REVISION SHEET FOR STORAGE SERVICE RULES

REVISION SHEET FOR STORAGE SERVICE RULES dated 18 June 2014 (as amended) consolidated text published of 6 April 2018 Warsaw, January 2019 1

1 The Storage Service Rules of 18 June 2014 (as amended) consolidated text published of 6 April 2018 (hereinafter the Rules ) shall be amended as follows: STORAGE SERVICE RULES REVISION SHEET Publication date: January 2019 Expected effective date of the proposed changes: April 2019 Amendments to the Storage Service Rules of 18 June 2014, as amended, the consolidated text published on 6 April 2018, included in the Revision Sheet, are specifically due to: extension of the Rules onto New Storage Capacity available in the GSF Kawerna, as a result of the ongoing development of CUGS Kosakowo, update of operating characteristics of the Storage Facilities making part of the GSF Kawerna, related to the ongoing development of the CUGS Kosakowo and change of working volume of the CUGS Mogilno, as well as update of operating characteristics of GSF Sanok, reduction of the minimum amount of Working Volume for the services offered, from 1000 MWh to 200 MWh, change of the time frame for the submission of applications for a Long-Term Storage Services Agreement, shortening the period for submitting applications for a Short-Term SSA under a regular procedure, alignment of the period of public consultations on amendments to the Rules with the principles applicable to the gas transmission system operator, implementation of learnings gained from the practical experience in the application of the Rules. Changes to the operating characteristics of a Storage Facility, or Group of Storage Facilities, as introduced pursuant to clause 1.7.8.3 of the Rules are not be subject to consultation. No. Clause of the Rules to be amended Amendments to the Rules 1. 1.1. Energy Law Act the Energy Law Act of 10 April 1997 (consolidated text in Journal of Laws of 20172018, item 220755, as amended), 2. 1.1. Stockpiling Act the Act of 16 February 2007 on the stockpiling of crude oil, petroleum products and natural gas and on the operating procedures applicable in emergencies involving state fuel security or oil market disturbances (consolidated text in Journal of Laws of 20172018, item 12101323 as amended) 3. 1.5.1. These Rules shall be effective as of the beginning of the Gas Day starting on the day on which the SSO implements a Tariff 1/20182019. 2

4. 1.7.4. The SSO shall hold the consultations on proposed amendments to the Rules or on the draft of new Rules with interested parties. For the purpose of these consultations, on the same date on which the proposed amendments or new draft Rules are published on the OIP, the SSO shall notify all Storage Customers, Applicants and the TSO, either in writing or by electronic mail, of the proposed amendments to the Rules having been made public. The SSO shall publish each revision sheet or draft of the new Rules on the OIP in Polish and English language version, and shall make them accessible for review at its registered office. The Polish language version shall be binding and the English language version is for information only. The SSO shall hold public consultations on the draft of the Rules or amendments thereto. For this purpose, the SSO shall publish the draft of the new Rules or the Revision Sheet on the OIP, both in Polish and in English, provided that the Polish language version shall be binding and the English language version shall only serve for information purposes. 5. 1.7.5. The interested parties may submit their comments concerning proposed amendments to the SSO within 14 Business Days of publishing the revision sheet or the draft of the new Rules on the OIP. The SSO shall inform Storage Customers, Applicants and the TSO in writing, by email or through the OIEP, about the public access to the draft of the Rules or amendments thereto, and about the possibility to submit comments, indicating at the same time the method and deadline for the submission of such comments, which shall be at least 14 of the date of the publication of the Revision Sheet or the draft of the new Rules on the OIP. 6. 1.7.10. The SSO shall advise all the Storage Customers, either in writing or by email to the addresses indicated by such Storage Customers in the SSA or the OIEP, of the amendments to the Rules or new Rules having been made available on the OIP within 7 days of the publication of the amendments to the Rules, or the new Rules, under clause 1.7.6., together with information on the effective date of the amendments to the Rules, or the new Rules, and the Storage Customer's right to terminate the SSA in accordance with clause 1.7.11. 7. 1.7.13. In case when the SSO adopts amendments to the Rules, or new Rules, which necessitate the adjustment of the provisions set out in the SSA, after the publication of the amendments to the Rules, or new Rules, in accordance with clause 1.7.6, the SSO shall advise Storage Customer in writing without undue delay of the need to introduce certain changes to the SSA and shall send a draft of the amendment of the SSA, or the draft of an amended SSA, including all the proposed changes, together with information about the Storage Customer's right to terminate the SSA in accordance with clause 1.7.14. The provisions of this clause 1.7.13 shall apply accordingly to SSAs executed prior to the entry of these Rules into force. 8. 1.10.2. The SSO, subject to clause 1.10.3 acting at the request and on behalf of the Storage Customer shall report to the Agency for the Cooperation of Energy and, at their request, to national regulatory authorities, through a RRM selected by the SSO, on the volumes of natural gas the Storage Customer holds in storage at the end of the Gas Day, as stipulated under Article 9(9) of the Implementing Regulation of the Commission (EU) No 1348/2014. The reporting of the information referred to in the preceding sentence shall require the execution of a dedicated agreement between the Storage Customer and the SSO and the registration of the Storage Customer in the CEREMP system. shall report to the Agency and, at their request, to national regulatory authorities for each storage facility or, where facilities operated in groups, for each group of storage facilities following information through a joint platform. 3

