
Article 1 
This Regulation establishes provisions aiming to safeguard the security of gas supply in the United Kingdom by ensuring the proper and continuous functioning of the market in natural gas (‘gas’) in the United Kingdom, by allowing for exceptional measures to be implemented when the market can no longer deliver the gas supplies required ... and by providing for the clear definition and attribution of responsibilities among natural gas undertakings, the Secretary of State, the Northern Ireland department and the regulatory authority regarding both preventive action and the reaction to concrete disruptions of gas supply. This Regulation also establishes transparent mechanisms concerning ... the coordination of planning for, and response to, emergencies ....
Article 2 

(1) For the purposes of this Regulation, the following definitions apply:
((A1)) ‘the Gas Regulation’ means Regulation (EC) No 715/2009 of the European Parliament and of the Council on conditions for access to natural gas transmission networks;
((A2)) ‘the Northern Ireland department’ means the Department for the Economy;
((1)) ‘security’ means security as defined in point 32 of Article 2 of Directive 2009/73/EC;
((2)) ...
((3)) ‘household customer’ means household customer as defined in point 25 of Article 2 of Directive 2009/73/EC;
((4)) ‘essential social service’ means a service related to healthcare, essential social care, emergency, security, education or public administration;
((5)) ‘protected customer’ means a household customer who is connected to a gas distribution network and, in addition, where the Secretary of State 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 the United Kingdom:

((a)) a small or medium-sized enterprise, provided that it is connected to a gas distribution network;
((b)) an essential social service, provided that it is connected to a gas distribution or transmission network;
((c)) a district heating installation to the extent that it delivers heating to household customers, small or medium-sized enterprises, or essential social services, provided that such installation is not able to switch to other fuels than gas;
((6)) ...
((7)) ‘competent authority’ , in relation to a member State, 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 as it applies in EU law;
((8)) ‘national regulatory authority’ , in relation to a member State, means a national regulatory authority designated in accordance with Article 39(1) of Directive 2009/73/EC;
((8A)) ‘regulatory authority’—
(a) in relation to Great Britain, means the Gas and Electricity Markets Authority; and
(b) in relation to Northern Ireland, means the Northern Ireland Authority for Utility Regulation.
((9)) ...
((10)) ‘gas supply contract’ means gas supply contract as defined in point 34 of Article 2 of Directive 2009/73/EC;
((11)) ...
((12)) ...
((13)) ...
((14)) ...
((15)) ...
((16)) ...
((17)) ...
((18)) ...
((19)) ...
((20)) ...
((21)) ...
((22)) ...
((23)) ...
((24)) ...
((25)) ...
((26)) ...
(2. For the purposes of this Regulation, the following expressions have the meanings given in the Gas Regulation—
 ‘ancillary services’;
 ‘customer’;
 ‘distribution’;
 ‘distribution system operator’;
 ‘firm capacity’;
 ‘interconnector’;
 ‘interruptible capacity’;
 ‘LNG facility’;
 ‘LNG facility capacity’;
 ‘natural gas undertaking’;
 ‘storage capacity’;
 ‘system’;
 ‘system user’;
 ‘technical capacity’;
 ‘transmission’;
 ‘transmission system operator’.
Article 3 

1. The security of gas supply shall be the shared responsibility of natural gas undertakings , the Secretary of State, the Northern Ireland department and the regulatory authority within their respective areas of activity and competence.
2. ... The Secretary of State may delegate specific tasks set out in this Regulation to other bodies , including the Northern Ireland department. Where the Secretary of State delegates the task of declaring any of the crisis levels referred to in Article 11(1), the Secretary of State shall do so only to a public authority, a transmission system operator or a distribution system operator. Delegated tasks shall be performed under the supervision of the Secretary of State and shall be specified in the preventive action plan and in the emergency plan.
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4. When implementing the measures provided for in this Regulation, the Secretary of State shall establish the roles and responsibilities of the different actors concerned in such a way as to ensure an approach which involves... the relevant natural gas undertakings, electricity undertakings where appropriate, and industry ....
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Article 4 
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Article 5 

1. The Secretary of State shall ensure that the necessary measures are taken so that in the event of a disruption of the single largest gas infrastructure, the technical capacity of the remaining infrastructure, determined in accordance with the N – 1 formula as set out in point 2 of Annex II, is able, without prejudice to paragraph 2 of this Article, to satisfy total gas demand of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years. This shall be done taking into account gas consumption trends, the long-term impact of energy efficiency measures and the utilisation rates of existing infrastructure.The obligation set out in the first subparagraph of this paragraph shall be without prejudice to the responsibility of the transmission system operators to make the corresponding investments and to the relevant obligations of transmission system operators.For the purposes of the preceding subparagraph, a  “relevant obligation” is—
(a) an obligation laid down in the Gas Regulation;
(b) an obligation imposed before  IP completion day  for the purpose of implementing Directive 2009/73/EC (including such an obligation as modified on or after IP completion day); or
(c) an obligation imposed on or after IP completion day which is the same as or similar to an obligation which could have been imposed before IP completion day for the purpose of implementing Directive 2009/73/EC.
2. The obligation to ensure that the remaining infrastructure has the technical capacity to satisfy total gas demand, as referred to in paragraph 1 of this Article, shall also be considered to be fulfilled where the Secretary of State demonstrates in the preventive action plan that a disruption of gas supply may be sufficiently compensated for, in a timely manner, by appropriate market-based demand-side measures. For that purpose, the N – 1 formula shall be calculated as set out in point 4 of Annex II.
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4. The transmission system operators must endeavour to enable permanent physical capacity to transport gas in both directions (‘bi-directional capacity’) on all interconnections between the United Kingdom and member States, except:
(a) in the case of connections to production facilities, to LNG facilities and to distribution networks; or
(b) where an exemption from that obligation has been granted, after detailed assessment and after consulting ... in accordance with Annex III.For the procedure to enable or enhance bi-directional capacity on an interconnection or to obtain or prolong an exemption from that obligation Annex III shall apply. The Secretary of State shall make public the list of exemptions and keep it updated.
5. A proposal for enabling or enhancing bi-directional capacity or a request for granting or prolongation of an exemption shall include a cost-benefit analysis ... based on the following elements:
(a) an assessment of market demand;
(b) projections for demand and supply;
(c) the possible economic impact on existing infrastructure;
(d) a feasibility study;
(e) the costs of bi-directional capacity including the necessary reinforcement of the transmission system; and
(f) the benefits to the security of gas supply taking into account the possible contribution of bi-directional capacity to meeting the infrastructure standard set out in this Article.
6. The regulatory authority shall take into account the efficiently incurred costs of fulfilling the obligation set out in paragraph 1 of this Article and the costs of enabling bi-directional capacity so as to grant appropriate incentives when fixing or approving, in a transparent and detailed manner, the tariffs of transmission system operators or the methodologies used to calculate them.
7. In so far as an investment for enabling or enhancing bi-directional capacity is not required by the market but is considered to be necessary for security of gas supply purposes and where that investment incurs costs in the United Kingdom and a member State or in the United Kingdom for the benefit of a member State, the regulatory authority must endeavour to take a coordinated decision on cost allocation with the national regulatory authorities of the member States concerned before any investment decision is taken.The cost allocation must take into account the proportion of the benefits of the infrastructure investments for the increase of the security of gas supply in the United Kingdom as well as investments already made in the infrastructure in question.The cost allocation must not unduly distort competition and the effective functioning of the market in the United Kingdom and must seek to avoid any undue distortive effect on the market.
8. The Secretary of State shall ensure that any new transmission infrastructure contributes to the security of gas supply through the development of a well-connected network, including, where appropriate, by means of a sufficient number of cross-border entry and exit points relative to market demand and the risks identified.The Secretary of State shall assess in the risk assessment whether, with an integrated perspective on gas and electricity systems, internal bottlenecks exist and national entry capacity and infrastructure, in particular transmission networks, are capable of adapting the national and cross-border gas flows to the scenario of disruption of the single largest gas infrastructure at national level ....
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Article 6 

