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Arbitrage isn't as profitable as the other revenue streams in energy storage and, quite frankly, isn't really profitable or attractive. Arbitrage doesn't add any true value to the world - it just lines your own pocket. Not to mention that developing software to monetize the different revenue stacks is demanding and fickle. So many different integrations and different market requirements and dimensions. There's a good reason they aren't doing it - too much work with minimal upside and that whole Tesla/Elon has way too much on their plate thing.

Arbitrage does provide value but indirectly and abstractly usually by boosting availability and allowing for some efficiency boosts. The power role is one of the times when it had the most direct utility.

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