Cavotec Makes RTG Crane Electrification a Modular Battery Question
Container terminals are discovering that electrification does not stop at the quay wall. Cavotec’s modular battery energy storage approach for rubber-tyred gantry cranes, discussed by Damian Russell in a recent WorldCargo News interview and supported by the company’s PowerAccESS product line, points to a practical route for cutting diesel use in yard operations while keeping terminal flexibility intact.
For years, the visible port decarbonisation story has been shore power for ships. That remains central. But the next layer is now becoming harder to ignore: the diesel generators, mobile assets and peak loads that keep container terminals moving. RTG cranes are a particularly important case. They are essential to container-yard productivity, but conventional diesel-powered movement between blocks adds emissions, noise and fuel cost to daily operations.
Cavotec’s PowerAccESS proposition is designed for this gap. The company describes it as a modular and mobile battery energy storage system for RTG crane applications, including block changes, hybrid operation and full-battery use cases. The system uses lithium iron phosphate battery chemistry and is presented with scalable battery capacity from 62 kWh to 494 kWh. The purpose is straightforward: give RTGs reliable zero-emission power during movement and selected operating windows, without forcing every terminal to redesign its entire electrical infrastructure at once.
That modularity is the central commercial point. Terminals do not all have the same grid access, crane fleet age, operating pattern or capital cycle. A fixed electrification project may be ideal for some locations, but too slow or expensive for others. Mobile BESS gives operators another path: electrify specific duty cycles, support existing crane systems as a hybrid solution, and build confidence through phased deployment.
The technology also changes how terminals think about power. A crane does not consume energy in a perfectly smooth curve. Yard equipment has peaks, pauses and regeneration opportunities. Battery systems can help flatten the load profile, reduce generator runtime and manage short bursts of demand. In a constrained-grid environment, that can be the difference between a project that waits and a project that starts.
This is why the Cavotec discussion matters for DTF. Port electrification is increasingly a systems problem. Shore power, terminal charging, BESS, microgrids and automated equipment are converging inside the same electrical envelope. A berth may be ready for OPS, but the terminal behind it may still be carrying diesel dependence in its handling equipment. Conversely, a terminal that learns to manage battery storage and mobile electrical assets is also building competence that can support wider port-energy planning.
There is also a productivity argument. Terminal operators will not adopt cleaner equipment at scale if it makes daily operations more fragile. RTG block changes are a useful test because they are routine, practical and unforgiving. If a mobile battery system can reduce emissions while preserving operational rhythm, it becomes easier for terminal managers to view decarbonisation as an asset-planning decision rather than a compliance cost.
Cavotec’s wider shore power activity gives the product added context. The company is active on both ship-side and port-side electrification, from cable management to shore power connection systems and terminal equipment. PowerAccESS therefore sits in a broader portfolio aimed at making electrical infrastructure usable in real port conditions. That is important because the clean terminal of the future will not be built from isolated pieces. It will need interoperable systems that can work around vessel schedules, yard density, grid limits and equipment uptime.
For Mediterranean ports and DTF’s wider audience, the relevance is immediate. Many terminals face the same dilemma: they want to reduce emissions and noise, but they cannot always wait for large grid reinforcements or wholesale fleet replacement. Modular BESS does not remove the need for strong grid planning. It does, however, offer a practical bridge for ports and terminal operators that want cleaner yard operations while larger infrastructure programmes are still being developed.
Cavotec’s approach does not suggest that batteries solve every terminal problem. It shows that port decarbonisation is becoming more granular. The next gains may come from the ordinary moments of terminal work: a crane moving between blocks, a generator switched off, a peak load absorbed, a maintenance schedule simplified, a noisy yard made quieter. Those are the details that turn planning into operations.