9. New clause 1.10.3. has been added The SSO shall carry out the reporting obligations set out in clause 1.10.2 on the basis of a separate agreement concluded with the Storage Customer and as part of the charges for the provision of Storage Services. 10. 2.2.6. The Storage Service shall be provided to the extent allowed by the technical capabilities of the Storage Facility or Group of Storage Facilities, and taking into account the technical parameters of such facility or group of facilities, as well as the Pressures prevailing in the Transmission System at points of connection between and the Storage Facility or Group of Storage Facilities, quality specifications of Gaseous Fuel injected to, or withdrawn from, the Storage Facility or Group of Storage Facilities, Transmission Capacity Allocations obtained by the SSO, and in accordance with the principles set out in these Rules, SSA and the Tariff., and within the limits of the Transmission Capacity Allocations obtained by the SSO, subject to clause 3.5.6. 11. 2.3.4.8. The provisions on the Extension of Offered Services shall not apply to the Intraday Storage Service, nor to Day-Ahead Storage Service, nor to Reverse Storage Service. 12. 2.3.5.5. The provisions concerning the Reduction of Offered Services shall not apply to the Intraday Storage Service, nor to the Day-Ahead Storage Service, nor to Reverse Storage Service. 13. 2.7.7.1. 2.7.7. Notwithstanding the duty referred to in the preceding clause: 2.7.7.1. in case when the Applicant submits an application for a SSA in order to create a mandatory stock, the Applicant shall be obliged to present the SSO with a copy of the decision of the President of ERO concerning the determination or verification of the stock volume immediately following its delivery to the Applicant. 14. Clause 2.7.7.2. is deleted 2.7.7. Notwithstanding the duty referred to in the preceding clause: 2.7.7.2. in case when the Applicant obtained the allocation of Transmission Ability prior to the date set out in Article 25.3 of the Stockpiling Act, the Applicant shall send a copy of the application addressed to the President of ERO for purpose of the validation of the volume of the mandatory stock of Gaseous Fuel by the date specified in the Stockpiling Act; provided that the copy of the decision of the President of ERO concerning the validation of the stock volume shall be presented by the Applicant to the SSO immediately following its delivery to the Applicant; 15. 2.8.1. A Storage Customer providing the Ticket Service shall provide the SSO with information on the entities ordering the ticket service, owners of gaseous fuel and information that may be relevant to the performance of the obligation set out in clause The Storage Customer providing the Ticket Service shall provide the SSO with information on the entities ordering the Ticket Service, owners of gaseous fuel, volume of the mandatory stock kept on the basis of the Ticket Service by the party ordering the Ticket Service as well as any information that may be relevant to the performance of the obligation set out in clause 1.10.2. The Storage Customer providing the Ticket Service shall inform the SSO immediately about any changes in the above scope. 4

