Hydrogen Power Plants

Integration of hydrogen into gas turbine power plant

Overview of Siemens hydrogen energy plants around the world

Preparation of gas turbines for the energy transition

Our hydrogen power plants include use cases for newly build as well as existing installations. Our goal is clear: we support our customers with their hydrogen ambitions, whether for existing or new units, and we can help with creating a roadmap to a full hydrogen power station.

The hydrogen power plant can be customized to your project-specific needs. The concepts can also be combined with other gas turbine models, depending on the required capacity.

Hydrogen integration for new built hydrogen power plants

Size L Hydrogen turbine (e.g. SGT5-9000HL or SGT6-9000HL)

Size M Hydrogen turbine (e.g. SGT-800 gas turbine)

Size S Hydrogen turbine (e.g. SGT-400 gas turbine)

Baseline operations ~ 880 MWe @ 64% efficiency

[Combined Cycle]

	Baseline operation (pure methane)	Hydrogen Operational Case (Methane + 30% vol H₂)	Hydrogen Operational Case (Methane + 50% vol H₂)	Hydrogen Operational Case (100% H₂, planned development)*
CO₂ Saving, g/kWh	-	-36 g/kWh	-72 g/kWh	-311 g/kWh
CO₂ Output, g/kWh	311 g/kWh	275 g/kWh	239 g/kWh	0 g/kWh
CO₂ Saving %, [kWh base]	-	-11%	-23%	-100%
H₂ flow, tons/hr	-	ca 4.7 t/hr	ca. 9.5 t/hr	ca 41.3 t/hr
Methane flow, tons/hr	ca 99 t/hr	ca 87.7 t/hr	ca. 76.1 t/hr	0 t/hr

*The results presented are only estimates for general information purposes and do not intend to provide legal, tax or accounting advice. The information and tools provided in this website are not designed to replace a professional project specific assessment. For an exact calculation the boundary conditions for the specific site should be considered. Expected capabilities or benefits may not apply or be realized in all cases. Information used to calculate results is subject to change without notice. Nothing on this site, including the results, shall be deemed or construed to be a warranty or guarantee of the information, product(s) or component(s) described herein.

Baseline operations ~ 655 MWe @ 64% efficiency

[Combined Cycle]

	Baseline operation (pure methane)	Hydrogen Operational Case (Methane + 30% vol H₂)	Hydrogen Operational Case (Methane + 50% vol H₂)	Hydrogen Operational Case (100% vol H₂, planned development)*
CO₂ Saving, g/kWh	-	-36 g/kWh	-72 g/kWh	-311 g/kWh
CO₂ Output, g/kWh	311 g/kWh	275 g/kWh	239 g/kWh	0 g/kWh
CO₂ Saving %, [kWh base]	-	-11%	-23%	-100%
H₂ flow, tons/hr	-	ca 3.5 t/hr	ca. 7.1 t/hr	ca 30.7 t/hr
Methane flow, tons/hr	ca 73.7 t/hr	ca 65.3 t/hr	ca. 56.7 t/hr	0 t/hr

Baseline operations ~ 182 MWe @ 60.6 % efficiency

[Combined Cycle]

	Baseline operation (pure methane)	Hydrogen Operational Case (Methane + 30% vol H₂)	Hydrogen Operational Case (Methane + 75% vol H₂)	Hydrogen Operational Case (100% vol H₂, planned development)*
CO₂ Saving, g/kWh	-	-37 g/kWh	-155 g/kWh	-328 g/kWh
CO₂ Output, g/kWh	328 g/kWh	291 g/kWh	173 g/kWh	0 g/kWh
CO₂ Saving %, [kWh base]	-	-11%	-47%	-100%
H₂ flow, tons/hr	-	ca 1 t/hr	ca. 4.3 t/hr	ca 9 t/hr
Methane flow, tons/hr	ca 21.6 t/hr	ca 19.2 t/hr	ca. 11.4 t/hr	0 t/hr

Hydrogen upgrade for existing gas power plants

As an OEM for key components, Siemens Energy has the experience, technical domain expertise and standardized approach for co-firing and recommends a collaborative approach to exploring the current capabilities of a facility and establishing a path forward to accomplish optimal hydrogen co-firing milestones.

