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A fixed home battery at 471 euros per kilowatt-hour, and the most expensive plug-in battery at around 470. Storage is not what makes the difference. This article walks through the order: what you ask of the battery, how it connects to your house, who controls it, and only then how big. With the measured curve of one house, and what that curve does not say.
150 watt-hours and 13,500. Both store electricity at home, with a factor of ninety between them. In between sit six categories, and each one exists because the previous one runs into a wall. All six written out: what each category adds, where it stops, what the kilowatt-hours cost, and which connection it needs.