16. 2.8.2. A Storage Customer providing the Ticket Service shall be obliged to provide the SSO with a copy of the decision of the President of ERO concerning the verification of the level of stocks, or on the determination of the level of stocks of each entity using the Ticket Service, within 14 days of its receipt, under the pain that the SSO may refuse to confirm the capability of deploying the mandatory stocks in the Storage Facility or Group of Storage Facilities. The Storage Customer providing the Ticket Service shall be obliged to provide the SSO with a copy of the decision of the President of ERO concerning the verification of the level of stocks, or on the determination of the level of stocks of each entity using the Ticket Service immediately upon its receipt. 17. 2.8.3. A Storage Customer providing the Ticket Service shall be obliged to provide the SSO with a copy of the decision of the President of ERO approving the draft of the agreement for expressing a consent for the execution of the agreement on the performance of duties concerning the maintenance of the mandatory stocks of natural gas, which is referred to in Article 24.b section 6 of the Stockpiling Act immediately after receiving such decision. 18. 2.8.4. In the event when the Storage Customer providing the Ticket Service is not the owner of the Gaseous Fuel, the Storage Customer shall have the right to dispose of such Gaseous Fuel injected in the performance of the Ticket Service, for the benefit and in the name of the owner of the Gaseous Fuel, to the extent specified under the contract between the Storage Customer and the user of the Ticket Service, and provided that this does not compromise the established mandatory stock 19. New clause 2.12.1.16.9. has been added 2.12.1.16. A Nomination or Renomination may be rejected for the following reasons: 2.12.1.16.9. when at least one Storage Facility making part of a Group of Storage Facilities is undergoing the Spring or Autumn Downtime Period, and the other Storage Facilities of the same Group of Storage Facilities which are not subject to such downtime period to hold the mandatory stock. 20. New clause 2.12.2.4. has been added In justified cases, the dispatching services of the Storage Customer and the SSO may agree, in the course of the dispatching procedure, to shorten the time limits set out in points 6.1.2, 7.1.2, 8.1.2. 21. 2.12.3.5. The SSO shall proceed with the execution of the Renomination in accordance with the time-frame set out in clause 6.1.2, clause 7.1.2 and clause 8.1.2. In justified cases, the dispatching services of the Storage Customer and the SSO may agree, in the course of the dispatching procedure, to shorten the time limits set out in points 6.1.2, 7.1.2, 8.1.2. 22. 3.1.5. The term of the Short-Term SSA, with respect to non-allocated Storage Capacity in the Storage Facility of UGS Wierzchowice or in the GSF Sanok, as referred to in 3.6.2.15, which can be provided during the current Storage Year, with the exception of the Reverse Storage Service, may start not later than at 6.00 a.m. on 1 August of the given year, and shall continue until the end of the current Storage Year, subject to clause 3.1.11. 5

