High-speed rail services came to a standstill, metro systems shut down, and airports faced widespread delays and cancellations. City traffic lights went dark, plunging urban centers into chaos. Financial systems ground to a halt—ATMs were disabled, electronic payments failed, and trading on the Barcelona Stock Exchange was disrupted. Hospitals were forced to rely on diesel generators, while major communication networks experienced significant outages. This sudden regression to a “pre-electric age” underscores the profound vulnerability of our infrastructure—and the vital role electricity plays as the backbone of modern society.

1. A Fragile System: The “Achilles’ Heel”

Prior to the incident, photovoltaic (PV) power held a dominant position in Spain’s electricity system. According to data from the Spanish national grid, during the blackout, system load dropped from 25 GW to 10 GW around midday, then gradually recovered. Some analyses suggest that the high proportion of PV generation may have been a key contributing factor, highlighting the stability challenges facing European power grids with high penetration of renewable energy.

Unlike conventional synchronous generators such as coal and nuclear plants, renewable sources like wind and solar are typically current-based power sources and lack the synchronous inertia support that power systems require. Under high-penetration scenarios, the overall system inertia is reduced, weakening the grid’s ability to withstand disturbances. This makes frequency and voltage instability more likely, increasing the risk of a grid collapse.

III. The Critical Role of Energy Storage in Enhancing Grid Resilience

1. Primary Frequency Regulation: Critical Support for Grid Balance

With millisecond-level frequency and voltage regulation, the PANGU OS intelligent energy management system can suppress localized faults and enhance system stability.

2. The Role of Virtual Synchronous Features in Modern Power Systems

It simulates the inertia of synchronous generators and short-circuit current capabilities, delivering “virtual inertia” to high-renewable systems. Inertia deficiency was identified as a critical factor contributing to the blackout.

3. Secondary and Tertiary Regulation: Smoothing and Dispatch

Stores surplus solar energy during the day and releases it at night or during low-wind periods, helping to maintain a dynamic balance between supply and demand.

4. Enhancing Renewable Utilization

Reduces curtailment of wind and solar energy, increasing renewable absorption capacity.

5. Virtual Power Plants

Aggregates distributed storage systems for decentralized frequency regulation and system-level flexible dispatch.

6. Critical Load Backup

Seamless power switchover for hospitals, data centers, and communication towers ensures business continuity during outages.

7. All-Scenario Backup Power

Reliable backup solutions for commercial, industrial, and residential users significantly reduce economic losses during blackouts.

1. Next-Generation System Restart Solutions

Traditional black starts rely on diesel generators, which proved slow and underpowered during the Iberian crisis. WHES has innovated a grid-forming storage system with three core breakthroughs:

1. Millisecond-Level Support
   Instantly establishes voltage and phase reference in a full-grid blackout, enabling black start in milliseconds.
2. Low-Voltage Parallel Algorithm
   Unique 0.4 p.u. low-voltage pre-synchronization mechanism allows multiple PCS devices to self-coordinate without communication lines, improving load capacity by 300%. Patent: “A Droop Control Method and Device for Energy Storage Converter in Off-Grid Mode” (ZL2024102576349)
3. AI Resilience Simulation
   As a Tier 1 global digital energy service provider, WHES optimizes black start paths dynamically based on extensive real-world data, raising the success rate from an industry average of 67% to 98%.

WHES has already delivered basic load support systems for villages, drilling sites, construction projects, and homes in Malaysia, Vietnam, the Netherlands, and beyond.

1. Five-Dimensional Defense for the New Power System

Addressing key weaknesses such as inertia loss and declining frequency regulation, WHES introduces its “Energy Immunity Shield”:

Backed by advanced power electronics, WHES delivers a new generation of intelligent storage solutions with inertia support, acting as the “shock absorber” of the grid. Unlike traditional wind and solar which lack inertia and damping, WHES systems buffer grid fluctuations, enhancing overall stability and resilience—ensuring safe grid operation in an energy landscape dominated by renewables.