1. The Secretary of State shall require natural gas undertakings to take measures to ensure the gas supply to protected customers in each of the following cases:
(a) extreme temperatures during a 7-day peak period occurring with a statistical probability of once in 20 years;
(b) any period of 30 days of exceptionally high gas demand, occurring with a statistical probability of once in 20 years;
(c) for a period of 30 days in the case of disruption of the single largest gas infrastructure under average winter conditions....The Secretary of State shall identify the natural gas undertakings referred to in the first subparagraph of this paragraph and shall specify them in the preventive action plan.Any new non-market-based measures envisaged to ensure the gas supply standard shall comply with the procedure established in Article 9(4) and (5).Compliance with the obligation laid down in the first subparagraph may be through the implementation of energy efficiency measures or by replacing the gas with a different source of energy, inter alia, renewable energy sources, to the extent that the same level of protection is achieved.
2. Any increased gas supply standard beyond the 30-day period referred to in points (b) and (c) of paragraph 1 or any additional obligation imposed for reasons of security of gas supply shall be based on the risk assessment, shall be reflected in the preventive action plan and shall:
(a) comply with Article 8(1);
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(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....Any new non-market-based measure pursuant to the first subparagraph of this paragraph, adopted on or after 1 November 2017, shall comply with the procedure established in Article 9(4) and (5).
3. After the expiry of the periods laid down by the Secretary of State in accordance with paragraphs 1 and 2, or under more severe conditions than those laid down in paragraph 1, the Secretary of State and natural gas undertakings shall endeavour to maintain, as far as possible, the gas supply, in particular to protected customers.
4. The obligations imposed on natural gas undertakings for the fulfilment of the gas supply standards laid down in this Article shall be non-discriminatory and shall not impose an undue burden on those undertakings.
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6. The Secretary of State shall ensure that conditions for supplies to protected customers are established without prejudice to the proper functioning of the energy market in the United Kingdom and at a price respecting the market value of the supplies.
Article 7 

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3. The Secretary of State shall make a national risk assessment (‘national risk assessment’) of all relevant risks affecting the security of gas supply in the United Kingdom. ...
4. The risk assessment referred to in paragraph 3 of this Article shall be carried out, as relevant, by:
(a) using the standards specified in Articles 5 and 6. The risk assessment shall describe the calculation of the N – 1 formula at national level .... The risk assessment shall also include the assumptions used... and the data necessary for such calculation. The calculation of the N – 1 formula at national level shall be accompanied by a simulation of disruption of the single largest gas infrastructure using hydraulic modelling for the national territory as well as by a calculation of the N – 1 formula considering the level of gas in storages at 30 % and 100 % of the maximum working volume;
(b) taking into account all relevant national and transnational circumstances, in particular market size, network configuration, actual flows, including outflows from the transmission systems of Great Britain and Northern Ireland, the possibility of physical gas flows in both directions including the potential need for consequent reinforcement of the transmission system, the presence of production and storage and the role of gas in the energy mixes, in particular with respect to district heating and electricity generation and for the operation of industries, and safety and gas quality considerations;
(c) running various scenarios of exceptionally high demand for gas and disruption of gas supply, taking into account the history, probability, season, frequency and duration of their occurrence and assessing their likely consequences, such as:
((i)) disruption of the infrastructure relevant to the security of gas supply, in particular transmission infrastructure, storages or LNG terminals, including the largest gas infrastructure identified for the calculation of N – 1 formula; and
((ii)) disruption of supplies from  outside the United Kingdom, as well as, where appropriate, geopolitical risks;
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(e) taking into account risks relating to the control of infrastructure relevant to the security of gas supply to the extent that they may involve, inter alia, risks of underinvestment, undermining diversification, misuse of existing infrastructure or an infringement of  assimilated  law;
(f) taking into account the maximal interconnection capacity of each border entry and exit point and various filling levels for storage.
5. The national risk assessment shall be prepared in accordance with the ... template set out in Annex ... V. If necessary, the Secretary of State may include additional information. ...
(5A. The Secretary of State may, by regulations, amend the template set out in Annex V in order to reflect the experience gained in the application of this Regulation and to reduce administrative burdens.
6. Natural gas undertakings , the holder of a licence under section 7AA of the Gas Act 1986, industrial gas customers, the relevant organisations representing the interests of household and industrial gas customers , the Northern Ireland department and the regulatory authority, must cooperate with the Secretary of State and provide the Secretary of State upon request with all necessary information for the national risk assessment.
7. ... The risk assessments must be updated by 1st October 2022 and every four years thereafter unless circumstances warrant more frequent updates. The risk assessments shall take account of progress made in investments needed to cope with the infrastructure standard defined in Article 5 and ... difficulties encountered in the implementation of new alternative solutions. They shall also build on the experience acquired through the simulation of the emergency plans contained in Article 10(3).
Article 8 

