The push toward zero-emission terminals is accelerating across Europe. In ports and intermodal hubs, pressure comes from multiple directions: concession agreements, ESG commitments, local environmental zones, and increasingly strict tender requirements.
Because OEM availability of heavy electric port equipment (reachstackers, terminal tractors, empty container handlers and large forklifts) is still limited, many terminal operators are considering retrofitting existing diesel machines to electric.
From a sustainability perspective, this makes sense. From a regulatory and liability perspective, it requires careful attention.
This newsletter explains what electric retrofit really means for port equipment owners and terminal operators, based on European legislation and Dutch interpretation and enforcement practice.
Retrofit is not a modification it is a legal re-launch
A diesel-to-electric conversion of port equipment is classified as a substantial modification under EU machinery law.
In Dutch practice, this has a clear consequence:
After conversion, the machine is legally considered a “new machine” placed on the market.
This affects:
- CE conformity
- Product liability
- Insurance coverage
- Operational responsibility inside the terminal
For terminal operators, this distinction is crucial.
Who Is the Manufacturer After Conversion?
One of the biggest risks in retrofit projects is unclear manufacturer responsibility. If not explicitly agreed and technically justified:
- The retrofit party or
- The terminal operator commissioning the retrofit
may legally become the new manufacturer of the machine.
That role comes with serious obligations:
- Performing a full risk assessment
- Ensuring compliance with the Machinery Directive and related standards
- Issuing a new EU Declaration of Conformity
- Applying a new CE marking
- Holding full product liability for the converted machine
In the Netherlands, authorities do not look only at contracts they look at who actually controls and places the machine into service.
CE marking: full scope, not partial
A common assumption in port environments is that:
“Only the electric drivetrain needs to be assessed.”
This is incorrect.
Electric retrofit affects:
- Stability and load behavior
- Control systems and emergency functions
- EMC behavior in dense terminal environments
- Fire and battery risks (especially lithium-ion systems)
- Interfaces with spreaders, trailers, and charging infrastructure
As a result, the entire machine must be reassessed, not just the new components.
If the converted piece of port equipment does not have:
- A valid new CE marking
- A new EU Declaration of Conformity
- Updated machine documentation
…it is not legally compliant, regardless of how well it performs operationally.
What This Means for Terminal Operators
For terminal operators, retrofit decisions are no longer purely technical or financial.
They directly impact:
- Employer obligations under occupational safety law
- Insurance validity
- Incident liability (fire, injury, downtime)
- Audit outcomes by authorities or port authorities
- Contractual exposure toward clients and landlords
Electric retrofit can be a smart bridge solution but only if responsibilities are clearly defined and verified upfront.
Final thought (port & Dutch perspective)
In Dutch ports, enforcement bodies increasingly treat retrofitted port equipment as newly placed machinery. That means terminal operators must think like OEM buyers, not second-hand equipment owners.
The key question is not:
“Is this machine electric?”
…but:
“Who is legally responsible for it today?”
If you are thinking about electrifying your existing fleet of port equipment don’t hesitate to contact us. Based on this article we have put togehter a checklist for terminal operators to make sure all elements in this process are considered and taken care of. Contact us should you want to have the checklist! Heavy Cargo Lifters Tigran van der Linden