**At 12:30 p.m. local time on April 28, 2025, Europe suffered a massive power outage, plunging multiple countries into chaos. Spain and Portugal experienced nationwide blackouts, affecting over 50 million people. Airports were closed, trains and subways halted, and traffic lights, ATMs, and communication networks were paralyzed.**

**Red Eléctrica, the Spanish power company, stated that it is working with energy companies to restore power supply. The estimated time for power restoration is between 6 to 10 hours, depending on the specific conditions in each region.**

**(According to foreign media reports, the power outage led to the closure of airports, suspension of train and subway services, failure of traffic lights, and severe traffic paralysis. Telephone lines were also interrupted, and internet services were affected.)**

**This power outage is considered an “absolutely abnormal” event. It is likely caused by a failure in the European power grid system, which disrupted the connection of the power grids in the Iberian Peninsula countries. The Portuguese power grid operator said that data monitored by mobile phones after the power outage indicated that voltage imbalance might be the cause of the grid collapse. The Portuguese Prime Minister stated that the accident, which caused millions of people in the Iberian Peninsula to lose power, likely originated in Spain. The Spanish authorities have not yet disclosed the cause or origin of the massive power outage. The event highlights the vulnerability of the power grid. Spanish authorities said that the power outage was caused by a phenomenon called “oscillation.” Oscillation refers to the rapid fluctuation of grid frequency (which is usually kept around 50 hertz to maintain grid stability). According to data from Gridradar, a frequency monitoring expert, this is exactly what happened in Spain after noon. Such oscillations can trigger a chain reaction, ultimately leading to a power outage. The sudden large-scale power outage not only disrupts urban lifelines such as transportation and communication but also plunges millions of households and businesses into a prolonged power crisis. In response to such extreme power crises, enhancing the resilience of the power grid and the ability to restore power quickly has become crucial—energy storage technology, as the stabilizer of the power grid, can reconstruct the power lifeline in seconds.**

**Especially in Europe, where the utilization rate of renewable energy sources such as wind and solar is high (on April 16, Spain was confirmed to have achieved 100% renewable energy supply for the first time in its national power grid), liquid flow battery long-duration energy storage systems have unique and inevitable advantages in solving sudden, long-term, and large-scale power outages:**

**Long-term stable power supply to ensure power security: In the event of extreme power interruptions or grid failures, liquid flow energy storage systems can provide power support for several hours, or even several days. In the case of the power outage in Spain and Portugal, power restoration is expected to take 6 to 10 hours, and liquid flow energy storage systems are the ideal choice to fill this time gap. They can provide continuous power to ensure that critical facilities such as medical institutions, transportation systems, and communication networks do not collapse due to power outages.**

**Enhancing grid stability and balancing renewable energy fluctuations: With the increasing proportion of renewable energy, the stability of the power grid faces new challenges. The volatility of wind and solar energy requires the support of intelligent energy storage systems. Liquid flow energy storage systems can effectively store excess electricity and release it during peak power demand, optimizing the dispatch efficiency of the power grid and improving the overall stability of the power system.**

**Emergency response and long-term sustainable development: In the event of sudden power interruptions, liquid flow energy storage systems can not only respond quickly to provide emergency power support but also have high safety and environmental friendliness. Using water-based electrolytes, they avoid the potential fire or hazardous substance leakage problems associated with traditional energy storage systems. Their long service life and low maintenance requirements make them a key component of sustainable development.**

**In the context of the increasing complexity of global power systems, liquid flow energy storage technology is becoming a key support for ensuring power security, enhancing grid resilience, and promoting the green energy transition.**

**Shenzhen ZH Energy Storage Technology Co., Ltd. is committed to providing safe, efficient, and long-duration liquid flow energy storage solutions for global customers, helping to build a more resilient new power system. Our systems have undergone rigorous research and development testing and market validation and have been applied in multiple industries, from urban power grids to renewable energy projects, providing stable and efficient energy storage support. ZH Energy looks forward to working with you to provide solid technological support for the global green energy transition and the construction of a new power system, and to build a zero-carbon future together.**

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Vanadium Redox Flow Battery - Energy Storage System / BMS

Liquid Flow Battery - Non-Fluorinated Ion Exchange Membrane

LAB Series R&D Demonstration Equipment

NeLCOS® Energy Storage System Levelized Cost of Energy Calculator