1. The measures to ensure the security of gas supply contained in a preventive action plan and an emergency plan shall be clearly defined, transparent, proportionate, non-discriminatory and verifiable, shall not unduly distort competition in the United Kingdom or the effective functioning of the gas market in the United Kingdom.
2. The Secretary of State must, after consulting the natural gas undertakings,  the holder of a licence under section 7AA of the Gas Act 1986, the relevant organisations representing the interests of household and industrial gas customers, including electricity producers, electricity transmission system operators, and the regulatory authority establish:
(a) a preventive action plan containing the measures needed to remove or mitigate the risks identified, including the effects of energy efficiency and demand-side measures in the ... national risk assessments and in accordance with Article 9;
(b) an emergency plan containing the measures to be taken to remove or mitigate the impact of a disruption of gas supply in accordance with Article 10.
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5. The preventive action plan and the emergency plan shall be developed in accordance with the templates contained in Annexes VI and VII. ...
(5A. The Secretary of State may, by regulations, amend the templates set out in Annexes VI and VII in order to reflect the experience gained in the application of this Regulation and to reduce administrative burdens.
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7. The preventive action plans and the emergency plans shall be made public ... by 1 March 2019. ......
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11. The confidentiality of commercially sensitive information shall be preserved.
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Article 9 

1. The preventive action plan shall contain:
(a) the results of the risk assessment and a summary of the scenarios considered, as referred to in point (c) of Article 7(4);
(b) the definition of protected customers, the annual gas consumption volumes of the protected customers and the percentage that those consumption volumes represent of the total annual final gas consumption in the United Kingdom;
(ba) where the definition of protected customers incudes the categories referred to in point (5)(a) or (b) of Article 2, the gas consumption volumes corresponding to customers belonging to those categories and the percentage that each of those groups of customers represents in total final gas consumption;
(c) the measures, volumes and capacities needed to fulfil the infrastructure and gas supply standards laid down in Articles 5 and 6, including, where applicable, the extent to which demand-side measures can sufficiently compensate, in a timely manner, for a disruption of gas supply as referred to in Article 5(2), ... the necessary gas volumes per category of protected customers and per scenario as referred to in Article 6(1), and any increased gas supply standard ... and a description of a mechanism to reduce temporarily any increased gas supply standard ...;
(d) obligations imposed on natural gas undertakings, electricity undertakings where appropriate, and other relevant bodies likely to have an impact on the security of gas supply, such as obligations for the safe operation of the gas system;
(e) other preventive measures designed to address the risks identified in the risk assessment, such as those relating to the need to enhance interconnections between the United Kingdom and neighbouring relevant States, to further improve energy efficiency, to reduce gas demand and the possibility to diversify gas routes and sources of gas supply and the regional utilisation of existing storage and LNG capacities, if appropriate, in order to maintain gas supply to all customers as far as possible;
(f) information on the economic impact, effectiveness and efficiency of the measures contained in the plan, including the obligations referred to in point (k);
(g) a description of the effects of the measures contained in the plan on the functioning of the energy market in the United Kingdom, including the obligations referred to in point (k);
(h) a description of the impact of the measures on the environment and on customers;
(i) the mechanisms to be used for endeavouring to cooperate with member States, including the mechanisms for preparing and implementing preventive action plans and emergency plans;
(j) information on existing and future interconnections and infrastructure, including those providing access to the market in member States, cross-border flows, cross-border access to storage and LNG facilities and the bi-directional capacity, in particular in the event of an emergency;
(k) information on all public service obligations that relate to the security of gas supply.Critical information relating to points (a), (c) and (d) of the first subparagraph which, if revealed, could endanger the security of gas supply, may be excluded.For the purposes of point (e) of the first subparagraph,  “neighbouring relevant States” means Belgium, Denmark, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain and Sweden.
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3. The preventive action plan shall be based primarily on market-based measures and shall not put an undue burden on natural gas undertakings, or negatively impact on the functioning of the market in gas in the United Kingdom.
4. The Secretary of State shall ensure that all preventive non-market-based measures, such as those referred to in Annex VIII, adopted on or after 1 November 2017, irrespective of whether they are part of the preventive action plan or adopted subsequently, comply with the criteria laid down in the first subparagraph of Article 6(2).
5. The Secretary of State shall make public any measure referred to in paragraph 4 which has not yet been included in the preventive action plan....
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11. The preventive action plan shall be updated every four years after 1 March 2019 or more frequently if the circumstances so warrant .... The updated plan shall reflect the updated risk assessment and the results of the tests carried out in accordance with Article 10(3). Article 8 shall apply to the updated plan.
Article 10 

