ONENSYS | Reliable zero-emission onsite power & charging

Power where
it matters.

We’ll explore how our onsite power solutions keep your operations going.

When energy becomes the bottleneck

Energy availability is no longer something you can take for granted. Grid capacity can be unavailable or delayed. Electrification increases power demand. Emission requirements limit conventional generators. And temporary projects need reliable power long before the grid is ready.

Infrastructure

Mobile work, no grid connection and strict emission restrictions?

Reliable zero-emission power that moves with your project.

Construction

No temporary grid connection and conventional generators no longer permitted?

Reliable onsite power to keep construction works going.

Manufacturing & Processing

Ready to expand, but limited grid capacity is restricting your growth?

Additional onsite power for production and electrification.

Charging hubs

Need more charging capacity than the grid can provide?

Additional onsite power to support charging expansion.

Reliable power onsite. Free electricity with SPUK SEB subsidy*.

The H2-Powergen delivers reliable zero-emission power wherever the grid cannot. Developed with leading technology and industrial partners, it is built to keep critical operations running.

Zero NOx, CO2 or particular matter emissions
Modular deployment of up to three units: delivering up to 225 kVA (300 kVA peak) and 5.000 kWh/day
Optional hybrid setup with battery support for short-term peaks
No environmental permit required for typical construction sites
Grid code compliant — off-grid and grid-connected operation
Available with contracted performance and service levels

*Depending on the construction project and use case, contact us for more information or read more about the SPUK SEB

Turning your energy challenge into reliable onsite power.

ONENSYS provides more than power units. We deliver the complete onsite power service – from solution configuration and hydrogen supply coordination to monitoring and operational support throughout the project. Depending on your operational requirements, we can agree contracted performance levels covering system availability, monitoring, service and response. We take responsibility for reliable onsite power, so you can focus on running your business.

Hydrogen supply coordination

Coordinates hydrogen delivery onsite through trusted partners.

Monitoring & operational support

Keeps the system reliable throughout the project.

Contracted performance

Agreed performance levels provide clarity on availability, service and operational support.

Our mission is to make onsite energy simple, reliable and zero-emission.

We help customers continue operating, expand their activities and electrify their equipment without being held back by limited grid capacity, emission and noise restrictions or complex energy logistics.

Our values:

Safety

Safety is built into every layer of our solutions and the way we deploy them. From controlled hydrogen supply, continuous monitoring and automatic shutdown systems to correct site setup, commissioning and operator training, we work to protect people, equipment and the surrounding environment.

Reliability

Energy must be available when it matters. We design robust onsite energy systems that perform in demanding environments and help customers keep their operations running.

Independence

We give customers greater control over their energy supply. Our solutions reduce dependency on grid availability, fossil fuels and vulnerable energy logistics, making power available where and when it is needed.

Sustainability with impact

We turn clean energy into practical results. By reducing local emissions where power is needed most, we help customers operate sustainably onsite, off-grid or in emission-restricted environments.

Collaboration

The best energy solution is built together. We work closely with customers, suppliers and specialist partners to create complete solutions that fit the technical, operational and commercial requirements of each project.

Let's power your next project.

Looking for reliable power for your project or organisation? Tell us your situation and our team will help you understand the options — power demand, grid situation, emission requirements and timing.

Stay informed

Follow project stories, practical insights and regulatory developments in onsite energy.

Practical and safe hydrogen power onsite

Deploying the H2-Powergen onsite is more practical than many expect. For typical construction site applications, deployment can generally be organised without an environmental permit when hydrogen storage remains below 5,000 kg, with only a notification required in advance. The system requires limited space, can be monitored remotely and is designed with controlled hydrogen supply, automatic shut-off and clear safety procedures.

Zero-emission construction is becoming the new standard

The transition to zero-emission construction is accelerating. SEB requirements and SPUK SEB subsidy are making clean onsite power increasingly relevant for public tenders, infrastructure projects and construction sites. The H2-Powergen provides a practical way to replace diesel power with reliable zero-emission electricity where grid capacity is unavailable or insufficient.

When the grid falls short: how to keep your project powered

If a new or upgraded grid connection is holding up your project, you are not alone. Across the Netherlands, connection requests are queued for months, and in many regions for more than a year. For a construction site, a port expansion or a logistics hub, that delay is not an administrative detail — it is the difference between starting on time and standing still. Here is what is actually happening on the grid, and what your options are while you wait.

Power where it matters.