WHES’s storage products are widely deployed in Europe and globally, providing valuable services such as frequency regulation and grid support — becoming a key driver of the global energy transition. With visionary technology and robust delivery capabilities, WHES is steering intelligent storage toward a higher-value future.

1. Whole-Home Energy Backup for Residential Storage: WHES Empowers Household Energy Autonomy

In response to the severe challenge of an average 16-hour power outage during the Iberian Peninsula blackout, WHES leverages core technological breakthroughs to overcome traditional backup power limitations, launching a comprehensive smart whole-home backup power solution. The system is equipped with the self-developed ECOS energy management platform, creating a millisecond-level responsive household electricity lifeline:

• Seamless Switching Guarantee: Featuring proprietary EPS technology (<10ms switching speed), the system takes over power supply instantly upon grid failure, avoiding the slow startup and failure risks of traditional diesel generators.
• Extended Runtime Configuration: The self-developed MYRTILLO modular battery box supports capacity expansion from 5–30kWh. Coupled with long-life cycle battery cells, it ensures uninterrupted power for sensitive loads such as home medical equipment and central air conditioning.
• Smart Control for Extreme Weather: Equipped with AI-based weather prediction algorithms and -20°C self-heating battery technology, the system pre-charges automatically before blizzards or typhoons, solving the issue of storage system failure in harsh European winters. Its intelligent bus dynamic voltage regulation supports 2x solar overprovisioning, addressing weak solar generation during extreme weather.
• AI Household Load Prediction Engine: Trained on data from 2 million households, the load prediction model achieves over 92% accuracy. The proprietary “power fingerprint” recognition algorithm, combined with the Smart Panel (a non-intrusive smart electricity meter), automatically learns the operation patterns of high-consumption devices like air conditioning and floor heating.
• Three-Phase Balanced Output: Supports 110% unbalanced three-phase loads, ensuring stable operation of high-power equipment like floor heating and pool circulation systems in European villas.

Four-Level Safety Protection System:

• Cell Level: UL9540A certified
• System Level: Pack-level fire safety technology, temperature difference control within ±1.5°C
• Household Level: Arc fault detection (AFCI) with response time <2.5 seconds
• Network Level: Encrypted communication module, compliant with EN 303 645 cybersecurity standard

VII.WHES: Comprehensive Solutions for Every Energy Storage Need

Grid-Side (Utility ESS)

Large-scale storage systems with PANGU OS for grid-level frequency and voltage regulation, ensuring safe integration of high-renewable power.

Commercial & Industrial (C&I ESS)

PowerCore all-in-one storage cabinets with seamless grid/off-grid switching, helping businesses with peak shaving and demand response.

Residential (Home ESS)

PowerPod and BatteryBox hybrid inverters for integrated solar and storage—smarter, safer home power.

Core Technical Advantages

• In-House Development: High-performance PCS, smart BMS, intelligent EMS (PANGU OS)
• AI Smart Dispatch: Real-time optimization of solar generation, load, and grid interaction
• Comprehensive Safety: Liquid cooling, cell-to-system protection, UL9540A, IEC62933 compliance

Global Delivery Network

Projects deployed in over 38 countries and regions across Europe, Asia, Oceania, and the Middle East—hundreds of MWh already online.
Recognized with the Shanghai Science & Technology Progress Award, Geneva International Invention Gold Medal, and named a Tier 1 global storage provider by BloombergNEF.

VIII. Call to Action: Building a Safer, Sustainable Energy Future Together

The Iberian blackout’s message is clear: passive waiting only magnifies risk—proactive energy storage deployment is urgent.

By choosing WHES, you gain:

• Comprehensive Storage Solutions: Full-scenario coverage from grid to home
• Cutting-Edge Tech & Services: Proprietary innovations, AI+EMS, global support
• Robust Safety Assurance: Multi-layer protection, internationally certified

Act now to strengthen your energy defenses!
Choose WHES—not just a technology provider, but your reliable partner in an uncertain energy future.