1. The emergency plan shall:
(a) build upon the crisis levels referred to in Article 11(1);
(b) define the role and responsibilities of natural gas undertakings, transmission system operators for electricity if relevant and of industrial gas customers including relevant electricity producers, taking account of the different extent to which they are affected in the event of a disruption of gas supply, and their interaction with the Secretary of State and where appropriate with the regulatory authority at each of the crisis levels referred to in Article 11(1);
(c) define the role and responsibilities of the Secretary of State and of the other bodies to which tasks have been delegated as referred to in Article 3(2) at each of the crisis levels referred to in Article 11(1);
(d) ensure that natural gas undertakings and industrial gas customers including relevant electricity producers are given sufficient opportunity to respond to the crisis levels referred to in Article 11(1);
(e) identify, if appropriate, the measures and actions to be taken to mitigate the potential impact of a disruption of gas supply on district heating and the supply of electricity generated from gas, including through an integrated view of energy systems operations across electricity and gas if relevant;
(f) establish detailed procedures and measures to be followed for the crisis levels referred to in Article 11(1), including the corresponding schemes on information flows;
(g) designate a crisis manager and define its role;
(h) identify the contribution of market-based measures for coping with the situation at alert level and mitigating the situation at emergency level;
(i) identify the contribution of non-market-based measures planned or to be implemented for the emergency level, and assess the degree to which the use of such non-market-based measures is necessary to cope with a crisis. The effects of the non-market-based measures shall be assessed and procedures for their implementation defined. Non-market-based measures are to be used only when market-based mechanisms alone can no longer ensure supplies, in particular to protected customers...;
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(k) detail the reporting obligations imposed on natural gas undertakings and, where appropriate, electricity undertakings at alert and emergency levels;
(l) describe the technical or legal arrangements in place to prevent undue gas consumption of customers who are connected to a gas distribution or transmission network but not protected customers;
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(o) establish a list of predefined actions to make gas available in the event of an emergency, including commercial agreements between the parties involved in such actions and the compensation mechanisms for natural gas undertakings where appropriate, taking due account of the confidentiality of sensitive data. Such actions may involve cross-border agreements between the United Kingdom and member States, or between natural gas undertakings.In order to prevent undue gas consumption during an emergency, as referred to in point (l) of the first subparagraph the Secretary of State shall inform customers who are not protected customers that they are required to cease or reduce their gas consumption without creating technically unsafe situations.
2. The emergency plan shall be updated every four years after 1 March 2019 or more frequently if circumstances so warrant .... The updated plan shall reflect the updated risk assessment and the results of the tests carried out in accordance with paragraph 3 of this Article. Article 8(5), (7) and (11) apply to the updated plan.
3. The measures, actions and procedures contained in the emergency plan shall be tested at least once between its four-year updates referred to in paragraph 2. In order to test the emergency plan, the Secretary of State shall simulate high and medium impact scenarios and responses in real time in accordance with that emergency plan. ...
4. The emergency plan shall ensure that cross-border access to infrastructure in accordance with Regulation (EC) No 715/2009 is maintained as far as technically and safely possible in the event of an emergency and shall not introduce any measure unduly restricting the flow of gas across borders.
Article 11 

1. There shall be the following three crisis levels:
(a) early warning level (‘early warning’): where there is concrete, serious and reliable information that an event which is likely to result in significant deterioration of the gas supply situation may occur and is likely to lead to the alert or the emergency level being triggered; the early warning level may be activated by an early warning mechanism;
(b) alert level (‘alert’): where a disruption of gas supply or exceptionally high gas demand which results in significant deterioration of the gas supply situation occurs but the market is still able to manage that disruption or demand without the need to resort to non-market-based measures;
(c) emergency level (‘emergency’): where there is exceptionally high gas demand, significant disruption of gas supply or other significant deterioration of the gas supply situation and all relevant market-based measures have been implemented but the gas supply is insufficient to meet the remaining gas demand so that non-market-based measures have to be additionally introduced with a view, in particular, to safeguarding gas supplies to protected customers in accordance with Article 6.
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4. When an emergency is declared the Secretary of State must follow the pre-defined action as set out in the emergency plan. In duly justified exceptional circumstances, the Secretary of State may take action deviating from the emergency plan.
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6. The Secretary of State shall ensure that:
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(c) cross-border access to infrastructure in accordance with Regulation (EC) No 715/2009 is maintained as far as technically and safely possible, in accordance with the emergency plan.
7. During an emergency and on reasonable grounds, upon a request of the relevant electricity or gas transmission system operator the Secretary of State may decide to prioritise the gas supply to certain critical gas-fired power plants over the gas supply to certain categories of protected customers, if the lack of gas supply to such critical gas-fired power plants either:
(a) could result in severe damage in the functioning of the electricity system; or
(b) would hamper the production and/or transportation of gas.The Secretary of State shall base any such measure on the risk assessment....
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Article 12 
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Article 13 
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Article 14 

1. Where one of the crisis levels referred to in Article 11(1) has been declared, the natural gas undertakings concerned shall make available, on a daily basis, in particular the following information to the Secretary of State:
(a) the daily gas demand and gas supply forecasts for the following three days, in million cubic metres per day (mcm/d);
(b) the daily flow of gas at all cross-border entry and exit points as well as at all points connecting a production facility, a storage facility or an LNG terminal to the network, in million cubic metres per day (mcm/d);
(c) the period, expressed in days, for which it is expected that supply of gas to protected customers can be ensured.
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4. In duly justified circumstances irrespective of a declaration of an emergency, the Secretary of State may require natural gas undertakings to provide the information referred to in paragraph 1 or additional information necessary to assess the overall situation of the gas supply in the United Kingdom, including contractual information, other than price information. ...
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6. In order for the Secretary of State to assess the security of gas supply situation ... each natural gas undertaking shall notify:
(a) to the Secretary of State the following details of gas supply contracts with a cross-border dimension and a duration of more than one year which it has concluded to procure gas:
((i)) contract duration;
((ii)) yearly contracted volumes;
((iii)) contracted maximum daily volumes in the event of an alert or emergency;
((iv)) contracted delivery points;
((v)) minimum daily and monthly gas volumes;
((vi)) conditions for the suspension of gas deliveries.
((vii)) an indication whether the contract individually or cumulatively with its contracts with the same supplier or its affiliates is equivalent to or exceeds the threshold of 28 % as referred to in point (b) of paragraph 6 in the United Kingdom.
(b) to the Secretary of State immediately after their conclusion or modification its gas supply contracts with a duration of more than one year, concluded or modified on or after 1 November 2017 that individually or cumulatively with its contracts with the same supplier or its affiliates is equivalent to 28 % or more of yearly gas consumption in the United Kingdom to be calculated on the basis of the most recent available data. In addition, by 2 November 2018 natural gas undertakings must notify the Secretary of State of all existing contracts fulfilling the same conditions. The notification obligation shall not cover price information and shall not apply to the modifications related only to the gas price. The notification obligation shall also apply to all commercial agreements that are relevant for the execution of the gas supply contract excluding price information.... In the event of new contracts being concluded or changes being made to existing contracts, the whole set of data must be notified to the Secretary of State by the end of September of the relevant year. ...
7. In circumstances duly justified by the need to guarantee transparency of key gas supply contracts relevant to the security of gas supply, and where the Secretary of State considers that a gas supply contract may jeopardise the security of gas supply of the United Kingdom, the Secretary of State may request the natural gas undertaking to provide the contract, excluding price information, for the assessment of its impact on the security of gas supply. The request shall be reasoned and may cover also details of any other commercial agreements that are relevant for the execution of the gas supply contract excluding price information. The justification shall include the proportionality of the administrative burden involved.
8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. The Secretary of State must take into account the information received under this Article in the preparation of the risk assessment, preventative action plan and emergency plan or their respective updates.
10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12. All contracts or contractual information received on the basis of paragraphs 6 and 7 by the Secretary of State shall remain confidential. The Secretary of State shall ensure full confidentiality.
Article 15 