23. 3.1.7. The term of the Short-Term SSA with respect to the Reverse Storage Service shall correspond to 9 consecutive Gas Months and continue from 6.00 a.m. on 1 December of a given year until 6.00 a.m. on 1 September of the following year, subject to clause 3.1.11. 24. Clause 3.2.1.4.7. is deleted A power of attorney to perform operations and incur financial liabilities in the OIEP as part of the use of the Intraday Storage Services and Day-Ahead Storage Services. 25. Clause 3.2.1.4.8. is deleted A power of attorney for the registration and introduction of changes in the OIEP. 26. 3.2.1.5. Each of the documents mentioned in clauses 3.2.1.2 to 3.2.1.4 should be submitted either as the original, computer printout having equivalent effect to the force of the document pursuant to legal regulations, or as a notarised copy or a photocopy certified to be true to the original by a solicitor or advocate, or by duly authorised representatives of the Applicant, with the exception of a computer printout of the information corresponding to the current excerpt from the National Court Register which has equivalent force to the documents issued by the Central Information Service of the National Court Register on the basis of Article 4(4aa) of the Act of 20 August 1997 on the National Court Register - Journal of Laws of 2007 No. 168, item 1186, as amended), which referred to in clause 3.2.1.4.1. 27. 3.3.10. The priority established in clause 3.3.1 a) and in clause 3.3.7 a) shall be applicable to the allocation of Storage Capacity offered under Storage Services under Firm Storage Services in the form of Bundled Units, including the Bundled Units making part of the 90/40 Storage Service, as well as in the form of Flexible Bundled Units comprising Injection Capacity and Withdrawal Capacity ordered jointly, provided that they are equal or greater than the combined Injection Capacity and Withdrawal Capacity specified for the 90/40 Firm Storage Service in the form of Bundled Units. 28. 3.5.2. A Long-Term Conditional SSA shall be executed under a condition precedent that all the other conditions specified therein will be fulfilled until 20 17 March of the year in which the Storage Services are to commence. In case of a Conditional Short-Term SSA, the applicable conditions should be fulfilled at least 3 Business Days prior to the commencement of the Storage Services. In case of a Conditional Long-Term SSA, when the application for its execution was submitted after 31 January20 February of the year when the Storage Services are to commence, and has been approved in accordance with clause 3.6.2.3, the applicable conditions should be fulfilled at least 14 Business Days prior to the commencement of the Storage Services. 29. 3.5.5. In case when any of the conditions specified in the Conditional SSA executed for a term of at least 1 Storage Year in case of the Storage Facility of UGS Wierzchowice and GSF Sanok, or for a term of at least 12 consecutive Gas Months in case of GSF Kawerna, with the exception of the SSA referred to in the last sentence of clause 3.5.2, remains unfulfilled by the date specified in clause 3.5.2, the SSO shall offer unused Storage Capacity to other Storage Customers pursuant to clause 3.3, provided that the SSO shall advise the Storage Customers of the possibility to allocate additional Storage Capacity no later than by 23 20 March, and each Storage Customer shall advise the SSO whether it is interested in increasing the Storage Capacity and to what extent no later than by 25 23 March. Next, the procedure described in clauses 3.6.2.8 to 3.6.2.11 shall be 6

applied. In such case, the date of 13 February5 March referred to in clause 3.6.2.8 shall be replaced with the date of 27 March, while the dates of 25 February17 March, 9 March27 March and 15 March5 April referred to in clause 3.6.2.9, clause 3.6.2.10. and 3.6.2.11 shall be replaced with the dates of 31 March, 7 April and 12 April, respectively. The SSO shall execute a relevant annex to the SSA with the Storage Customer interested in additional Storage Capacity. 30. 3.5.6. A Conditional SSA shall be expected with the Applicant that has submitted an application for a SSA in a period for which the SSO has not obtained a Transmission Capacity Allocation enabling the injection or withdrawal of Gaseous Fuel from the Storage Facility or the Group of Storage Facilities where the Storage Service is to be provided. In such case, the obtaining of the Transmission Capacity Allocation by the SSO from the TSO shall be deemed to fulfil the condition, and the SSO shall notify the Applicant thereof in writing. The provisions of clauses 3.5.2 to 3.5.5 shall not apply. If the Applicant submits an application for the execution of a SSA with a term of the SSA exceeding the term of the licence for storage of Gaseous Fuels held by the SSO and the decision of the President of ERO concerning the designation of the SSO as the Storage System Operator, a Conditional SSA shall be executed with such Applicant to the extent that the term of the SSA exceeds the validity of both of the above-indicated decisions. In such case, the obtaining by the SSO of a decision of the President of ERO granting the extension of the licence for storage of Gaseous Fuels and the decision of the President of ERO concerning the designation of a storage system operator shall be deemed as fulfilment of the condition, and shall be communicated to the Applicant by the SSO in writing. 31. 3.6.2.2. An application for a Long-Term SSA may be submitted no earlier than on the day of 31 January20 February falling 3 years and 2 months and 15 days before the beginning of the year in which the commencement of the Storage Services is expected and no later than by 03:00 pm on the day of 31 January20 February in the year when such commencement is to take place. The processing of applications shall begin after the final submission date specified in the preceding sentence. Example 1: an application for a SSA for the Storage Year beginning in the year 2020 2023 may be submitted no earlier than on 31 January20 February 2017 2020 and no later than by 03:00 pm on 31 January 20 February 20202023 Example 2: an application for a SSA with respect to GSF Kawerna effective as of 1st day of any Gas Month in the year 2020 2023 may be submitted no earlier than on 31 January 201720 February 2020 and no later than by 03:00 pm on 31 January 202020 February 2023. In case of an application for a revision of the ordered Storage Capacity, the provisions of this clause shall apply accordingly. 32. 3.6.2.3. If an application is received earlier than on the day of 31 January20 February falling 3 years, 2 months and 15 days before expected year when the commencement of the Storage Services is to take place, it shall not be processed, whereas an application received later than by 03:00 pm on 31 January20 February of the year when the commencement of the Storage Services is expected, it shall be processed only after all applications submitted before or on 31 January20 February by 03:00 pm have been processed. The applications submitted after 03:00 pm on 31 January 20 February of the year in which the provision of the Long-Term Storage Service is to start but not later than by 3:00 p.m. on 20 17 March of the same year shall be processed according to the order of their submission, pursuant to the principles set out in clause 3.3.8. Applications submitted after 03:00 pm on 20 17 March of the year in which the provision of the 7

