Light & Power
How to Calculate Your Power Needs for an Emergency
How many watt-hours do you really need for an emergency? Here's how to calculate your power needs yourself, step by step.
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Light & Power
Handle power outages without chaos: choosing, storing, and using flashlights, power banks, power stations, solar panels, and batteries.
Light & Power
Plug-In Solar During a Power Outage: What Really Works
Can a plug-in solar system help during a power outage? A realistic look at battery storage with backup power function and its limits.
Light & Power
Home Backup Generator: Worth It, Legal, and Safe?
Home backup generator: power output, costs, safety, and registration – what you need to know before you buy.
Light & Power
What Stops Working in a Power Outage? Heating, Water, Phone, Checkout
An overview of what stops working during a power outage – from heating and the cell network to card payments at the checkout.
Light & Power
Berlin Blackout 2026: What the Power Outage Teaches Us
The 2026 blackout in Berlin shut down parts of the city for days. Here's what the outage reveals about preparedness, heating, and communication at home.
Light & Power
How to Store Batteries and Rechargeable Batteries Properly
A battery stockpile is only useful if it still works when you need it. Here's how to store batteries and rechargeables safely, so they last longer and stay within reach, and how to dispose of them properly.
Light & Power
Solar Panel for Beginners
Power from the sun, even when the grid goes down: what a portable solar panel can realistically deliver, how to set it up properly, and what to look for when buying.
Light & Power
How to Choose a Flashlight and Headlamp
Lumens, beam distance, IPX rating, rechargeable or battery-powered? Here's how to find lights that work reliably during a power outage – and don't just look impressive on the packaging.
Light & Power
Power Station or Power Bank: Which One Do You Need?
Charge a phone or run a refrigerator? We explain watt-hours, power output and battery types – and how to calculate which power storage really fits your needs.
Light & Power
Power Outage: How to Handle the First 24 Hours
Suddenly everything goes dark. With a clear plan for the first hour, the first evening and the first night, you stay calm and keep track of the situation.