On 3 January 2026, south-west Berlin was hit by a large-scale power outage that affected over 45,000 households and more than 2,000 businesses (AP News). The cause was a fire on a high-voltage cable bridge, which cut off important sections of the grid (Zeit Online). The affected districts included Nikolassee, Zehlendorf, Wannsee and Lichterfelde.
The outage led to an interrupted power supply, heating and internet failures, and made it more difficult to supply care homes and critical facilities (Morgenpost). The repair work took several days, so many households had to manage without energy for hours (FT).
The challenge: power supply is vulnerable
Incidents like this show that even in modern cities like Berlin, the central power supply can suddenly fail. For households, businesses and public institutions, this means:
- No heating or hot water
- No lighting and limited security systems
- Interrupted communication and internet connections
- Production, logistics and cold chains at a standstill
The question is therefore no longer whether, but when a power outage will occur.
Battery storage: the solution for backup power and self-sufficiency
Battery storage systems (BESS) are energy storage systems installed on site that, in an emergency, supply power immediately, independently of the central grid. They enable:
- Backup power supply: Critical devices and heating systems stay on
- Island operation: The building or site is self-sufficient
- Automatic switchover: Immediate power flow in the event of a grid outage
- Predictable security of supply: Hours to days without grid power
In this way, battery storage systems protect lives, comfort and business operations and provide greater independence from unpredictable grid outages.
Battery storage – more than just backup power
BESS offer far more benefits than just supplying power in an emergency. They are a versatile energy tool for households, businesses and municipalities:
- Self-consumption optimisation: Solar power can be stored and used as needed to reduce electricity costs.
- Load management and peak shaving: Commercial and industrial customers can avoid expensive peak loads.
- Integration of renewable energy: Surplus solar and wind power is used efficiently.
- Environmentally friendly energy supply: Reduced grid import and greater use of self-generated energy support climate protection.
- Flexibility and scalability: Systems adapt dynamically to consumption and generation and can be expanded.
For whom battery storage systems are particularly relevant
Private households
- Supplying heating, lighting and household appliances
- Backup power for routers, communication devices and fridges
- Combination with PV systems increases independence from the grid
Commerce & industry
- Safeguarding production processes and cold chains
- Protecting sensitive IT and point-of-sale systems
- Reducing revenue losses through backup power operation
- Load management and peak shaving to optimise costs
Municipalities & housing sector
- Supplying entire residential neighbourhoods or public buildings
- Stabilising critical infrastructure
- Reducing dependence on the public grid
Our products: the right solution for every situation
To deliver all these benefits, we offer three specially designed battery storage solutions:
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LBM-5220S – Compact home battery storage system
Ideal for private households, backup-capable and PV-compatible. Keeps lighting, heating, refrigeration appliances and communication devices running, even during a grid outage. -
HV140 – Commercial and mid-size storage system
With a capacity of 140 kWh, perfect for office buildings, workshops or small production facilities. Supports load management and peak shaving, and ensures stable operations. -
THOR215 – Large-scale containerised solution
215 kWh capacity, modularly expandable and suitable for industry, neighbourhoods or municipal facilities. THOR215 provides backup power and peak shaving and maximises the integration of renewable energy.
All three products are modular, safe and intelligently monitored. They deliver energy whenever it is needed, whether in an emergency or in normal day-to-day operation.
Conclusion
The power outage in Berlin shows: resilience in the energy supply is not a luxury, but a necessity. Battery storage systems offer:
- Backup power supply for households, businesses and municipalities
- Self-sufficiency and protection against outages
- Economic benefits through intelligent energy management
- Efficient use of renewable energy and cost optimisation
Now is the right time to invest in battery storage systems such as the LBM-5220S, HV140 or THOR215 – for security, independence and sustainable energy.
