Port Shore Power | GreenPalm Solutions

01 / System overview

From the port grid to the vessel

A berthed vessel can draw electricity from shore in place of running its onboard auxiliary generators. Shore equipment converts the supply to the vessel’s voltage and frequency; the ship and shore systems check connection and interlock conditions before power is transferred.

01

Shore supply

Switchgear, transformers and frequency converters adapt the grid supply to the berth.

02

Berth connection

Connection boxes, shore power piles and cable handling equipment link the quay to the ship.

03

Onboard receiving

Verify the electrical conditions and complete the controlled transfer to the ship’s distribution system.

02 / Shore power benefits

Why use shore power?

Using shore power while berthed reduces reliance on onboard auxiliary generators.

01

Economic benefits

Shore power can lower the cost of supplying electricity at berth. Fewer generator operating hours can also reduce onboard maintenance costs.

02

Social benefits

Switching off onboard generators reduces noise and local exhaust at berth. Carbon emissions can also fall, depending on the electricity supply mix.

03 / Power conversion

Size the supply for each berth

Select the conversion route from the incoming grid voltage, the ship’s voltage and frequency, and the berth’s capacity requirements. For sites that also need storage or temporary power, the portfolio includes containerized battery stations and mobile shore supplies.

Shore power cables beside a berthed ship

01

High → high → high

High-voltage grid input with high-voltage conversion and high-voltage ship supply.

02

High → low → high

Step down for low-voltage conversion, then step up for the ship connection.

03

High → low → low

Step down the grid input and supply a low-voltage ship connection.

04

Low → low → low

Use a low-voltage input, conversion stage and ship connection.

04 / Ship-to-shore connection

Choose how the cable reaches the vessel

Cable length, tidal range, ship inlet location and quay working space determine how the cable is deployed and recovered.

01

Ship-mounted

The vessel carries the cable handling equipment and connects to the shore outlet.

02

Shore-based

Quay equipment stores and pays out cable to the vessel.

03

Mobile shore-based

A mobile unit serves berths where the connection point needs to move.

05 / Monitoring and billing

Manage shore power across berths

Field equipment and meters connect to site and remote systems over links such as fiber, Ethernet, cellular or RS485. The operations team can monitor equipment, track energy use and manage billing from the same shore power system.