists the SGT5-9000HL and SGT6-9000HL at up to 50% hydrogen based on rig tests, with a pathway to 100% by 2030. Those machines address the utility-scale market, while the SGT-400 demonstration covers an industrial-scale product. Other SGT models have their own fuel limits and upgrade paths; there is no safe portfolio-wide percentage.

Best fit: industrial CHP projects that value the SGT-400 demonstration, existing Siemens fleets, and HL-class buyers willing to contract around a staged fuel-conversion plan.

Ask Siemens: Is the proposed percentage part of the current sales release for the exact burner, or is it supported by a demonstration or rig test? What additional hardware and outage scope are required at each future blend step?

Mitsubishi Power: Strong Grid-Connected JAC Evidence

What has been proven

In November 2023, Mitsubishi Power demonstrated 30% hydrogen co-firing by volume in the grid-connected M501JAC at T-Point 2 in Takasago, Japan. The program covered partial and full load and reported stable operation and low NOx. This is stronger evidence than a burner-rig result because it exercised the complete turbine and plant systems.

Mitsubishi has separately reported successful 50% hydrogen combustion testing in a full-scale combustor. That supports development, but it is not evidence that a JAC turbine has run at 50% hydrogen. The company's 2026 Hydrogen Power Generation Handbook describes ongoing development beyond the 30% full-engine milestone.

Product range and project interpretation

Mitsubishi's hydrogen program covers small and medium H-series products and large J-, G-, F-, and D-class turbines. The H-25 product page describes the 40 MW-class machine as hydrogen capable, but buyers should request the currently released blend, combustor configuration, and emissions guarantee rather than infer 100% capability from the broader roadmap.

Best fit: large CCGT buyers that value a grid-connected 30% JAC demonstration and projects aligned with Mitsubishi's integrated turbine, hydrogen-production, and storage validation at Takasago.

Ask Mitsubishi: Does the quoted percentage refer to a full turbine, a full-scale combustor, or a future project phase? What share of heat input—not only fuel volume—will hydrogen provide?

Kawasaki: 100% Hydrogen in the 1.8 MW Class

Correct model and status

Kawasaki's relevant 100% hydrogen product is the GPB17MMX, a 1.8 MW-class cogeneration system. Kawasaki launched sales in September 2023 after demonstrating dry low-NOx combustion on 100% hydrogen in Kobe. The previous version of this guide incorrectly identified the L30A as a 1.7 MW turbine; the L30A is a separate 30 MW-class platform.

Combustion approach

Kawasaki uses many small hydrogen injection and flame elements to shorten the mixing distance and control flashback and NOx. This micro-mix approach is well suited to hydrogen, but “architecturally superior” is too broad a claim: performance still depends on the required load range, emissions limit, fuel purity, integration, and service support.

Best fit: industrial CHP, hydrogen hubs, research campuses, and other distributed projects needing roughly 1.8 MW per packaged unit.

Ask Kawasaki: What reference installations match the intended duty cycle, and what are the contractual NOx, turndown, availability, maintenance, and heat-recovery guarantees?

Baker Hughes: A 100% Hydrogen Option at 17.5 MW

Baker Hughes deserves a place in this comparison because it fills the gap between Kawasaki's distributed unit and the large-frame roadmaps. The company states that the 17.5 MW NovaLT16 can start and burn up to 100% hydrogen without a hardware modification and without pilot fuel. In June 2026, RINA granted the NovaLT16 type approval for marine propulsion on natural gas and blends up to 100% hydrogen.

A type approval is meaningful evidence for the defined marine configuration; it is not a universal guarantee for every land-based CHP, power-generation, or mechanical-drive project. Site conditions, package design, emissions rules, and duty cycle still require a project-specific proposal.

Best fit: mid-scale industrial, mechanical-drive, and marine projects that need a compact turbine and a clearly stated route to pure hydrogen.

Ask Baker Hughes: Which operating modes and ambient range are covered by the 100% hydrogen guarantee, and which auxiliary, enclosure, detection, ventilation, and fuel-compression changes remain in the project scope?

Other OEMs Buyers Should Not Ignore

Ansaldo Energia: The current GT36 product material lists 70% hydrogen capability as released and says development toward 100% is underway. That is a material large-frame option and should be included where fleet strategy, service coverage, and project economics fit.

Solar Turbines: Solar reports long operating experience with process fuels containing more than 50% hydrogen. The exact acceptable fuel specification and hardware scope are model- and site-specific, so buyers should request a formal fuel evaluation rather than assume a portfolio-wide blend limit.