1. Any commercially sensitive information received, exchanged or transmitted pursuant to Article 14(4), (6) and (7) shall be confidential and subject to the conditions of professional secrecy laid down in this Article.
2. The obligation of professional secrecy shall apply to the following persons who receive confidential information in accordance with this Regulation:
(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(c) the Secretary of State and persons who are authorised or who have been authorised to represent the Secretary of State and the regulatory authority or for other relevant authorities;
(d) auditors and experts instructed by the Secretary of State and the regulatory authority or by other relevant authorities.
3. Without prejudice to cases covered by criminal law, the other provisions of this Regulation or other relevant  assimilated  law, confidential information received by the persons referred to in paragraph 2 in the course of their duties may not be divulged to any other person or authority, except in summary or aggregate form such that an individual market participant or market place cannot be identified.
4. Without prejudice to cases covered by criminal law, the Secretary of State, the regulatory authority, bodies or persons which receive confidential information pursuant to this Regulation may use confidential information only in the performance of their duties and for the exercise of their functions. Other authorities, bodies or persons may use that information for the purpose for which it was provided to them or in the context of administrative or judicial proceedings specifically related to the exercise of their functions.
Article 16 
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Article 17 
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Article 18 
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Article 19 
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Article 19A 

(1. Any power to make regulations conferred on the Secretary of State by this Regulation is exercisable by statutory instrument.
(2. Before making regulations which apply to Northern Ireland, the Secretary of State must consult—
(a) the Department for the Economy; and
(b) the competent authority of the Republic of Ireland for the purposes of this Regulation as it applies in EU law.
(3. A statutory instrument containing regulations made under this Regulation is subject to annulment in pursuance of a resolution of either House of Parliament.
Article 20 
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Article 21 
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Article 22 
This Regulation shall enter into force on the fourth day following that of its publication in the Official Journal of the European Union.
It shall apply from 1 November 2017.
However, Article 13(1) to (6), the first and second subparagraphs of Article 13(8), and Article 13(14) and (15) shall apply from 1 December 2018.
...Done at Strasbourg, 25 October 2017.
For the European Parliament
The President
A. TAJANI
For the Council
The President
M. MAASIKAS
ANNEX I

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ANNEX II
1. 
The N – 1 formula describes the ability of the technical capacity of the gas infrastructure to satisfy total gas demand in the calculated area in the event of disruption of the single largest gas infrastructure during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years.

Gas infrastructure shall cover the gas transmission network including interconnections, as well as production, LNG and storage facilities connected to the calculated area.

The technical capacity of all remaining available gas infrastructure in the event of disruption of the single largest gas infrastructure shall be at least equal to the sum of the total daily gas demand of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years.

The results of the N – 1 formula, as calculated below, shall be at least equal to 100 %.

2. 
N−1%=EPm+Pm+Sm+LNGm−ImDmax×100, N – 1 ≥ 100 %

The parameters used for the calculation shall be clearly described and justified.

For the calculation of the EPm, a detailed list of the entry points and their individual capacity shall be provided.

3. 
‘Calculated area’ means a geographical area for which the N – 1 formula is calculated, as determined by the Secretary of State.

‘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.


 ‘EPm’: technical capacity of entry points (in mcm/d), other than production, LNG and storage facilities covered by Pm, LNGm and Sm, means the sum of the technical capacity of all border entry points capable of supplying gas to the calculated area.
 ‘Pm’: maximal technical production capability (in mcm/d) means the sum of the maximal technical daily production capability of all gas production facilities which can be delivered to the entry points in the calculated area.
 ‘Sm’: maximal technical storage deliverability (in mcm/d) means the sum of the maximal technical daily withdrawal capacity of all storage facilities which can be delivered to the entry points of the calculated area, taking into account their respective physical characteristics.
 ‘LNGm’: maximal technical LNG facility capacity (in mcm/d) means the sum of the maximal technical daily send-out capacities at all LNG facilities in the calculated area, taking into account critical elements like offloading, ancillary services, temporary storage and re-gasification of LNG as well as technical send-out capacity to the system.
 ‘Im’ means the technical capacity of the single largest gas infrastructure (in mcm/d) with the highest capacity to supply the calculated area. When several gas infrastructures are connected to a common upstream or downstream gas infrastructure and cannot be separately operated, they shall be considered as one single gas infrastructure.

4. 
N−1%=EPm+Pm+Sm+LNGm−ImDmax−Deff×100, N – 1 ≥ 100 %

‘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).

5. 
...





ANNEX III
1 For the execution of the provisions set out in this Annex the regulatory authority may act on behalf of the Secretary of State if so decided by the Secretary of State.

2. 

((a)) a proposal to enable permanent physical capacity to transport gas in both directions for permanent bi-directional capacity concerning the reverse direction (‘physical reverse flow capacity’); or
((b)) a request for an exemption from the obligation to enable bi-directional capacity.

The transmission system operator in the United Kingdom must endeavour to submit a joint proposal or request for exemption with the transmission system operators on the other side of the interconnection.

3. Upon receipt of the proposal or the exemption request the Secretary of State must without delay endeavour to consult the competent authorities and, where they are not the competent authorities, the national regulatory authorities, of the member State that could, in accordance with the risk assessment, benefit from the reverse flow capacity... on the proposal or the exemption request. The authorities consulted may issue an opinion within four months of receipt of the consultation request.

4 The regulatory authority must within six months of receipt of the joint proposal, pursuant to Article 5(6) and (7), after consulting the project promoters concerned, endeavour to take a coordinated decision with the national regulatory authorities of the member States concerned on the cross-border allocation of investment costs to be borne by each transmission system operator of the project. Where the regulatory authority and the national regulatory authorities concerned have not reached an agreement within that deadline, the regulatory authority must inform the Secretary of State without delay.

5. 

