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19 October 2021

STOR market: Is value about to drop by 60%?

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Modo Energy

STOR market: Is value about to drop by 60%?

The new day-ahead STOR auctions launched in April 2021, using a ‘pay-as-clear’ method. This means that National Grid ESO pays the price of the highest accepted bid for every megawatt of capacity it procures. Interestingly, we’ve seen wild day-to-day fluctuations in clearing prices, with swings as large as £5.55/MW/h from one day to the next. But what’s been behind these huge discrepancies?

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