GREEN Cell Shipping concept

Overview

The GREEN Cell shipping concept represents a proposed framework for powering merchant vessels through the use of containerized power units managed by a global logistics chain. The acronym GREEN Cell stands for Global Renewable Electrical Energy Network cell. This system is designed to integrate renewable energy sources into maritime transport by utilizing standardized containers as modular power sources. The concept remains in a proposed operational status, indicating that it is part of an ongoing development process rather than a fully deployed commercial solution.

The origin of the GREEN Cell concept is attributed to a thought experiment conducted by engineers working for the ABB Group. This initial conceptualization took place on March 13, 2009, in Oslo, Norway. The ABB Group is identified as the primary operator associated with the development of this concept. Following the initial thought experiment, the concept was introduced in an ABB magazine. It continues to be developed as part of an open innovation process. The concept utilizes mixed fuel sources, reflecting its reliance on renewable electrical energy networks. The primary fuel source is classified as mixed, indicating a combination of energy inputs to power the containerized units. The concept does not have a specific country of origin beyond the initial thought experiment location in Norway, as it is designed for global application. The commissioning date is listed as 2009, marking the year the concept was first introduced. The operational status remains proposed, suggesting that the concept is still in the development phase. The concept aims to revolutionize maritime transport by integrating renewable energy sources into the global shipping industry. The use of containerized power units allows for flexibility and scalability in powering merchant vessels. The global logistics chain is designed to manage the movement and deployment of these containers across different shipping routes. The concept is part of a broader effort to reduce the carbon footprint of the shipping industry. The ABB Group's involvement highlights the role of engineering firms in driving innovation in the energy sector. The open innovation process suggests that the concept is open to contributions and feedback from various stakeholders. The concept is still under development, indicating that there is potential for further refinement and improvement. The use of renewable energy sources aligns with global efforts to transition to cleaner energy alternatives. The concept represents a significant step towards integrating renewable energy into the maritime transport sector. The containerized power units offer a modular approach to powering ships, allowing for easier maintenance and upgrades. The global logistics chain ensures that the power units are efficiently managed and deployed across different regions. The concept is designed to be scalable, allowing for adoption by vessels of various sizes and types. The ABB Group's role as the primary operator underscores the importance of industry leadership in driving innovation. The concept is part of a broader trend towards the electrification of transport sectors. The use of renewable energy sources helps to reduce dependence on fossil fuels in the shipping industry. The open innovation process allows for collaboration between different stakeholders, including engineers, logistics experts, and energy providers. The concept aims to create a more sustainable and efficient shipping industry. The use of containerized power units offers a flexible solution for powering merchant vessels. The concept is designed to be adaptable to different shipping routes and vessel types. The concept is part of a broader effort to integrate renewable energy into the global transport network. The use of mixed fuel sources reflects the diversity of renewable energy inputs used in the concept. The open innovation process allows for continuous feedback and improvement. The concept aims to reduce the environmental impact of the shipping industry. The global logistics chain ensures efficient management of the power units.

Background and development history

The GREEN cell shipping concept was developed in response to growing environmental pressures on the maritime transport sector. Merchant ship propulsion accounts for approximately 4% of global carbon-dioxide emissions, a figure that has driven significant policy and engineering attention toward decarbonization. In 2007, industry estimates placed this contribution at 3.3%, reflecting early assessments of the fleet’s carbon footprint. By 2003, there was already a recognized call for emission reduction measures within the shipping industry, setting the stage for innovative propulsion solutions.

Origins and Core Development Team

The concept originated from a thought experiment conducted by engineers at the ABB Group on March 13, 2009, in Oslo, Norway. This session led to the formulation of the GREEN cell — standing for Global Renewable Electrical Energy Network cell — a modular system designed to power merchant vessels using containerized power units. The idea was subsequently introduced in an ABB magazine and has remained under development as part of an open innovation process.

The core team behind the initial design included Finnish electrical engineers Jaakko Aho, Jukka Varis, and Klaus Vänska. These engineers focused on creating a fossil-free marine propulsion system that could integrate seamlessly into existing shipping logistics through standardized container formats. Their work laid the foundation for a scalable, renewable energy-based solution tailored to the unique demands of global maritime transport.

How does the GREEN Cell technology work?

The GREEN Cell technology functions as a modular, containerized power generation and storage unit designed to integrate into global maritime logistics. The system combines three distinct energy sources within a standard shipping container footprint: chemical energy storage, solar photovoltaic arrays, and wind turbines. This hybrid approach allows merchant vessels to draw power from a decentralized network rather than relying solely on onboard diesel generators or shore-side connections.

