GoKawiilYour next group birthday gifts should be home batteries.
Most birthday gifts are forgotten within a year. Batteries save your friends money every day and keep essential devices running when the power goes out.
A 5 kWh battery costs about €1,600. That is expensive for one person and easy for a group:
eight people contribute €200 each;
sixteen people contribute €100 each;
thirty-two people contribute €50 each.
Create a battery birthday club. Buy each friend a battery on their birthday until everyone has one.
The idea is simple: buy electricity when it is cheap, store it, and use it when it is expensive. Automatic price optimization reads tomorrow’s prices and handles the schedule for you.
The EcoFlow STREAM 5000 is one current example: about €1,600 for 5 kWh of storage and up to 3 kW of output.
Germany and Spain are good places to do this. In the second half of 2025, the average household electricity price was €0.3869/kWh in Germany and €0.2669/kWh in Spain, including taxes. Those averages hide large changes during each day.
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