Year: 2026

 Enhance your excitation system to comply with Grid Code regulations at minimal cost

• Extend the life cycle of your current excitation system by adding functionality, fast and simple

• Advanced solutions and services to comply with local grid codes regulations

• Reliable product with highest availability

• Worldwide network of UNITROL® specialists at your service

The challenge

Grid codes are constantly changing due to the new and unprecedented network developments.

Therefore, installed plant equipment requires to be upgraded/replaced to comply with the network

regulations which leads to increased extended outages and costs.

PSS SA is a cost-effective solution to be compliant immediately.

Why Power System Stabilizer Standalone (PSS SA)

Power system stabilizers (PSS) are commonly used to damp various types of oscillation modes,

as from interarea oscillations in large transmission networks to local oscillation modes of synchronous

generating units. This is done by adding a stabilizing signal to the voltage regulator of the existing

excitation systems.

ABB helps making hydrogen production

robust, simple and cost efficient  by offering solutions that successfully

address the challenge of water electrolysis

Every plant is unique, and so are our customers

and their needs for electrification.

Whether you want to produce hydrogen for re

sale, for on- or off-site industrial utilization, as a

reserve for electricity generation or you are sup

porting customers in building such plants – get

ting ABB on board ensures an optimal electrical

subsystem. We take a holistic approach to system

design, so that all possible eventualities are fully

considered. The solution we propose for you is

tailor made to meet your requirements and based

on close collaboration with you as our client. We

always strive for a perfect understanding of your

needs, your process and the surrounding condi

tions to configure the optimum solution, which

you can trust 100%.

Customer satisfaction around the globe

For chemical industries alone ABB has provided DC supplies

in more than 60 countries. We can deliver the perfect fit for

any project regardless of extreme ambient conditions or

specific local regulations.

Regions: Americas, Europe, Africa, Middle-East & Asia, Oceanic

Number of hydrogen/hydrochlorate projects

Number of chlorine/chlorate projects3

Decades of experience in chemical production

ABB has supplied more than 750 rectifier projects for

chemical plants since 1958 – a successful track record

for our clients to benefit from as they scale up their

H₂ production.

• 110+ DC power supplies for hydrogen production up to

140 MW per plant

• 625+ DC power supplies for chlorine applications2 up to

350 MW per plant

Annual demand up to hundreds of millions of tons of H₂

Ammonia:  Direct use for fertilizer production

Synfuels:  Replacement in combustion engines

Industry:  Chemical, steel, cement and others

Buildings: Private and commercial heating

Transport:  Fuel for cars, rail aviation & ships

Power:  Energy storage for reconversion

Refining: High quality fuels and feedstock

Replacing fossil-based production

Hydrogen today is mainly produced by natural gas reforming

or coal gasification¹. Carbon capture may provide an interim

solution to prevent the release of CO₂ to the environment.

But only electrolytic production of H₂ allows to eventually

eliminate fossil fuels from the energy value chain – and

thereby full control of carbon emission and a steady

pathway to a sustainable future.

Electrolysis will move up to scale

The hydrogen council states that the annual demand for

hydrogen could increase tenfold by 2050. This will require

centralized gigawatt industrial production facilities that

leverage economies of scale. Hundreds of megawatts or

gigawatts of power per plant pose different challenges com

pared to existing installations. With our wealth of experi

ence in industrial electrolysis, ABB is the perfect partner to

expand the boundaries of H₂ production.

Electrolysis will move up to scale

The hydrogen council states that the annual demand for

hydrogen could increase tenfold by 2050. This will require

centralized gigawatt industrial production facilities that

leverage economies of scale. Hundreds of megawatts or

gigawatts of power per plant pose different challenges com

pared to existing installations. With our wealth of experi

ence in industrial electrolysis, ABB is the perfect partner to

expand the boundaries of H₂ production.

Decades of experience in chemical production

ABB has supplied more than 750 rectifier projects for

chemical plants since 1958 – a successful track record

for our clients to benefit from as they scale up their

H₂ production.

• 110+ DC power supplies for hydrogen production up to

140 MW per plant

• 625+ DC power supplies for chlorine applications2 up to

350 MW per plant

Customer satisfaction around the globe

For chemical industries alone ABB has provided DC supplies

in more than 60 countries. We can deliver the perfect fit for

any project regardless of extreme ambient conditions or

specific local regulations.