Component Architecture

The core of the GREEN Cell is its energy storage system. The concept specifies the use of either lithium-ion or sodium-sulfur batteries to store electrical energy. These chemical storage units provide the baseline power output required for vessel operations, smoothing out the variability of the renewable inputs. The battery modules are designed to be swappable, facilitating maintenance and capacity upgrades within the global logistics chain managed by ABB Group.

Solar energy is harvested through photovoltaic panels integrated into the container structure. These panels capture solar radiation and convert it directly into electricity, which is then fed into the battery storage or used for immediate load demand. The solar component provides consistent power during daylight hours and complements the wind energy input.

Wind energy is captured using a vertical-axis wind turbine. This design choice is critical for the maritime environment and the containerized form factor. Vertical-axis turbines are less sensitive to wind direction changes compared to traditional horizontal-axis models, making them suitable for the variable wind patterns encountered on deck or in port. The turbine generates electricity that charges the battery bank, enhancing the overall energy density of the cell.

The integration of these components creates a self-contained power unit. The energy balance within the cell can be represented by the relationship between input generation and storage capacity, where the total available energy E_total is the sum of stored chemical energy E_batt, solar input P_solar, and wind input P_wind over time t. This modular design supports the open innovation process initiated by ABB Group engineers in 2009, allowing for iterative improvements in efficiency and capacity.

Solar power integration on container ships

The GREEN Cell concept incorporates solar power integration as a supplementary energy source for merchant vessels, utilizing the extensive surface area available on container ships. The design features specialized containerized power units where the doors are configured to open length-wise, effectively covering neighboring containers to create a continuous solar harvesting surface. According to the technical specifications of the concept, this configuration provides up to 93 m² of surface area per cell. This structural adaptation allows for efficient use of deck space, turning standard container positions into active power generation zones.

Power Output Calculations

Calculations associated with the GREEN Cell project indicate a power output of 12 kW per individual cell. When scaled to a fleet of 100 cells, the total capacity reaches 1.2 MW. For larger vessels, such as the Emma Maersk, the potential for solar integration is significantly higher. The concept proposes that a ship with a surface area of 20,000 m² could achieve a potential solar capacity of 10 MW. These figures are derived from the specific geometric and energetic parameters defined in the ABB Group's thought experiment and subsequent open innovation process. The relationship between surface area and power output can be represented as:

P_total = N_cells × P_cell

Where N_cells is the number of units and P_cell is the power per cell (12 kW). For the Emma Maersk scenario, the total potential is calculated based on the available 20,000 m² surface area. This integration strategy aims to reduce the reliance on traditional fuel sources by harnessing renewable electrical energy directly on the vessel. The concept remains under development, with these solar integration details serving as a key component of the global logistics chain for managing containerized power units. The design emphasizes modularity, allowing ships to adjust their solar capacity based on route requirements and available deck space. This approach aligns with the broader goal of the GREEN Cell initiative to create a flexible and renewable energy network for the shipping industry.

What are the operational implications for GREEN Cell ships?

The GREEN Cell Shipping concept requires significant modifications to merchant vessel architecture, fundamentally shifting the balance between propulsion systems, fuel storage, and cargo capacity. The core operational implication involves integrating electrical connections to hundreds of containerized power units, transforming the ship from a self-contained power generator into a modular electrical network. This approach relies on the ABB Group’s proposed global logistics chain to manage these containers, as outlined in the 2009 thought experiment conducted in Oslo, Norway.

Weight and Space Trade-offs

A critical aspect of the GREEN Cell operational model is the trade-off between traditional mechanical weight and the added mass of the modular cells. By adopting this system, ships can forgo substantial components of conventional diesel-electric propulsion. Specifically, the system allows vessels to eliminate approximately 75 tons associated with the diesel engine itself. Additionally, the need for a 25-ton frequency converter is removed, further reducing the mechanical footprint in the engine room.

Perhaps the most significant weight reduction comes from fuel storage. Traditional vessels must carry large reserves of petroleum, with fuel tanks accounting for roughly 3000 tons of weight. Removing these tanks frees up considerable mass and volume. However, this gain is partially offset by the added weight of the GREEN Cell units themselves. The operational efficiency depends on the balance between the saved weight (engine, converter, and fuel) and the variable weight of the containerized power sources.

These modifications also impact cargo space. The volume previously occupied by 3000 tons of petroleum fuel tanks becomes available for cargo or the cells themselves. The reduction in engine room size (75 tons of engine plus 25 tons of converter) further contributes to spatial efficiency. The net gain in cargo capacity is a function of the difference between the volume of the removed components and the volume of the installed cells. This spatial reconfiguration allows for a more flexible use of deck and hold space, adapting to the logistics of the global renewable electrical energy network.

