• Dagong ESS

Spain's €4.5B Blackout Lesson: No Storage, No Stable Grid

Event Recap: How 5 Seconds Paralyzed Two Nations—Why Did 75% Green Power Fail?

On April 28, Spain and Portugal experienced a nationwide blackout. In just 5 seconds, 60% of power demand vanished. Subways halted, traffic lights failed, tens of thousands were trapped in elevators, and economic losses reached €2.25–4.5 billion.

The shocking truth? At the time of the incident, 75% of Spain’s electricity came from wind and solar. Yet, the sudden shutdown of two major solar farms triggered a grid imbalance, activating safety protocols that led to a cascading collapse.

The Root Problem: High Renewables + Low Storage = Systemic Risk

Spain’s energy transition was once hailed as a "European model." But this disaster exposed a fatal flaw—over-reliance on intermittent renewables without sufficient energy storage.

Unstable solar & wind: Cloudy or windless conditions cause sudden power drops, destabilizing the grid.

Insufficient storage: No buffer for fluctuations, allowing local failures to spread rapidly.

Cross-border grid dependence: When the connection to France failed, the system collapsed entirely.

Prime Minister Pedro Sánchez admitted: "Nuclear power isn’t more resilient than renewables." But the real issue isn’t green energy itself—it’s the lack of storage as a stabilizer.

Dagong ESS Energy Storage Solutions: Making Green Energy Truly Reliable

Dagong ESS provides high-safety, long-life, smart energy storage systems to ensure grid stability even in extreme scenarios:

✅ Millisecond response: Instantly compensates for power gaps, preventing voltage collapse.
✅ 30-year lifespan: Built for harsh conditions (heat, humidity) to ensure long-term reliability.
✅ AI-powered energy management: Smooths renewable fluctuations, enhancing grid resilience.

Global Case Studies: How Dagong ESS Safeguards Energy Security

China’s Wind & Solar Farms: Reduced curtailment rates by 80% with Dagong ESS storage.

European Microgrids: Maintained 72 hours of backup power during extreme weather.

Industrial & Commercial Storage: Helps businesses cut costs while ensuring emergency power.

Dagong ESS Products Showcase

At Dagong ESS, our energy storage products evolve alongside cutting-edge technologies, becoming increasingly advanced and intelligent. Below is a showcase of Dagong ESS's latest energy storage solutions:

Industrial & Commercial ESS:Industrial and commercial energy storage is a storage solution applied in industrial and commercial settings. It mainly consists of a battery system along with components such as EMS (Energy Management System), BMS (Battery Management System), and PCS (Power Conversion System). Its core functions include reducing electricity costs by leveraging the price difference between peak and off-peak hours, serving as an emergency backup power source during grid failures to ensure the operation of critical equipment, improving power quality by regulating power factor and mitigating harmonics, and balancing electricity load. 

Residential ESS:The Residential Energy Storage System refers to energy storage solutions designed for residential or light commercial use. These systems allow for the efficient storage and management of electrical energy, typically derived from renewable sources such as solar panels, and can be used to power homes or small businesses during periods of high demand or when renewable energy generation is not available.

Price of Dagong ESS energy storage products equipped with high-performance BMS

The price of Dagong ESS energy storage products equipped with high-performance BMS is based on EXW (Ex Works) terms and may vary depending on the supplier, quantity, and market conditions.You may need to request a quote from a reputable energy storage system supplier to get the most accurate pricing. Please note that the final costs may vary based on fluctuations in raw material prices and exchange rates.

Professional Energy Storage System Supplier - Dagong ESS

Dagong ESS (Dagong New Energy) focuses on providing comprehensive solutions for intelligent new energy equipment. This energy storage system (ESS) from Dagong ESS is a reliable and high-efficiency solution for your business energy storage needs.

If you are looking for energy storage products equipped with high-performance BMS or want to know more about the technical information, please feel free to contact Dagong ESS.