In the article “Philippine Solar Battery Company & Solar Storage Solutions,” GSL ENERGY discusses the unstable grid supply in the Philippines and the importance of energy storage systems. In July 2025, GSL ENERGY installed a 20kWh battery paired with a Solis inverter to form a home energy storage system for a household in the Philippines.
This product (GSL-A51-100) is a well-designed residential energy storage battery. Its unique feature is that it supports multiple installation methods, including wall-mounted and stacked configurations. In this case, it was installed side by side against the wall, effectively accommodating the diverse installation requirements and space constraints of different households.
As seen in the images, the installation site features rudimentary conditions, heavy dust and soil, potential rain exposure, and a highly humid environment. However, the GSL-A51-100 battery continues to operate reliably. This ability to provide stable power under non-ideal conditions is a significant advantage for regions like the Philippines, which frequently experience power fluctuations or inadequate infrastructure.
The GSL-A51-100 battery uses safe and reliable LiFePO4 (lithium iron phosphate) chemical technology, with a cycle life of over 6,000 cycles, and supports up to 16 devices in parallel, enabling an energy storage capacity expansion of up to 81.92 kWh. This provides users with great flexibility, whether for daily household power needs or to address prolonged power outages, ensuring an adequate power supply.
The Solis inverter, which works in tandem with the GSL-A51-100 20kWh battery, serves as the “brain” of the entire energy storage system, converting the DC power stored in the battery into the AC power required by the household and intelligently managing the charging and discharging of energy. The Solis inverter is renowned for its high efficiency (up to 98.6%), multiple operating modes, and advanced monitoring system.
In this case study from the Philippines, the Solis inverter seamlessly integrates with the A51100 20kWh battery to optimize energy utilization. It intelligently schedules power based on household electricity demand, solar power generation, and grid status, such as charging during off-peak hours and discharging during peak hours, thereby helping users reduce electricity costs. Additionally, the Solis inverter features a rapid switch function, enabling it to swiftly transition to battery power during grid outages, ensuring uninterrupted household electricity supply and providing users with true energy independence and peace of mind.
This successful installation case in the Philippines not only demonstrates the outstanding product performance of the GSL ENERGY A51100 battery and Solis inverter but, more importantly, provides a reliable, efficient, and adaptable energy solution for households in similar environments in the Philippines and around the world.
This case demonstrates that even under challenging installation conditions, advanced energy storage technology can maximize its effectiveness, bringing users:
Continuous and stable power supply: No longer affected by grid instability or power outages.
Energy cost savings: Optimized charging and discharging strategies reduce electricity expenses.
Environmental friendliness: Fully leveraging clean energy to reduce carbon emissions.
Convenient installation and maintenance: Wall-mounted/rack design and intelligent monitoring systems simplify deployment and management.
Through this case study, GSL ENERGY and Solis once again demonstrate their commitment to providing high-quality, high-performance energy storage solutions that deliver tangible value to users, even in the most demanding environments.