Regions: Americas, Europe, Africa, Middle-East & Asia, Oceanic

Number of hydrogen/hydrochlorate projects

Number of chlorine/chlorate projects3

High Power Rectifiers for Hydrogen Production

The best solution for efficient and reliable DC power supply

for large scale industrial water electrolysis

Scaling up H₂ capacity to power the future by

leveraging ABB’s comprehensive experience

Hydrogen is a key fuel for tomorrow’s economy

Hydrogen electrolysis can serve as a sustainable bridge in

the gap between electricity and chemical energy carriers,

thus allowing fossil free powering where direct electrifica

tion is not feasible. This means hydrogen can play a crucial

role in achieving government and corporate sustainability

targets, with ABB supporting these aims by providing

best-in-class electrification technology for the hydrogen

economy of tomorrow.

Annual demand up to hundreds of millions of tons of H₂

Ammonia:  Direct use for fertilizer production

Synfuels:  Replacement in combustion engines

Industry:  Chemical, steel, cement and others

Buildings: Private and commercial heating

Transport:  Fuel for cars, rail aviation & ships

Power:  Energy storage for reconversion

Refining: High quality fuels and feedstock

Services

Keep your plant running smoothly with ABB Care

The situation

As new hydrogen facilities are being planned, we can help from a consultation

perspective to ensure that the various disciplines are optimized, and we can

help with installation and commissioning as well as long-term service.

Our offering

ABB provides flexible annual service agreements (ABB Care) tailored to your

specific needs. These agreements may include a simple support rate or be built

up to cover your plant’s complete electrical services needs to keep it running

smoothly. As indicated by the service wheel on the right, ABB offers a whole

portfolio of automation, electrical and software services, to cover your plant’s

complete services.

Benefits

• Increased uptime and safety

• Reduce risk of failures

• Increased ROI through continuous improvement

Available services

• Cyber security software and services

• Asset management

• Annual and on-demand training

• 24/7/365 technical support

• Life cycle parts management

• System evolutions and upgrades

• HMI upgrades and replacements

• PLC integration/consolidation into DCS

• Asset Health Management

• Remote and on-site service

Benefits

• Increased uptime and safety

• Reduce risk of failures

• Increased ROI through continuous improvement

Benefits

• Enhanced efficiency:

s Utilizes real-time efficiency curves for each Electrolyzer module

s Ensures optimal plant performance across varying setpoints

s Improves efficiency across various Electrolyzer models

• Reduced electrical life cycle costs:

s Up to 20 % savings through optimized electrical source usage

s Considers downstream process obligations for comprehensive optimization

• Improved decision-making:

s Increased transparency with advanced monitoring and reporting

s Facilitates quick identification of improvement areas

s Enables data contextualization for efficient plant operation

s Streamlines regulatory reporting processes

Our offering

• Predictive optimization of electrolyzers based on hydrogen demand,

renewable energy production, and market schedules

• Real-time control of electrolyzer modules to maximize efficiency and

ensure safety

• Participation in various ancillary service markets, including frequency and

secondary reserves

• Comprehensive monitoring of electrical energy, heat, and mass flows

throughout the process

OPTIMAX® Energy Optimizer

Optimizing energy costs for

green hydrogen production

The green hydrogen industry faces challenges in harnessing renewable energy

efficiently and economically. As the energy sector shifts from a single to multiple

energy source model, optimizing production and consumption of energy is crucial.

OPTIMAX plays a vital role in this transformation.

ABB Ability™ Energy Management – OPTIMAX® maximizes energy value by

strategically managing energy flows and assets. This solution helps implement the

optimal operation of green hydrogen production plants to achieve state-of-the-art

efficiency and safety through modular design.

Our offering

• Predictive optimization of electrolyzers based on hydrogen demand,

renewable energy production, and market schedules

• Real-time control of electrolyzer modules to maximize efficiency and

ensure safety

• Participation in various ancillary service markets, including frequency and

secondary reserves

• Comprehensive monitoring of electrical energy, heat, and mass flows

throughout the process