Portugal Energy Storage Solutions | 20kWh Lithium Battery & DEYE Inverter Installation

Power Shortages in Portugal

On April 28, 2025, a rare large-scale power outage occurred in parts of Spain, Portugal, and France, affecting millions of people. The outage plunged the affected regions into darkness, causing transportation and communication services to grind to a halt. Many residents had to rely on radios for updates and rushed to supermarkets to stockpile food and drinking water. Even the Madrid Tennis Open was forced to suspend its events. This marked the most severe power outage in Europe in recent years.

Despite significant progress in energy transition in recent years, Portugal continues to face power supply pressures. Especially during summer heatwaves and extreme winter weather, surging electricity demand exceeds grid capacity, leading to power outages in some areas. This large-scale outage once again highlights the importance of installing energy storage systems for both residential and commercial users.

Portugal's Energy Storage Solutions

In the face of grid instability and power outage risks, battery energy storage systems have become a key solution for a stable power supply. By combining solar power with energy storage batteries, users can not only store electricity during the day for use at night or during power outages but also reduce electricity costs and achieve self-sufficiency in green energy. Battery energy storage systems have become an indispensable core component of Portugal's energy transition.

To enhance energy security and reduce electricity costs, energy storage systems have a wide range of applications in Portugal:

Residential energy storage systems (5kWh–20kWh Battery): Used in conjunction with solar rooftops, these systems store energy during the day and supply power at night or during power outages, ensuring the operation of essential loads such as lighting, internet, and refrigerators. For households frequently affected by power outages, this is an essential choice to ensure stable living conditions.

Commercial and industrial energy storage systems (50kWh–1MWh+): Suitable for scenarios such as shops, factories, and office buildings. By shaving peaks and filling valleys to reduce electricity costs, they serve as backup power during outages, ensuring uninterrupted production and operations while aligning with corporate green energy strategy goals.

Prices for solar energy storage battery systems in Portugal

In Portugal, the cost of battery energy storage systems varies depending on capacity, brand, and configuration:

Residential energy storage (approximately 10kWh capacity): 7,000–12,000 euros (including batteries and inverters).

Commercial and industrial storage (50kWh – 100kWh capacity): 30,000 – 80,000 euros, with customizable pricing for large-scale projects.

Although the initial investment is high, the long-term cost savings and safety benefits of energy storage systems are highly valuable when considering local electricity price fluctuations and power outage risks.

GSL ENERGY's Energy Storage Installation Case in Portugal

In August 2025, GSL ENERGY deployed two high-performance energy storage systems for a client in Portugal. The systems utilize the latest wall-mounted 51.2V 200Ah 10.24kWh lithium iron phosphate batteries, paired with DEYE inverters, to form an efficient and safe home energy storage solution.

This 20kWh battery solution offers the following advantages:

Safety and reliability: Utilizes high-quality lithium iron phosphate batteries with a long cycle life and excellent stability;

Flexible scalability: Supports parallel connection of multiple units to meet the needs of residential and small commercial applications; can be scaled up to 16 units for a total capacity of 160kWh.

Emergency power supply: Ensures uninterrupted power supply during grid outages, maintaining lighting, communication, and essential household equipment operations.

Through this installation, Portuguese users can now confidently handle power outages, ensuring energy independence and convenience in daily life. This case not only demonstrates GSL ENERGY's technical capabilities in the global energy storage market but also reaffirms the core value of energy storage systems in addressing energy uncertainties.

Why recommend GSL ENERGY energy storage batteries for Portugal?

Global certifications: Certified by CE, IEC, UN38.3, and other international standards, compliant with EU market requirements;

Factory Direct Supply: As a storage battery manufacturer, GSL ENERGY offers OEM/ODM customization, providing higher cost-effectiveness.

International Experience: Products have been exported to over 138 countries, with over 12,000 successful cases across Europe, the Americas, Oceania, the Middle East, and Africa.

Sustainable Energy: Combining solar energy to achieve self-sufficiency in clean energy, aligning with Portugal's renewable energy development direction.

GSL ENERGY's energy storage solutions not only help Portuguese users effectively mitigate the risks posed by large-scale power outages but also provide a solid foundation for local energy independence and green sustainable development. As Portugal continues to advance its clean energy transition, GSL ENERGY will continue to collaborate with local partners to enable more households and businesses to achieve energy freedom, fostering a more stable, secure, and green future energy system.