Doosan Enerbility: Doosan is developing hydrogen dual-fuel and 100% hydrogen turbines. Treat published future capability as a roadmap until a named commercial configuration, test basis, and guarantee are disclosed.

How to Shortlist an OEM

Use our gas turbine comparison tool to compare power output and efficiency, then request hydrogen guarantees for the exact shortlisted configuration.

Retrofit Reality: Why Generic Cost Estimates Mislead

There is no defensible universal price for moving a gas turbine from natural gas to a given hydrogen blend. The scope can range from controls tuning to a new combustion system and extensive plant modifications. Currency, outage timing, frame condition, local codes, and fuel-delivery pressure can outweigh the nominal burner-kit cost.

A credible retrofit study should cover:

• Combustion hardware and controls: fuel nozzles, liners, valves, metering, composition measurement, flashback detection, and protection logic.
• Fuel system: piping materials, seals, compression, filtration, purging, venting, and hazardous-area classification.
• Enclosure and safety: hydrogen detection, ventilation, fire protection, separation distances, and emergency shutdown philosophy.
• Emissions: the complete load-range NOx guarantee and whether SCR, diluent injection, or additional reagent is required.
• Performance and maintenance: output, heat rate, turndown, starts, ramp rate, combustion dynamics, inspection intervals, and parts life.
• Commercial terms: warranty, LTSA changes, outage slot, long-lead components, and performance-test acceptance criteria.

Ask for a budgetary proposal tied to a site survey and a named turbine serial number. Published percentage claims cannot substitute for that engineering.

The Hydrogen Blend Trap: Volume Is Not Energy

OEMs normally quote hydrogen as a percentage of fuel volume. Because hydrogen has much lower volumetric energy density than natural gas, that number overstates its share of heat input. Mitsubishi Power's handbook illustrates the issue: 30% hydrogen by volume equates to about 10.1% of calorific input in the stated case.

Every tender should therefore request both:

• the hydrogen fraction by volume at the turbine fuel flange; and
• the hydrogen share of lower-heating-value energy input.

Also specify fuel purity, water content, contaminants, pressure, temperature, composition-change rate, and the transition procedure between natural gas and hydrogen.

What to Ask in Your RFP

1. What exact turbine model, frame, and combustion system supports the quoted hydrogen fraction?
2. Is that capability commercially released, demonstrated in a full engine, tested only in a combustor, attached to a project order, or still on a roadmap?
3. What are the guaranteed output, heat rate, turndown, ramp rate, and start performance at each fuel composition?
4. What NOx and CO guarantees apply across the load range, and are SCR, water, steam, or another diluent required?
5. What fuel pressure, temperature, purity, and rate-of-change envelope must the plant supply?
6. Which turbine and balance-of-plant modifications are included—and which remain owner's scope?
7. What inspection intervals, parts-life assumptions, warranty terms, and LTSA changes apply on hydrogen?
8. Which reference has the closest fuel, climate, duty cycle, emissions limit, and operating hours to this project?
9. What is guaranteed at COD, and which future blend increases depend on unreleased hardware?
10. What is the quoted conversion price, outage duration, delivery slot, and acceptance-test procedure?

Conclusion

The hydrogen gas turbine market is no longer a simple race to the highest percentage. The useful question is: what has this exact model proven, at what evidence level, and what will the OEM guarantee for this project?

Small and medium turbines now provide the clearest public 100% hydrogen options and demonstrations. Large-frame development is advancing, but the published record still consists of blend capability, full-engine demonstrations below 100%, combustor validation, and future pathways. Buyers who preserve those distinctions will write better tenders, avoid misleading comparisons, and reduce conversion risk.

Manufacturer Sources

1. GE Vernova – Hydrogen-Fueled Gas Turbines
2. GE Vernova – H-Class Gas Turbines
3. GE Vernova – 100% Hydrogen B/E-Class DLN Combustor Validation
4. Siemens Energy – SGT-400 100% Hydrogen Demonstration
5. Siemens Energy – SGT-400 Product Page
6. Siemens Energy – SGT5-9000HL Product Page
7. Mitsubishi Power – 30% Hydrogen JAC Demonstration
8. Mitsubishi Power – Hydrogen Power Generation Handbook
9. Kawasaki – GPB17MMX Sales Launch
10. Baker Hughes – NovaLT16 Product Page
11. Baker Hughes – NovaLT16 RINA Type Approval
12. Ansaldo Energia – GT36 Product Page
13. Solar Turbines – High-Hydrogen Fuel Experience