((a)) accept the proposal for bi-directional capacity. Such decision shall contain a cost benefit analysis, a timeline for implementation and the arrangements for its subsequent use and be accompanied by the coordinated decision on the cross-border cost allocation referred to in point 4 and prepared by the regulatory authority and the national regulatory authorities of the member States concerned, provided such coordinated decision has been reached;
((b)) grant or prolong a temporary exemption for a maximum period of four years, if the cost-benefit analysis included in the decision shows that the reverse flow capacity would not enhance the security of gas supply of the United Kingdom or any relevant member State, or if the investment costs would significantly outweigh the prospective benefits for the security of gas supply; or
((c)) request the transmission system operators in the United Kingdom to amend and resubmit their proposal or exemption request within a maximum period of four months although any proposal or exemption request may only be considered a total of three times, before a fresh proposal or exemption is required.

6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

12. The Secretary of State..., the national regulatory authorities and the transmission system operators shall preserve the confidentiality of commercially sensitive information.

13. Exemptions from the obligation to enable bi-directional capacity granted under Regulation (EU) No 994/2010 shall remain valid unless  the concerned member State  requests a revision or their duration expires.

ANNEX IV
The following template shall be completed in a language agreed within the risk group.

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1. 
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2. 
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3. 
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4. 
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5. 
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ANNEX V
The Secretary of State has prepared this risk assessment in relation to security of gas supply in the United Kingdom.

1.  1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 ... Provide a brief description of the gas system of the United Kingdom, covering:

((a)) the main gas consumption figures: annual final gas consumption (bcm) and breakdown by type of customers, peak demand (mcm/d);
((b)) a description of the functioning of the gas system at national level, including infrastructure (to the extent not covered by point 1.1(b)). If applicable, include L-gas system;
((c)) the identification of the key infrastructure relevant for the security of gas supply;
((d)) a breakdown, to the extent possible, at national level of gas import sources per country of origin;
((e)) a description of the role of storage and include:

((i)) the storage capacity (total and working) compared to heating season demand;
((ii)) the maximal daily withdrawal capacity at different filling levels (ideally with full storages and end-of-season levels);
((f)) a description of the role of domestic production and include:

((i)) the volume of production with regard to the annual final gas consumption;
((ii)) the maximal daily production capacity;
((g)) a description of the role of gas in the electricity production (e.g. importance, role as a back-up for renewables), including gas-fired generating capacity (total (MWe) and as percentage of the total generating capacity) and cogeneration (total (MWe) and as percentage of the total generating capacity).

2. 
Describe how the infrastructure standard is complied with, including the main values used for the N – 1 formula and alternative options for its compliance (with directly connected Member States, demand-side measures) and the existing bidirectional capacities, as follows:


((a)) N – 1 formula

((i)) the identification of the single largest gas infrastructure;
((ii)) the calculation of the N – 1 formula for the United Kingdom;
((iii)) a description of the values used for all elements in the N – 1 formula, including intermediate values used for their calculation (e.g. for EPm indicate the capacity of all entry points considered under this parameter);
((iv)) an indication of the methodologies used, if any, for the calculation of parameters in the N – 1 formula (e.g. Dmax) (use annexes for detailed explanations);
((v)) an explanation of the results of the calculation of the N – 1 formula considering the level of storages at 30 % and 100 % of the maximum working volume;
((vi)) an explanation of the main results of the simulation of the N – 1 formula using a hydraulic model;
((vii)) if so decided by the Secretary of State, a calculation of the N – 1 formula using demand-side measures:

— calculation of the N – 1 formula in accordance with point 2 of Annex II,
— description of the values used for all elements in the N – 1 formula, including intermediate figures used for the calculation (if different to the figures described under point 2(a)(iii)),
— indicate the methodologies used, if any, for the calculation of parameters in the N – 1 formula (e.g. Dmax) (use annexes for detailed explanations),
— explain the market-based demand-side measures adopted/to be adopted to compensate a disruption of gas supply and its expected impact (Deff);
((viii)) ...
((b)) bi-directional capacity

((i)) indicate the interconnection points equipped with bidirectional capacity and the maximal capacity of bi-directional flows;
((ii)) indicate the arrangements governing the use of the reverse flow capacity (e.g. interruptible capacity);
((iii)) indicate interconnection points where an exemption has been granted in accordance with Article 5(4), the duration of the exemption and the grounds on which it was granted.

3. 
Describe the risk factors which could have negative impact on the security of gas supply in the United Kingdom, their likelihood and consequences.

Non-exhaustive list of types of risk factors that have to be included in the assessment only if applicable according to the Secretary of State:


((a)) political

— gas disruption from countries outside of the United Kingdom  because of different reasons,
— political unrest (either in country of origin or in transit country),
— war/civil war (either in country of origin or in transit country),
— terrorism;
((b)) technological

— explosion/fires,
— fires (internal to a given facility),
— leakages,
— lack of adequate maintenance,
— equipment malfunction (failure to start, failure during working time, etc.),
— lack of electricity (or other energy source),
— ICT failure (hardware or software failure, internet, SCADA problems, etc.),
— cyber-attack,
— impact due to excavation works (digging, piling), ground works, etc.;
((c)) commercial/market/financial

— agreements with suppliers outside of the United Kingdom,
— commercial dispute,
— control of infrastructure relevant for the security of gas supply by third-country entities, which may imply, among others, risks of underinvestment, undermining diversification or non-respect of Union law,
— price volatility,
— underinvestment,
— sudden, unexpected peak demand,
— other risks which could lead to structural underperformance;
((d)) social

— strikes (in different related sectors, such as the gas sector, ports, transport, etc.),
— sabotage,
— vandalism,
— theft;
((e)) natural

— earthquakes,
— landslides,
— floods (heavy rain, river),
— storms (sea),
— avalanches,
— extreme weather conditions,
— fires (external to the facility, like nearby forests, grassland, etc.).


((a)) identify the relevant risk factors for the United Kingdom, including their likelihood and impact;
((b)) describe the criteria used to determine whether a system is exposed to high/unacceptable risks;
((c)) set a list of relevant risk scenarios in accordance with the risk factors and their likelihood and describe how the selection was made.

