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by sir_bearington
1925 days ago
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> That's not actually the key figure of merit, the problem isn't how long stored sources can be used but peak output. That is exactly the problem. Yes, output matter, too, but capacity is the main figure people are interested in. If storage system A can output 1.5 GW but only for 1 hour, and system B can output 1.5 GW but for 10 hours then these are very different systems. > All of it for longer than that And how long is it? Basically we're trying to find the area of rectangle. You're providing the height, but staying conspicuously mum about the width. > The concern is the depth of the trough that storage can handle, you need breadth too, so a substantial level of that comes inherently with depth, and the main concern is short-term variation. No, the concern is both depth and breadth. It's easy to build a battery system that puts out a lot of energy for a short period of time. It's hard to build a battery system that puts out a lot of energy for 12 hours. |
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