June 16, 2025, 10:40 am | Read time: 3 minutes
A power outage can cripple an entire home. However, those who are prepared can continue to operate essential devices or even power the whole house. Learn about the available options and what you must pay attention to here.
In Germany, power outages are relatively rare. According to figures from the Federal Network Agency in 2022, they last on average only about 12.2 minutes per year. However, in an emergency, having your own power supply can be crucial. Those who want to be on the safe side can generate or store their own electricity in case of an emergency. However, the larger the scope of self-sufficiency, the more expensive and complicated it becomes.
Minimal Solution: Small Energy Storage for Small Devices
A simple and cost-effective option is to have small energy storage devices like power banks or solar chargers on hand. These can power essential small devices such as smartphones, tablets, or battery-powered flashlights–provided the batteries are charged beforehand. However, this solution is not sufficient for larger household appliances.
Related: These Items You Should Have at Home for Blackout Preparedness
Middle Ground: Generating Power with Portable Generators or Solar Panels
Specialty stores offer a wide range of mobile power sources–from small generators to balcony power plants with integrated battery storage. The Federal Office of Civil Protection and Disaster Assistance (BBK) recommends considering in advance which devices you want to operate. This is the only way to ensure that no overload occurs in an emergency.
Particularly power-intensive devices like electric kettles quickly require between 1,500 and 2,000 watts. If you opt for a generator-powered electricity generator with fuel, additional safety rules must be observed:
- Generators should never be operated indoors, as the resulting exhaust gases pose a risk of suffocation.
- There are legal maximum quantities for storing fuels: Currently, up to 10 liters of gasoline or 20 liters of diesel may be stored in basements. According to the BBK, gas cylinders should not be stored in the basement.
- If you want to power sensitive electronics like computers, make sure the generator provides stable voltage and frequency.
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Maximum Solution: Completely Independent Home Supply
Those aiming for comprehensive autonomy can also supply their entire home network independently with electricity. However, this requires professional planning and installation. The Federal Office of Civil Protection and Disaster Assistance (BBK) recommends having a professional company conduct the consultation and installation, as only they are authorized to perform work on the home installation. Coordination with the responsible network operator is also necessary.
Whether battery storage, an appropriately sized photovoltaic system, or a powerful generator is used depends on local conditions and individual requirements. In any case, it is important to plan early which consumers should be operated in an emergency so that the capacity of the system is sufficient.
With material from dpa