4. 
Analyse the set of relevant risk scenarios identified under point 3. In the simulation of risk scenarios include the existing security of gas supply measures, such as the infrastructure standard calculated using the N – 1 formula as set out in point 2 of Annex II, and the gas supply standard. Per risk scenario:


((a)) describe in detail the risk scenario, including all assumptions and, if applicable, the underlying methodologies for their calculation;
((b)) describe in detail the results of the simulation carried out, including a quantification of the impact (e.g. volumes of unserved gas, the socioeconomic impact, the impact on district heating, the impact on electricity generation).

5. 
Describe the main results of the ... risk scenarios that require further action.

ANNEX VI
The Secretary of State has prepared this plan for the United Kingdom

1.  1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 ... Provide a brief description of the gas system  for the United Kingdom, covering:

((a)) the main gas consumption figures: annual final gas consumption (bcm) and breakdown by type of customers, peak demand (mcm/d);
((b)) a description of the functioning of the gas system ..., including infrastructure (to the extent not covered by point 1.1(b));
((c)) the identification of the key infrastructure relevant for the security of supply;
((d)) a breakdown, to the extent possible, ... of gas import sources per country of origin;
((e)) a description of the role of storage in the United Kingdom and include:

((i)) the storage capacity (total and working) compared to heating season demand;
((ii)) the maximal daily withdrawal capacity at different filling levels (ideally with full storages and end-of-season levels);
((f)) a description of the role of domestic production and include:

((i)) the volume of production with regard to the annual final gas consumption;
((ii)) the maximal daily production capacity;
((g)) a description of the role of gas in the electricity production (e.g. importance, role as a back-up for renewables), including gas-fired generating capacity (total (MWe) and as percentage of the total generating capacity) and cogeneration (total (MWe) and as percentage of the total generating capacity);
((h)) a description of the role of energy efficiency measures and their effect on annual final gas consumption.

2. 
Describe briefly the results of the relevant ... risk assessment carried out in accordance with Article 7, including:


((a)) a list of the scenarios assessed and a brief description of the assumptions applied for each one as well as the risks/shortcomings identified;
((b)) the main conclusions of the risk assessment.

3. 
Describe how the infrastructure standard is complied with, including the main values used for the N – 1 formula and alternative options for its compliance (with neighbouring Member States, demand-side measures) and the existing bidirectional capacities, as follows:
 3.1.  3.2. 

((a)) N – 1 formula

((i)) the identification of the single largest gas infrastructure;
((ii)) the calculation of the N – 1 formula ...;
((iii)) a description of the values used for all elements in the N – 1 formula, including intermediate values used for the calculation (e.g. for EPm indicate the capacity of all entry points considered under this parameter);
((iv)) an indication of the methodologies used, if any, for the calculation of parameters in the N – 1 formula (e.g. Dmax) (use annexes for detailed explanations);
((v)) if so decided by the Secretary of State, calculation of the N – 1 formula using demand-side measures:

— the calculation of the N – 1 formula in accordance with point 2 of Annex II,
— a description of the values used for all elements in the N – 1 formula, including intermediate figures used for the calculation (if different to the figures described under point 3(a)(iii) of this Annex),
— an indication of the methodologies used, if any, for the calculation of parameters in the N – 1 formula (e.g. Dmax) (use annexes for detailed explanations),
— an explanation of the market-based demand-side measures adopted/to be adopted to compensate a disruption of gas supply and its expected impact (Deff);
((vi)) ...
((b)) bi-directional capacity

((i)) indicate the interconnection points equipped with bidirectional capacity and the maximal capacity of bi-directional flows;
((ii)) indicate the arrangements governing the use of the reverse flow capacity (e.g. interruptible capacity);
((iii)) indicate interconnection points where an exemption has been granted in accordance with Article 5(4), the duration of the exemption and the grounds on which it was granted.

4. 
Describe the measures adopted in order to comply with the supply standard as well as with any increased supply standard or additional obligation imposed for reasons of security of gas supply:


((a)) definition of protected customers applied, including categories of customers covered and their annual gas consumption (per category, net value and percentage of the national annual final gas consumption);
((b)) gas volumes needed to comply with the supply standard in accordance with the scenarios described in the first subparagraph of Article 6(1);
((c)) capacity needed to comply with the supply standard in accordance with the scenarios described in the first subparagraph of Article 6(1);
((d)) measure(s) in place to comply with the supply standard:

((i)) a description of the measure(s);
((ii)) addressees;
((iii)) where it exists, describe any ex ante monitoring system for the compliance with the supply standard;
((iv)) sanctions regime, if applicable;
((v)) describe, per measure:

— the economic impact, effectiveness and efficiency of the measure,
— the impact of the measure on the environment,
— impact of the measures on consumer,
((vi)) where non-market-based measures are applied (per measure):

— justify why the measure is necessary (i.e. why security of supply cannot be achieved via market-based measures alone),
— justify why the measure is proportionate (i.e. why the non-market-based measure is the least restrictive means to achieve the intended effect),
— provide an analysis of the impact of the measure on the national market,
((vii)) where measures introduced on or after 1 November 2017, please provide a short summary of the impact assessment or a link to the public impact assessment of the measure(s) carried out in accordance with Article 9(4);
((e)) if applicable, describe any increased supply standard or additional obligation imposed for reasons of security of gas supply:

((i)) a description of the measure(s);
((ii)) ...
((iii)) if applicable, describe any new increased supply standard or additional obligation imposed for reasons of security of gas supply adopted on or after 1 November 2017;
((iv)) addressees;
((v)) affected gas volumes and capacities;
((vi)) indicate how that measure complies with the conditions laid down in Article 6(2).

5. 
Describe the preventive measures in place or to be adopted:


((a)) describe each of the preventive measures adopted per identified risk in accordance with the risk assessment, including a description of:

((i)) their national ... dimension;
((ii)) their economic impact, effectiveness and efficiency;
((iii)) their impact on customers.
Where appropriate, include:

— ...
— measures to diversify gas routes and sources of supply,
— measures to protect key infrastructure relevant for the security of supply in relation to control by third-country entities (including, where relevant, general or sector-specific investment screening laws, special rights for certain shareholders, etc.);
((b)) describe other measures adopted for reasons other than the risk assessment but with a positive impact for the security of supply ....
((iii)) provide an analysis of the impact of such measure:

— justify why the measure is necessary (i.e. why the security of supply cannot be achieved via market-based measures alone),
— justify why the measure is proportionate (i.e. why the non-market-based measure is the least restrictive means to achieve the intended effect),
— provide an analysis of the impact of the measure on the national market; 
— explain the extent to which efficiency measures, including on the demand side, have been considered to increase the security of supply;
— explain the extent to which renewable energy sources have been considered to increase the security of supply.

