40kW+150kWh Off Grid Solar Warehouse in Marshall Islands

NAMKOO
October 10, 2025
84

Namkoo is proud to announce a groundbreaking 40KW off-grid solar system installation for a lumber mill and warehouse in the Marshall Islands. As part of a project funded by the US federal government, Namkoo successfully completed a highly competitive bidding process with stringent requirements for energy suppliers. Our solution offers a sustainable and reliable power source for the warehouse, solving the region’s perennial power shortage problem while utilizing clean energy.

At Namkoo, we are committed to providing integrated systems solutions that meet the unique energy challenges faced by island communities and industries. This project is a prime example of how we leverage advanced technology to solve power problems in remote locations.

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The Challenge: Power Shortages in the Marshall Islands

The Marshall Islands is a remote island nation in the Pacific Ocean, where power supply is often unreliable, and resources are limited. Due to the high demand for electricity in the lumber mill and warehouse, particularly for air conditioning in the warehouse, the power grid frequently experiences outages.

The warehouse relies on solar warehouse solutions to meet its energy needs. In this specific case, the demand comes from two distinct types of power usage:

1. Conventional office appliances: These include computers, lights, refrigerators, printers, and small water pumps, all running on 110V AC power.

2. Air conditioning units: Due to the hot climate in the region, the warehouse uses four 220V AC air conditioners, designed to cool the space and protect valuable materials stored inside.

    With power demands fluctuating throughout the day and the risk of power outages from the grid, there was a clear need for an off grid solar system that could provide reliable energy.

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    Namkoo’s Solution: A 40KW Off-Grid Solar Power System

    After careful planning and design discussions with the client, Namkoo proposed a customized off grid solar system capable of meeting the warehouse’s varied power needs. The solution includes a high-efficiency combination of solar panels, inverters, MPPT controllers, and an advanced lithium-ion battery pack, ensuring reliable, 24/7 power regardless of grid availability.

    Key Features of the System:

    45KW Mono Solar Panels: The system is built around 100 high-efficiency, 450W mono half-cell panels using advanced PERC cell technology. These panels achieve an impressive conversion efficiency of up to 21.5%.

    Dual Inverter System: The off-grid solar power system is designed with two separate inverters to handle the dual voltage loads of the warehouse. One 25KW AC110V inverter powers conventional office appliances, while a 15KW AC220V inverter supplies energy to the air conditioners.

    Lithium-Ion Battery Pack (147kWh): The storage solution uses lithium-ion batteries, specifically a lithium iron phosphate battery pack with a long cycle life of 6,000 cycles, ensuring over 15 years of service life. This system provides energy storage to maintain power supply during nighttime or cloudy days.

    Energy Management System (EMS): The EMS efficiently manages the system’s components, ensuring the smooth operation of the controllers, inverters, and lithium batteries, optimizing energy use and extending the lifespan of the equipment.

    Namkoo’s team took care to address the region’s high temperatures and the warehouse’s unique requirements by providing solar-powered hybrid air conditioning units, which offer over 80% energy savings compared to traditional air conditioners.

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    The Installation Process and Challenges

    One of the main challenges during the installation process was the warehouse’s old roof, which was leaking due to the rainy season in the Marshall Islands. To overcome this, the roof needed to be repaired and tiles replaced before the installation of the solar panels. This added some delays to the project timeline, but Namkoo’s team remained dedicated to completing the job with minimal disruption to the client’s operations.

    Despite these challenges, the installation is moving forward, and Namkoo will soon provide updates with photos and videos showcasing the completed system.

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    The Outcome: A Reliable Off-Grid Power Solution

    The 40KW off-grid solar power system has greatly enhanced the energy reliability of the lumber mill and warehouse, allowing it to operate independently of the unstable local power grid. The warehouse can now maintain constant operations, from office equipment to air conditioning, with clean, sustainable energy.

    Freddie, the project leader, shared his satisfaction with the Namkoo products and Namkoo’s technical support. The client appreciated the fast response times and professional service provided by the Namkoo technical team throughout the project, ensuring the system would meet their energy needs for years to come.

    This project serves as a testament to Namkoo’s commitment to providing tailored solutions for industries in remote locations, enhancing energy efficiency and sustainability through off grid solar power.

    Explore Namkoo’s Solutions

    Namkoo is a leader in delivering innovative integrated systems solutions to meet diverse energy needs, including solar warehouse systems for industrial applications. Whether you are looking for an off-grid solar system, battery energy storage systems, or solar power solutions for your business, Namkoo has the right solution for you.

    Visit Namkoo’s High Voltage Rack Mounted Lithium Battery System to learn more about our advanced products and how they can help your business achieve energy independence.

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    FAQ: Off-Grid Solar Solutions for Islands

    1. What is an off-grid solar system?


    An off-grid solar system is a power solution that generates and stores electricity using solar panels, independent of the utility grid. It is ideal for locations without reliable access to the grid, such as remote islands.

    2. How does the lithium-ion battery pack work in an off-grid solar system?

    The lithium-ion battery pack stores excess solar energy during the day, which can be used at night or during periods of low sunlight, ensuring a continuous power supply.

    3. What is the lifespan of a lithium-ion battery in an off-grid system?

    Namkoo uses high-quality lithium iron phosphate batteries that offer a cycle life of 6,000 cycles, providing over 15 years of service life.

    4. Can a solar system power air conditioners?

    Yes, Namkoo’s hybrid photovoltaic air conditioners are designed to run on solar energy, offering significant energy savings—up to 80% compared to traditional air conditioning systems.

    5. How does Namkoo support its clients during and after installation?

    Namkoo provides comprehensive technical support, including system design, installation guidance, and after-sales service to ensure smooth operation and customer satisfaction.

    6. How can I get started with an off-grid solar system for my business?

    To explore off-grid solar solutions tailored to your needs, visit Namkoo’s website for more details and to request a consultation.

    Conclusion

    Namkoo’s 40KW off-grid solar system project for the lumber mill and warehouse in the Marshall Islands showcases our expertise in providing sustainable, reliable, and integrated systems solutions for island communities. By offering off-grid solar power, lithium-ion battery packs, and photovoltaic energy solutions, Namkoo is helping businesses thrive in remote locations while reducing reliance on expensive and unreliable grid power.

    Discover more about our solar power systems and how they can benefit your business today at Namkoo.

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    Guangdong Namkoo Power Co.,Ltd.

    No.133 Jingying International Business Center, Jihua West Road, Chanchen District,Foshan,Guangdong, China (528000)

    Contact Number: +86 18826309307

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