[PLANiT's Transition Story] Shipyard Electrification Begins Not at Sea but Inside the Dock
When we hear "electrification" in shipbuilding, we picture electric ships: batteries, hydrogen fuel cells, ammonia engines. But electrification must start not at sea, but inside the dock.
An Industry With No Power Boundaries
A large shipyard is a city. Cutting, welding, painting, and cranes all draw city-scale power, yet who uses how much, in which process, is almost never tracked precisely. Across a distribution network tangled over decades, hundreds of work groups share the same power lines, with almost no metering to separate usage by who is responsible.
Why No One Has Separated It
Not for lack of technology, but because of structure. First, work is not a conveyor belt: the location shifts with each task and yard and subcontractor crews share the same space, making per-process or per-firm metering all but impossible. Second, power cost is folded into operating cost as a fixed item, so separating it would mean redesigning the entire subcontractor cost-allocation system. Third, metering and EMS investment costs money now while the regulatory, ESG, and financing benefits are distant, so power has been treated as a "cost line," not a "strategic asset."
Regulation Is Creating the Driver
Now Scope 3 disclosure and LCA are narrowing the unit of carbon regulation from the whole yard to "a single ship." A yard that can prove "this vessel used X MWh in manufacturing, at this carbon factor" turns that into real order-winning power. The catch is timing. Korean shipbuilding is booming, with a three-year backlog and over 100% utilization, but the grace period for KSSB's mandatory Scope 3 disclosure is only three years. Once production hits its peak, there is no slack left to touch the distribution network, so the power infrastructure must be redesigned now, while capacity remains.
The Real Starting Point Is Tracking Power
The starting point is not swapping equipment but drawing power boundaries: per-process monitoring, separation of subcontractor power, and kWh-based carbon accounting. Without even knowing how power flows, the AI and digital-twin "smart yard" cannot hold together. Steel and petrochemicals already track per-process energy, as POSCO does, while shipbuilding alone stands at the start line. Electrification begins inside the dock, in front of the switchboard, the moment you look at the power data.
Impact On column "PLANiT's Transition Story" / Hyeryoun Chi, PLANiT