Solutions and products for power generation and distribution

Full speed ahead with intelligent power for maximum performance, reliability, and efficiency

Nearly all onboard processes require electrical power and a reliable power distribution system. With electrical power generation and distribution solutions for vessels, Siemens Energy ensures that power can be generated, distributed, and used exactly where it is needed. This guarantees the functionality, reliability, and cost-effectiveness of vessels of all sizes and types.

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Power solutions at a glance

Our customized, intelligent electrical power distribution solutions for vessels of all kinds are designed for maximum performance, reliability, and scalability – in conjunction with the vessel’s automation and propulsion system, if desired. We supply you with leading technological concepts, technical components, and services, from the power plant through power distribution to all consumer devices to the energy management system. All this comes from a single source, based on standardized components that are used in marine electrical systems on commercial ships worldwide and are quickly available anywhere.

Power LV

Power LV is an integrated, modular, and scalable system for providing a reliable and economical onboard power supply in low-voltage technology.

Power MV

Power MV is our solution for the onboard medium-voltage supply. It comprises all central components in medium-voltage technology. 


SISHIP Boost with WHRS is a waste-heat recovery system for vessels that helps reduce your energy costs by up to 12 percent.

SISHIP BlueDrive Family

With SISHIP BlueDrive Eco, the SISHIP BlueDrive family is now offering scalable solutions for all drive requirements, covering diverse performance graduations for small to medium-sized drives, from 5 KW in auxiliary mode up to 5.5 MW in main drives.

PEM Fuel Cells

The PEM fuel cell is ideally suited for use as an air-independent power supply for submarines. It enables dive times to be significantly extended, which minimizes the risk of detection.

DC Switchgear

The operational readiness of a modern submarine is critically dependent on the reliability and efficiency of its power supply, and that includes its DC switchgear system. 

Low-voltage power generation and distribution

There is hardly a process on board that will function without electrical power. Power LV ensures the efficient generation, distribution, and management of this power. With its integral protective mechanisms, the system achieves the highest level of supply security and functionality.

Medium-voltage power generation and distribution

Vessels such as frigates or cruise ships not only have extremely high energy requirements but also place heavy demands on the operating security and fail-safe performance of the onboard electricity supply. Our Power MV system fulfills these requirements with low capital costs.

The WHRS waste-heat recovery system

Fuel consumption is one of the largest cost items in ship operation. Remaining competitive over the long term will require highly efficient drive solutions and intelligent energy management. At the same time, environmentally friendly technologies are called for to comply with ever-stricter environmental protection regulations. The waste-heat recovery system WHRS is the best way to meet both requirements.

Innovative diesel-electric propulsion systems

Siemens Energy has over many years created a wide portfolio and extensive competence within the field of power electronics and propulsion systems. By changing the conventional propulsion system configuration and implementing a totally new control philosophy, the ultra-compact SISHIP BlueDrive PlusC™ system is created. With this system a whole new set of possibilities and advantages opens.

SISHIP BlueDrive PlusC – electrical power system

The synchronous generators are designed to operate in the same speed and power range as the connected diesel engine. Due to extended development of the power electronics, the main drive unit SISHIP BlueDrive PlusC is created as a stand-alone, integrated unit, including the generator and bus-tie panel as well as the frequency converter controls for all thrusters and auxiliary drives. In addition, the unit provides clean power supply to all auxiliary consumers, and all electronics are based on known and well-proven technology. In addition to the operational advantages, the new unit reduces footprint, volume, and weight by at least 30 percent.

SISHIP BlueDrive PlusC – power station control system

The SISHIP BlueDrive PlusC unit is equipped with an integrated control system that realizes all genset control, drive control, and power management functions within the unit itself. The speed and power of the diesel engines is controlled in correspondence with the total power consumption of the vessel. The electric system is only fed with active power from the generators; hence there is no circulating reactive power to handle. The speed and power characteristics of the diesel engine will be parameterized according to the selected diesel engine type. Integrated parts of the system are Power Management (PMS), Power Plant Protection (P3) and Generator Power Adaption Systems (GPA). All these systems are integrated in the integrated control system of the SISHIP BlueDrive PlusC.

The BlueDrive PlusC for small vessels: SISHIP BlueDrive Eco

SISHIP BlueDrive Eco combines the experience from both systems SISHIP BlueDrive PlusC and SISHIP EcoProp. SISHIP EcoProp is well known as a flexible, compact, high-power diesel-electric propulsion system for smaller vessels such as yachts, ferries, and public authority vessels. Like the complete SISHIP BlueDrive Family, SISHIP BlueDrive Eco uses the Siemens Energy industrial converter platform components, providing very high reliability and availability. It enables scalable systems from 5 kW inverter power use and closes the power range (to BlueDrive PlusC up to 5.5 MW inverter power), all in the same topology.

The Siemens Energy Storage System (ESS): BlueVault

The advanced lithium-ion battery-based solution BlueVault for offshore installations and marine vessels is suited for both all-electric and hybrid energy-storage applications. BlueVault energy storage solutions are designed to help ensure continuity of power and to minimize carbon dioxide emissions.

The battery is designed to maximize life, performance, and safety. It is equipped with an integrated battery management system and overload/short circuit protection. The storage modules with 6.6 kWh Li-Ion batteries can be slid into a rack. The battery storage cubicle consists of 9 modules and 60 kWh. The cubicles can be easily lined up to the total required battery capacity.

Performance, efficiency, and safety for extended underwater operations

A fundamental requirement of submarines is to run silently and remain submerged in certain situations. Conventional diesel-electric drive models need to periodically surface to recharge their batteries, making the boat vulnerable. Our PEM fuel cells deliver an atmospheric air-independent, noiseless propulsion solution for power generation on board that can extend the dive time by several weeks.

SG-DC supply and switching system for operational readiness

The operational readiness of a modern submarine is critically dependent on the reliability and efficiency of its power supply, and that includes its DC switchgear system. Our SG-DC supply and switching system delivers a reliable power supply to the propulsion system and the various onboard networks.