GSL ENERGY 2MW/4.6MWh AC-Coupled Energy Storage System in Lebanon

In June 2025, GSL ENERGY successfully deployed a 2 MW/4.6 MWh AC-coupled, liquid-cooling energy storage system for a plastic factory in Lebanon. Designed for seamless integration with solar PV, diesel generators, and unstable local grids, the system enhances energy reliability, boosts energy efficiency, and enables full on- and off-grid flexibility.

Given the region’s harsh desert climate—characterized by high temperatures and heavy dust—this deployment demanded not only smart integration but also robust, long-lifespan infrastructure. GSL ENERGY tailored a rugged and intelligent solution to meet the environmental and operational demands of the Middle East market.

System Configuration Overview

Total System Name: GSL CESS-2MW-4.6MWh

Application: Peak shaving, energy arbitrage, load backup, and off-grid resilience

Architecture: AC-Coupled, fully integrated with solar and diesel genset

Battery Storage System (Total: 4.6 MWh, Liquid Cooling)

Two 20-ft battery containers, each including:

10 x 232kWh lithium battery modules (per container) = 2.32 MWh

Integrated BMS-HMI DC bus control unit

Liquid cooling system for thermal stability and safety

Fire suppression, lighting, and auxiliary systems

Total: 2 × 2.32MWh = 4.64MWh (rounded to 4.6MWh)

Power Conversion System (PCS)

PCS Cabinet includes:

2 x 1MW PCS units (AC-grid connected, total 2MW output)

1 x 1000kVA transformer

1 x 2000kW ATS (Automatic Transfer Switch)

EMS (Energy Management System) for real-time optimization and remote control

Fire protection, lighting, and other auxiliary systems

System Features & Benefits

AC-Coupled PV Compatible: Seamlessly integrates with the site’s photovoltaic system

Diesel Generator Support: External gensets serve as a standby for enhanced off-grid reliability

Flexible Operation Modes: Fully supports on-grid, off-grid, and hybrid modes

In June 2025, GSL ENERGY engineers arrived on-site in Lebanon to provide comprehensive support for the installation of this large-scale energy storage project.

Our team carried out system commissioning, testing, and full integration, ensuring seamless compatibility with leading inverter brands.

They also offered real-time troubleshooting and delivered localized training to empower the customer's technical team with hands-on operational knowledge. Our local partners highly appreciated their expertise and professional service.

On-Site Commissioning & Training

GSL ENERGY engineers arrived on-site to carry out end-to-end deployment, including installation, system commissioning, and testing.  Our team ensured seamless compatibility with the site's existing PV and inverter systems through professional integration services.

Moreover, we provided localized technical training and live troubleshooting support, empowering the customer's engineering team with essential knowledge for future operation and maintenance.  The client highly appreciated GSL ENERGY's responsive service and technical expertise.

Conclusion

This successful 2MW/4.6MWh deployment demonstrates GSL ENERGY's capability to deliver scalable, intelligent, and resilient energy storage systems under challenging environmental conditions.  It is a powerful solution for commercial users looking to achieve energy independence, reduce costs, and improve sustainability, especially in regions with unstable grid infrastructure.