4. Calculation of the N – 1 formula using demand-side measures

N – 1% = (EP_(m) + P_(m) + S_(m) + LNG_(m) – I_(m) / D_(max) – D_(eff)) × 100, N – 1 ≥ 100 % ‘D_(eff)’ means the part (in mcm/d) of D_(max) that in case of a supply disruption can be sufficiently and timely covered with market-based demand-side measures in accordance with Article 5(1)(b) and Article 6(2).

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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.