Jan 19 • Dieseko Group

Future developments and strategic impact of Electric Power Units

EHPU News Series: Part 3
Electrification of foundation equipment is still in an early phase, and the Electric Power Units should be seen as an important but not final step. Several developments are likely to shape the coming years.

Looking Ahead

Dedicated electric tools

One possible direction is the development of fully electric vibratory hammers and other foundation tools, where electric motors are integrated directly into the attachment. For specific, fixed-purpose setups – for example cranes that always work with the same hammer type – such solutions could offer efficiency gains.

However, for most contractors the flexibility of hydraulic tools remains a key advantage. With an Electric Hydraulic Power Unit, one powerpack can drive many different attachments, which keeps fleets versatile and capital expenditure under control. It is therefore likely that electric-hydraulic systems will remain the dominant solution for some time.

Alternative energy carriers

Hydrogen and advanced biofuels are frequently discussed as alternative energy carriers for heavy equipment. In the context of EHPUs, hydrogen is particularly interesting as a fuel for stationary generators that charge battery containers or feed the grid connection. Availability, infrastructure and regulation are still developing, but in the longer term such combinations could further reduce the carbon footprint of foundation projects.

Digitalisation and remote support

The current Electric Hydraulic Power Unit range already includes online monitoring and remote service options. As data connectivity on jobsites improves, these capabilities will become more important. Remote performance monitoring, predictive maintenance and integration with project planning systems can all help contractors get more value from their EHPUs.

The Values brought by EHPU's

1. Zero-emission operation without replacing fleets

The central problem the EHPU range addresses is how to meet zero-emission requirements without replacing entire fleets of hydraulic tools. Many contractors own multiple vibratory hammers, impact hammers and rotary heads that are technically in excellent condition and have a long remaining service life.

By using an Electric Hydraulic Power Unit, these tools can be operated in exactly the same way as with a diesel power pack. The hoses, control systems and working methods remain largely unchanged. The difference is that the energy comes from an electric motor powered from the grid or a battery container instead of a combustion engine. For operators the transition is therefore relatively low-threshold: the equipment behaves as expected, but the jobsite meets zero-emission criteria.

2. Flexibility for different tools and projects

One Electric Hydraulic Power Unit can power a wide variety of hydraulic tools. Contractors can operate different sizes of Dieseko vibratory hammers, as well as other hydraulic equipment such as impact hammers, rotary heads and dredging pumps, using the same EHPU. This flexibility is important, because foundation projects differ significantly in pile type, soil conditions and required energy.

Instead of investing in several specialized electric tools, contractors can invest in one or more EHPUs and combine them with their existing hydraulic attachments. The power range from 250e up to 1100e covers applications from light urban pile driving to heavy-duty deep foundation works.

3. Working where diesel is not allowed

There are applications where diesel-powered machinery is simply not permitted, such as tunnels, underground stations and enclosed urban spaces. In these environments Electric Hydraulic Power Units provide a practical alternative. The EHPU can be connected via hoses to the hydraulic tool at the work front. When combined with external battery containers or a remote generator running on biogas or hydrogen, the solution can be adapted to local constraints without compromising on power.

4. A realistic hybrid path for cranes

Many foundation cranes still have considerable remaining lifetime and are equipped with diesel engines that do not yet meet the latest emission standards. For these cranes, retrofitting to full electric drive is often not economical. A realistic intermediate step is to upgrade the crane engine to a Stage V-compliant diesel and prepare the machine for connection to a large Electric Hydraulic Power Unit such as the 1100e.

In this hybrid configuration the crane can operate fully electric when connected to the EHPU. For transport or emergency situations the diesel engine remains available as a backup. This approach gives contractors the operational security they need on critical jobs, for example when a tool must be extracted from the ground before concrete sets.

5. Independence from battery technology cycles

By not integrating batteries into the EHPUs, Dieseko avoids a number of technical and organizational issues that would otherwise fall on contractors. Large lithium-based battery systems require specialized maintenance, careful thermal management and compliance with evolving fire-safety regulations. At the same time, the technology is progressing quickly: a battery container developed today may be outdated within a few years.

Separating hydraulic power generation from energy storage allows contractors to combine EHPUs with the most suitable battery solutions available at any given moment, without shortening the useful life of their foundation equipment.

Conclusion

Electrification of heavy foundation equipment is complex, but necessary if the sector is to meet tightening emission regulations and societal expectations. Dieseko’s Electric Hydraulic Power Unit range offers contractors a realistic way forward. By electrifying the hydraulic power source instead of the tools themselves, the EHPUs combine zero-emission operation with the continued use of existing hydraulic fleets.

With four models from 250e to 1100e, based on proven electric motor technologies and standardised 400 V AC connections, the range covers a broad spectrum of foundation applications. Coupled with external battery containers, biogas or hydrogen-powered generators and increasingly capable grid connections, Electric Hydraulic Power Units are poised to play a central role on the zero-emission jobsite of the future.
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