The operational model remains under development as part of an open innovation process, meaning the exact specifications for electrical connections and weight distributions may evolve. The concept challenges traditional ship design by prioritizing modularity and renewable energy integration over fixed mechanical systems. The success of this model depends on the ability to manage the global logistics chain for the cells, ensuring that ships can access power units efficiently at various ports.

Global logistics and infrastructure network

The GREEN Cell concept relies on a dual-node infrastructure: floating power stations, termed GREEN Cell hubs, and shoreside GREEN Cell centres. These hubs are positioned along major maritime trade routes to generate and store energy. The system utilizes a mixed energy portfolio, incorporating wave, wind, flywheel, solar, and current-driven turbines to produce electricity. This electricity powers containerized power units, which are then transported to vessels. The shoreside centres are located at container terminals, facilitating the switching and management of these cells. This infrastructure supports the global logistics chain required for the concept. The system was developed by engineers at the ABB Group in 2009. The open innovation process continues to refine these infrastructure components. The design aims to integrate renewable energy directly into shipping logistics.

Infrastructure Components

Floating hubs serve as generation and storage nodes. They capture energy from multiple sources. Wave energy converters harness ocean motion. Wind turbines capture air currents. Solar panels utilize sunlight. Flywheels provide mechanical storage. Current-driven turbines use ocean flows. These hubs generate electricity for the containerized cells. The cells are then shipped to ports. Shoreside centres manage the cells at terminals. They handle the switching of cells between vessels. They also manage the logistics of cell distribution. This ensures a continuous power supply for merchant ships. The integration of these nodes creates a global network. The network supports the GREEN Cell shipping model. The system remains under development. The ABB Group continues to evaluate the infrastructure. The goal is to create a scalable renewable energy solution for shipping.

The infrastructure design emphasizes modularity. Containerized units allow for flexible deployment. The hubs can be positioned based on energy potential. The shoreside centres integrate with existing port infrastructure. This reduces the need for new construction. The system aims to minimize the carbon footprint of shipping. The use of renewable sources is central to the concept. The ABB Group's engineers developed this model in Oslo. The concept was introduced in an ABB magazine. The open innovation process involves continuous feedback. The infrastructure supports the global renewable electrical energy network. This network aims to transform merchant shipping. The system remains a proposed solution. Further development is required for full implementation. The potential for global adoption depends on infrastructure scalability.

Significance

The GREEN Cell Shipping concept represents a structural shift in maritime energy logistics, moving away from static onboard power generation toward a dynamic, global renewable electrical energy network. Developed through an open innovation process initiated by engineers at the ABB Group in 2009, the concept proposes replacing traditional diesel engines with modular, containerized power units. This approach allows merchant vessels to utilize standardized energy cells that can be charged, swapped, and managed across a global supply chain, effectively decoupling the vessel's propulsion system from the immediate location of energy production.

Addressing Maritime Carbon Emissions

Merchant shipping is a significant contributor to global greenhouse gas emissions, accounting for approximately 4% of the world's total CO2 output. The GREEN Cell concept aims to eliminate fossil fuels from this sector by integrating renewable energy sources directly into the logistics chain. By utilizing containerized power units, the system enables the use of electricity generated from diverse renewable sources, such as wind, solar, or hydroelectric power, depending on the geographic location of the charging infrastructure. This modularity allows for greater flexibility in energy sourcing, reducing reliance on heavy fuel oil and marine diesel.

Open Innovation and Modular Design

The concept emerged from a thought experiment conducted on March 13, 2009, in Oslo, Norway, and has since been developed as part of an open innovation process. This collaborative approach involves continuous input from engineers, industry partners, and stakeholders to refine the technical and logistical frameworks of the system. The modular design of the power units facilitates easier maintenance, scalability, and integration with existing ship architectures. By standardizing the power cells, the concept seeks to create a universal energy currency for maritime transport, similar to how shipping containers revolutionized global cargo logistics.

The potential impact of GREEN Cell Shipping extends beyond environmental benefits, offering economic advantages through optimized energy management and reduced fuel volatility. As the global shipping industry seeks to meet increasingly stringent emission targets, the integration of renewable energy networks through modular power units presents a viable pathway toward sustainable maritime transport. The ongoing development of this concept continues to explore technical solutions for energy density, charging infrastructure, and global coordination, aiming to transform the maritime sector into a key player in the global renewable energy network.

See also

• Laxede Power Plant: Engineering and Operations
• Stalon Powerplant: Engineering and Operations
• Kvilldal Power Station
• North Sea Link: Norway-UK HVDC Interconnector
• Buksefjorden Power Plant: Engineering and Operations