N – 1 formula
the identification of the single largest gas infrastructure of common interest for the risk group; the calculation of the N – 1 formula at the level of the risk group; a description of the values used for all elements in the N – 1 formula, including intermediate figures used for the calculation (e.g. for EP_(m) indicate the capacity of all entry points considered under this parameter); an indication of the methodologies and assumptions used, if any, for the calculation of parameters in the N – 1 formula (e.g. D_(max)) (use annexes for detailed explanations).
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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.