Siemens Energy recommends a plant-specific feasibility study to guide sites towards understanding current capabilities, realistic target setting, hydrogen design package development and establishing a milestone execution plan. The resulting plan will leverage existing technologies and infrastructure to the extent possible to develop and design a package specific to the facility and aligned with the organization’s decarbonization goals.

When existing gas turbine plants are made ready for hydrogen co-firing, the facility can be extended to produce and store its own hydrogen using Siemens Energy Elyzers.

The below example shows an operational SCC-4000F power plant incrementally moving from 100% methane operation to 100% hydrogen using Elyzer P-300 electrolyzers with storage as shown in the images above.

By transforming the conventional power plant into a hydrogen energy plant, the facility is able to leverage cheap renewable energy from the grid and turning that into hydrogen for use when the gas turbine facility is being called upon. This feature brings immediate CO₂ emissions reduction, it saves money on CO₂ taxation and provides an energy storage capability with potential gains from storage credits.

Baseline operation ~ 445 MWe @ 59.4% efficiency

[Combined Cycle]

	Baseline operation (pure methane)	Hydrogen Operational Case (Methane + 15%vol H₂)	Hydrogen Operational Case (Methane + 30%vol H₂; development ongoing)	Hydrogen Operational Case (100% H₂; planned development)
CO₂ Saving, g/kWh	-	-17 g/kWh	-37 g/kWh	-335 g/kWh
CO₂ Output, g/kWh	335 g/kWh	318 g/kWh	298 g/kWh	0 g/kWh
CO₂ Saving %, [kWh base]	-	-5%	-11%	-100%
H₂ flow, tons/hr	-	ca. 1.1 t/hr	ca. 2.6 t/hr	ca. 22.5 t/hr
Methane flow, tons/hr	Ca. 53.9 t/hr	ca. 51.3 t/hr	ca. 47.9 t/hr	0 t/hr

Combining the re-electrification of hydrogen with heat generation can significantly increase the overall efficiency of the hydrogen power plant solution.

This option includes a heat pump for heat recovery and a thermal storage system as buffer.

The heat pump captures waste heat from the electrolysis process and increases its temperature to feed either directly into a district heating network, or temporarily store it in a thermal energy storage system as a buffer before feeding it into the heat network.

Hydrogen Power Plants - Service and Solutions

Hydrogen Power Plants

Lowering CO₂ by using hydrogen for power generation

Benefits of integrating hydrogen into your gas turbine operations

Decarbonization pathways for gas turbines

Learn in our new white paper:

Getting your plant ready for hydrogen co-firing

Preparing gas turbines for the energy transition - with hydrogen

There is increasing need, and potential, for hydrogen to decarbonize power generation. In this comprehensive white paper, learn about how Siemens Energy is approaching this unprecendented opportunity, readying gas turbines for the energy transition.

Our solution for hydrogen power plants

Power only package

Size L

Size M

Size S

Technical data / size L, SCC6-9000HL 1S (60 Hz)

Technical data / size M, SCC-800 2x1 (50/60 Hz)

From 0 to 100% hydrogen operation

Technical data / size L, example SCC5-4000F 1S

Combining power with heat generation allows for an excellent overall efficiency - watch the video to learn how:

Download additional hydrogen power plant resources

H2-ready power plant concept

Hydrogen Power Plants - Service and Solutions

Media and more

Bringing the hydrogen future forward to meet the challenges of today

HYFLEXPOWER demonstrates 100% hydrogen operation

Overcoming technical challenges of hydrogen power plants for the energy transition

Would you like to learn more about hydrogen power plants?

Hydrogen Power Plants

Lowering CO₂ by using hydrogen for power generation

Benefits of integrating hydrogen into your gas turbine operations

Learn in our new white paper:

Getting your plant ready for hydrogen co-firing

Our solution for hydrogen power plants

Technical data / size L, SCC5-9000HL 1x1 (50 Hz)

Technical data / size L, SCC6-9000HL 1S (60 Hz)

Technical data / size M, SCC-800 2x1 (50/60 Hz)

Technical data / size S, SGT-400 (50/60 Hz)

Combining power with heat generation allows for an excellent overall efficiency - watch the video to learn how:

Download additional hydrogen power plant resources

Bringing the hydrogen future forward to meet the challenges of today

HYFLEXPOWER demonstrates 100% hydrogen operation

Overcoming technical challenges of hydrogen power plants for the energy transition

Read more