Project Overview

Located in a beach tourism area in the Maldives, this project was designed to support local commercial electricity demand where grid supply can be limited and unexpected outages may affect daily business operations.

Huijue supplied a 135kW/261kWh hybrid grid-connected and off-grid liquid-cooled energy storage system. The system combines photovoltaic power generation, energy storage, inverter control, and EMS energy management to help local commercial users improve power reliability, increase solar self-consumption, and reduce dependence on diesel backup power.

The project operates under a “self-generation and self-consumption, surplus power storage” model. During normal operation, solar power supports daily loads and charges the battery system. When grid supply becomes unstable or unavailable, the system can switch to off-grid operation to maintain power for key loads.

Project Information

Project Background

The Maldives has abundant solar resources, but island and coastal commercial areas often face practical energy challenges, including limited grid capacity, high diesel generation costs, and power instability during peak tourism periods.

For local businesses, power reliability is not only an energy issue. It directly affects lighting, refrigeration, communication, daily operation, and customer experience. A compact, outdoor-rated, and highly integrated PV + storage system was therefore selected to improve local power supply stability.

System Configuration

The project adopts a 135 kWp photovoltaic system combined with a 135kW/261kWh liquid-cooled energy storage system.

The energy storage cabinet integrates battery packs, BMS, PCS, EMS, temperature control, power distribution, and fire protection into one compact outdoor cabinet. This integrated design reduces installation complexity and is suitable for commercial sites with limited installation space.

For similar project applications, Huijue’s cabinet energy storage system can be configured according to load demand, backup duration, grid condition, and solar generation capacity.

Key Equipment

Liquid-Cooled Energy Storage Cabinet

The outdoor cabinet is designed for demanding coastal environments. With IP55 protection and C4-grade corrosion resistance, it is better suited for high humidity, salt fog, and high-temperature conditions commonly found in island and seaside locations.

The liquid-cooling system helps maintain battery temperature uniformity, supporting stable operation and long-term battery performance.

Photovoltaic-Storage Inverter

The 135kW photovoltaic-storage inverter supports grid-connected and off-grid operation. It helps coordinate solar generation, battery charging and discharging, and load power supply.

When grid power is unstable, the system can switch operating modes quickly to support critical loads.

LiFePO4 Battery System

The 261kWh battery system uses lithium iron phosphate battery technology, which is widely used in commercial and industrial energy storage because of its safety, cycle life, and thermal stability.

Smart EMS

The EMS monitors solar generation, battery status, load consumption, and system operation. It can adjust charging and discharging strategies according to real-time operating conditions, helping improve system efficiency and reduce manual operation pressure.

For broader PV-storage applications, Huijue also provides integrated solar + storage solution designs for commercial sites, remote projects, telecom infrastructure, and microgrid scenarios.

Project Advantages

1. Improved Power Reliability

The system supports both grid-connected and off-grid operation, helping commercial users maintain electricity supply when the local grid is unstable.

2. Higher Solar Energy Utilization

Solar power can be used directly by the load, while surplus generation is stored in the battery system for later use. This helps reduce wasted solar energy and improves self-consumption.

3. Suitable for Coastal and Island Conditions

The outdoor cabinet design, liquid-cooling system, anti-corrosion protection, and integrated safety system make the project suitable for high-humidity and salt-fog environments.

4. Compact and Fast Deployment

The all-in-one cabinet structure reduces on-site installation work. This is especially useful for island projects, commercial resorts, remote facilities, and locations where construction time and space are limited.

5. Flexible Expansion

The modular energy storage design allows future capacity expansion based on load growth, business development, or additional solar installation.

Application Value

This Maldives project shows how a medium-scale commercial energy storage system can support island energy resilience.

Instead of relying only on the public grid or diesel generators, the customer can use solar power during the day, store excess electricity, and maintain backup power during unstable grid conditions. This makes the solution suitable for commercial buildings, resorts, tourism facilities, island communities, remote industrial sites, and microgrid projects.

Conclusion

The Maldives 135kW/261kWh hybrid grid-connected and off-grid liquid-cooled energy storage project demonstrates the value of integrated PV + BESS systems in island and coastal commercial applications.

By combining solar generation, liquid-cooled battery storage, inverter control, and EMS management, the system helps improve power reliability, reduce dependence on diesel backup, and support cleaner commercial energy use.

For project-specific design, Huijue can provide customized system configuration based on site location, load profile, solar resources, backup time, grid conditions, and installation environment. Contact the Huijue project team to discuss a suitable solar + storage solution for your project.