Hydrogen Power Plants

Fully integrated solutions for both existing and new units
Intro

Lowering CO₂ with hydrogen production and re-electrification

Siemens Energy is combining its unique portfolio of gas and steam turbines, electrolyzers, and heat pumps, and turning it into a unique optimized power plant solution with one operating system.

Benefits of integrating hydrogen into your gas turbine operations

 

 

Combining Power with Heat generation allows for an excellent overall efficiency:

The solution

Hydrogen power plant details

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 plant.

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.

New build hydrogen power plants

Power only package

The hydrogen power plant includes an H2-fired gas turbine (e.g. SGT5-9000HL, SGT-800, or SGT-400), electrolyzers with H2 compression and storage, and our Omnivise fleet management system to integrate all components including renewable energy sources feeding electricity into the electrolyzer.  

Baseline operations ~ 880 MWe @ 64% efficiency

[Combined Cycle] 

*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] 

*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 ~ 182 MWe @ 60.6 % efficiency

[Combined Cycle] 

*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 ~ 14 MWe @ 35.6% efficiency

[Simple Cycle] 

*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.

 

 

 

Increase efficiency by recovering heat

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.

 

The overall efficiency of the renewable energy used to produce hydrogen and heat can be 70%, thereby making this a great option for district heating plants.

*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.

Upgrade for existing 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.

Potential packages for upgrading to hydrogen co-firing can include, but is not limited to, the following typical steps:

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 Silyzers.

 

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

 

By transforming the conventional power plant into a hydrogen power 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.

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

Baseline operation ~ 445 MWe @ 59.4% efficiency

[Combined Cycle] 

*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.

Components

Learn more about the structure of the solution

Our Hydrogen Power Plants reduce CO2 emissions, which helps our customers to achieve their decarbonization goals. Siemens Energy integrates the different components into one plant solution. Renewable energy is used to produce hydrogen when it is abundantly available. And the power plant re-electrifies the energy when renewables can not meet the demand. The Omnivise control system optimizes supply and demand between the different elements of the solution. Learn more about its components below.

Hydrogen Storage

Hydrogen can be stored in tanks as a compressed gas or as a liquid. In Siemens Energy Hydrogen Power Plants the hydrogen is stored at pressure at gaseous state ready to be used in the gas turbine. Alternatively, depending on the availability of such, large scale hydrogen can also be stored in caverns.

Thermal Energy Storage

The energy storage system acts as buffer and manages the demand and supply peaks of the district heat and district cooling. The system on the image is a typical hot water storage tank. The thermal energy storage system can also be based on other technologies depending on the heat demand characteristics. 

Heat pump

Heat pumps can transfer heat from a low temperature to a high temperature level. Heat flows naturally from a higher to a lower temperature. Heat pumps, however, are able to force the heat flow in the other direction, using a relatively small amount of high-quality drive energy, such as electricity.

Silyzer 300

Silyzer 300 is the latest, most powerful product line in the double-digit megawatt range of Siemens Energy’ PEM electrolysis portfolio. Silyzer 300’s modular design makes unique use of scaling effects to minimize investment costs for large-scale industrial electrolysis plants. The optimized solution results in very low hydrogen production costs thanks to high plant efficiency and availability.

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Gas Turbine Power Plants

Choose from our product range of heavy-duty, industrial and aeroderivative gas turbines, ranging up to 593 MW. Depending on your requirements, whether simple or combined cycle, we provide you the right solution and scope for your market-specific needs.

Gas turbines help meeting to provide secure, affordable and environmentally sustainable energy. Siemens Energy has the capability and operational experience on hydrogen combustion, upgrade options and we offer customers a roadmap to 100% hydrogen capability.

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Wind and solar power

Excess power from renewable sources is used to produce clean hydrogen that can be stored for later.

Learn more about our wind power portfolio
Omnivise Fleet Management: Dispatch Optimizer

Based on the weather and load forecast and real-time measurements, the Dispatch Optimizer calculates the optimal  economical dispatch for all connected assets over the next 24h. 

This calculation is done every 15 min, and the setpoints are sent to the Omnivise Hybrid Controller.  

More information
Omnivise Hybrid Control

The Omnivise Hybrid Control controller manages the combination of assets in real-time by constantly monitoring the measurements and sending control signals to the generation assets on sub-second time frame.  It is able to operate autonomously with or without the Dispatch Optimizer, as well as implementing manual control commands given by the operator over the Application Server SCADA HMI.  

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News, articles, and press releases

References and Use Cases

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