6. 
Describe other measures and obligations that have been imposed on natural gas undertakings and other relevant bodies likely to have an impact on the security of gas supply, such as obligations for the safe operation of the system, including who would be affected by that obligation as well as the gas volumes covered. Explain precisely when and how those measures would apply.

7. 

((a)) describe future infrastructure projects..., including an estimated timing for their deployment, capacities and estimated impact on the security of gas supply in the United Kingdom;
((b)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. 
Indicate the existing public service obligations related to the security of supply and briefly describe them (use annexes for more detailed information). Explain clearly who has to comply with such obligations and how. If applicable, describe how and when those public service obligations would be triggered.

9. 
In accordance with Article 8(2) of this Regulation, describe the mechanism used for and the results of the consultations carried out, for the development of the plan as well as the emergency plan, with:


((a)) gas undertakings;
((b)) relevant organisations representing the interests of households;
((c)) relevant organisations representing the interests of industrial gas customers, including electricity producers;
((d)) the regulatory authority.

10. 
Indicate any national circumstances and measures relevant for the security of supply and not covered in the previous sections of the plan.

Indicate how the possible comments received following the consultation described in Article 8(2) have been considered.
 11.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 11.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 11.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ANNEX VII
The Secretary of State is responsible for the preparation of the present plan for the United Kingdom

1. 

((a)) indicate the body responsible for the declaration of each crisis level and the procedures to follow in each case for such declarations;
((b)) where they exist, include here indicators or parameters used to consider whether an event may result in a significant deterioration of the supply situation and to decide upon the declaration of a certain crisis level.

2.  2.1. 
Describe the measures to be applied at this stage, indicating, per measure:


((i)) a brief description of the measure and main actors involved;
((ii)) describe the procedure to follow, if applicable;
((iii)) indicate the expected contribution of the measure to cope with the impact of any event or prepare ahead of its appearance;
((iv)) describe the flows of information among the actors involved.
 2.2. 

((a)) describe the measures to be applied at this stage, indicating, per measure:

((i)) a brief description of the measure and main actors involved;
((ii)) describe the procedure to follow, if applicable;
((iii)) indicate the expected contribution of the measure to cope with the situation at alert level;
((iv)) describe the flows of information among the actors involved;
((b)) describe the reporting obligations imposed on natural gas undertakings at alert level.
 2.3. 

((a)) establish a list of predefined actions on the supply and demand side to make gas available in the event of an emergency, including commercial agreements between the parties involved in such actions and the compensation mechanisms for natural gas undertakings where appropriate;
((b)) describe the market-based measures to be applied at this stage, indicating, per measure:

((i)) a brief description of the measure and main actors involved;
((ii)) describe the procedure to follow;
((iii)) indicate the expected contribution of the measure to mitigate the situation at emergency level;
((iv)) describe the flows of information among the actors involved;
((c)) describe the non-market-based measures planned or to be implemented for the emergency level, indicating, per measure:

((i)) a brief description of the measure and main actors involved;
((ii)) provide an assessment of the necessity of such measure in order to cope with a crisis, including the degree of its use;
((iii)) describe in detail the procedure to implement the measure (e.g. what would trigger the introduction of this measure, who would take the decision);
((iv)) indicate the expected contribution of the measure to mitigate the situation at emergency level as a complement to market-based measures;
((v)) assess other effects of the measure;
((vi)) justify the compliance of the measure with the conditions laid down in Article 11(6);
((vii)) describe the flows of information among the actors involved;
((d)) describe reporting obligations imposed on natural gas undertakings.

3. 

((a)) district heating

((i)) briefly indicate the likely impact of a disruption of gas supply in the district heating sector;
((ii)) indicate measures and actions to be taken to mitigate the potential impact of a disruption of gas supply on district heating. Alternatively, indicate why the adoption of specific measures is not appropriate;
((b)) supply of electricity generated from gas

((i)) briefly indicate the likely impact of a disruption of gas supply in the electricity sector;
((ii)) indicate measures and actions to be taken to mitigate the potential impact of a disruption of gas supply on the electricity sector. Alternatively, indicate why the adoption of specific measures is not appropriate;
((iii)) indicate the mechanisms/existing provisions to ensure appropriate coordination, including exchange of information, between main actors in the gas and electricity sectors, in particular transmission system operators at different crisis levels.

4. 
Indicate who the crisis manager is and define its role.

5. 

((a)) per crisis level, define the roles and responsibilities, including interactions with the relevant authorities and, where appropriate, with the ... regulatory authority, of:

((i)) natural gas undertakings;
((ii)) industrial customers;
((iii)) relevant electricity producers;
((b)) per crisis level, define the role and responsibilities of the relevant authorities and the bodies to which tasks have been delegated.

6. 
Describe measures in place to prevent to the extent possible and without endangering the safe and reliable operation of the gas system or creating unsafe situations, the consumption by customers who are not protected customers of gas supply intended for protected customers during an emergency. Indicate the nature of the measure (administrative, technical, etc.), main actors and the procedures to follow.

7. 

((a)) indicate the calendar for the real time response simulations of emergency situations;
((b)) indicate actors involved, procedures and concrete high and medium impact scenarios simulated.

For the updates of the emergency plan: describe briefly the tests carried out since the last emergency plan was presented and the main results. Indicate which measures have been adopted as a result of those tests.

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ANNEX VIII

In developing the preventive action plan and the emergency plan the Secretary of State shall consider the contribution of the following indicative and non-exhaustive list of measures only in the event of an emergency:

((a)) supply-side measures:

— use of strategic gas storage,
— enforced use of stocks of alternative fuels ... ,
— enforced use of electricity generated from sources other than gas,
— enforced increase of gas production levels,
— enforced storage withdrawal;
((b)) demand-side measures:

— various steps of compulsory demand reduction including:
— enforced fuel switching,
— enforced utilisation of interruptible contracts, where not fully utilised as part of market-based measures,
— enforced firm load shedding.

ANNEX IX

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