- ancillary services
means ancillary services as defined in point 14 of Article 2 of Directive 2009/73/EC;
- balancing stock
means non-liquefied natural gas which is:
- Calculated area
means a geographical area for which the N – 1 formula is calculated, as determined by the competent authority.
- competent authority
means a national governmental authority or a national regulatory authority designated by a Member State to ensure the implementation of the measures provided for in this Regulation;
- customer
means customer as defined in point 24 of Article 2 of Directive 2009/73/EC;
- Deff
means the part (in mcm/d) of Dmax that in the case of a disruption of gas supply can be sufficiently and timely covered with market-based demand-side measures in accordance with point (c) of Article 9(1) and Article 5(2).
- deliver-or-pay provision
means a contractual provision which obliges the seller to pay a contractual fine in the case of a non-delivery of gas.
- distribution
means distribution as defined in point 5 of Article 2 of Directive 2009/73/EC;
- distribution system operator
means distribution system operator as defined in point 6 of Article 2 of Directive 2009/73/EC;
- Dmax
means the total daily gas demand (in mcm/d) of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years.
- emergency supply corridors
means Union gas supply routes that help Member States to better mitigate the effects of potential disruption of supply or infrastructure;
- essential social service
means a service related to healthcare, essential social care, emergency, security, education or public administration;
- filling target
means a binding target for the filling level of the aggregated capacity of the underground gas storage facilities;
- filling trajectory
means a series of indicative intermediate targets for the underground gas storage facilities of each Member State, representing the filling plan of that Member State, set in accordance with Article 6a(7);
- firm capacity
means firm capacity as defined in point 16 of Article 2 of Regulation (EC) No 715/2009;
- gas
means natural gas as defined in Article 2, point (1), of Directive (EU) 2024/1788;
- gas supply contract
means gas supply contract as defined in point 34 of Article 2 of Directive 2009/73/EC;
- household customer
means household customer as defined in point 25 of Article 2 of Directive 2009/73/EC;
- Im
means the technical capacity of the single largest gas infrastructure (in mcm/d) with the highest capacity to supply the calculated area.
- interconnector
means interconnector as defined in point 17 of Article 2 of Directive 2009/73/EC;
- interruptible capacity
means interruptible capacity as defined in point 13 of Article 2 of Regulation (EC) No 715/2009;
- national regulatory authority
means a national regulatory authority designated in accordance with Article 39(1) of Directive 2009/73/EC;
- natural gas undertaking
means natural gas undertaking as defined in point 1 of Article 2 of Directive 2009/73/EC;
- protected customer
means a household customer who is connected to a gas distribution network and, in addition, where the Member State concerned so decides, may also mean one or more of the following, provided that enterprises or services as referred to in points (a) and (b) do not, jointly, represent more than 20 % of the total annual final gas consumption in that Member State:
- security
means security as defined in point 32 of Article 2 of Directive 2009/73/EC;
- solidarity protected customer
means a household customer who is connected to a gas distribution network, and, in addition, may include one or both of the following:
- storage capacity
means storage capacity as defined in point 28 of Article 2 of Regulation (EC) No 715/2009;
- storage facility
means storage facility as defined in point 9 of Article 2 of Directive 2009/73/EC;
- strategic storage
means underground storage or part of underground storage of non-liquefied natural gas which is purchased, managed and stored by transmission systems operators, an entity designated by the Member States or an undertaking, and which may be released only after prior notification or public authority authorisation for release, and is generally released in the case of:
- system
means system as defined in point 13 of Article 2 of Directive 2009/73/EC;
- system user
means system user as defined in point 23 of Article 2 of Directive 2009/73/EC;
- take-or-pay provision
means a contractual provision which obliges the buyer to take delivery of, or alternatively pay for, a specified minimum quantity of gas within a given period, regardless of whether the gas is actually received;
- technical capacity
means technical capacity as defined in point 18 of Article 2 of Regulation (EC) No 715/2009;
- the most affected Member State
shall mean a Member State where a contract party of a given contract has the most of its sales of gas or customers located.
- transmission
means transmission as defined in point 3 of Article 2 of Directive 2009/73/EC;
- transmission system operator
means transmission system operator as defined in point 4 of Article 2 of Directive 2009/73/EC;
- underground gas storage facility
means a storage facility as defined in Article 2, point (9), of Directive 2009/73/EC that is used for the stocking of natural gas, including balancing stock, and that is connected to a transmission or distribution system, excluding above-ground spherical or linepack storage;