Installing shore power on a yacht is not just a matter of choosing the rating. You need to think about how the equipment gets on board, where it goes, how it connects to the main switchboard and what happens if it fails. That is why SHP-X comes in three architectures.
1. Monolithic SHP-X: one unit, on board
When: new builds, or refits with enough space and access in the engine room or technical space.
- A single unit that converts the port’s voltage and frequency to the vessel switchboard’s, with galvanic isolation.
- Connected between the vessel’s shore inlet and the main switchboard, in parallel with the generators.
- Synchronises with the generator and transfers the load with no interruption. When shore and vessel grids match, it goes into bypass and the electronics step aside.
This is the architecture validated aboard Petrus, a 32.9 m Sanlorenzo SL108, with a 75 kVA unit (The Petrus case).
2. Modular SHP-X: stages that fit through the hatch
When: refits of existing vessels, where access is the problem.
- Power is split into modular, stackable stages sized to fit through a hatch or watertight door.
- They are assembled in the technical space without opening the hull or removing bulkheads.
- If one module fails, the rest keep running at reduced power.
- The same architecture scales with power: more modules, more kW, up to 250 kW.
We unveil the modular SHP-X prototype on 3 November on the Tomorrow.Blue Economy stand at Smart City Expo. It goes on sale in March 2027.
3. Shore-side SHP-X: the yard as backup
When: shipyards, boatyards and marinas that want to guarantee service.
- The same conversion, installed on the quay or in the yard.
- If the onboard unit fails or is being serviced, the vessel is powered from shore without going back to the generator.
- It also serves vessels with no onboard converter.
In all of them: the vessel as an energy hub
With batteries and solar on board, SHP-X manages all four sources in one architecture: shore power, solar, batteries and generator. In port, the vessel runs on the grid. At anchor, it can run silently on batteries, top them up with solar and start the generator only when needed.
Integration with onboard systems is open (Modbus TCP/IP): monitoring, consumption and savings are visible from the vessel’s own system.
How to choose
| Situation | Architecture |
|---|---|
| New build or accessible engine room | Monolithic |
| Refit with limited access | Modular |
| Yard or marina offering a service | Shore-side |
| A yard’s own fleet | Modular on board + shore-side backup |
Got a specific vessel or refit project? Book a meeting or visit the Tomorrow.Blue Economy stand, 3–5 November.