Long-Term Storage Service is to begin, and indicating the starting time for the provision of Storage Services at 06:00 am on 15 April of the same year (the beginning of the Storage Year) shall not be considered. In case when the Applicant applies for a revision of the ordered Storage Capacity, the provisions of this clause shall apply accordingly. For the applications referred to in the second sentence hereof, the time frame for the application processing procedure set out in clause 3.7.2. shall apply as appropriate. 33. 3.6.2.8. By 13 February5 March of the year in which the Storage Services are to commence, the SSO shall advise the Applicant of the outcome of the Application processing, the amount of the allocated Storage Capacity and the value of the financial security to be presented, and shall deliver a draft Long-Term SSA prepared on the basis of the currently applicable standard form to the Applicant, against a confirmation of receipt. In case when the draft SSA contains manifest errors, the Applicant and the SSO will promptly proceed to agree the wording of the document by electronic mail so as to make it possible to keep the deadline set out in clause 3.6.2.9. 34. 3.6.2.9. By 03:00 pm on 25 February17 March of the year in which the Storage Services are to commence, the Applicant shall deliver two (2) signed counterparts of the Long-Term SSA to the SSO, against a confirmation of receipt. In case of the Applicant's failure to deliver the signed SSA to the SSO within the time limit set forth in the preceding sentence, the SSA shall be considered not to have been concluded and the application for a SSA shall be deemed withdrawn, of which the SSO shall immediately advise the Applicant. 35. 3.6.2.10. By 03:00 pm on 9 27 March of the year in which the Storage Services are to commence, the Applicant shall present documents confirming the establishment of the financial security referred to in clause 3.2.2.3 to the SSO. In case of the Applicant's failure to deliver documents confirming the establishment of a proper financial security within the time limit set in accordance with this clause, the SSA shall be considered not to have been concluded and the application for a SSA shall be deemed withdrawn, of which the SSO shall immediately advise the Applicant. At the request of the Applicant, the SSO may express its consent to the extension of the documents confirming the provision of the financial security instrument by up to 14 days. In case of the Applicant's failure to deliver documents confirming the establishment of the financial security within the extended time limit referred to in the preceding sentence, the SSA shall be considered not to have been concluded and the application for a SSA shall be deemed withdrawn, of which the SSO shall immediately advise the Applicant. 36. 3.6.2.11. If the Applicant has delivered a signed counterpart of the Long-Term SSA and the documents confirming the establishment of the financial security, the SSO shall deliver the Long-Term SSA signed by the SSO to the Applicant by 15 March5April of the year in which the Storage Services are to commence, subject to an appropriate extension of this time limit in the event of an extension of the time limit for the submission of documents confirming the presentation of the financial security in accordance with clause 3.6.2.10. 37. 3.6.3.1. The Storage Customer may submit an application to the SSO requesting a revision of the ordered Storage Capacity for the next Storage Year on or before 31 January20 February by 03:00 pm. 38. 3.7.3.2. The Applicant may submit an application for a Short-Term SSA no earlier than 4 months and no later than 2 months30 days before the date on which the 8

provision of the Storage Services is to begin. An Application received earlier than 4 months before the starting date for the provision of Storage Services shall not be processed, whereas an application received later than 2 months 30 days before the starting date for the provision of Storage Services shall be processed only after other applications for a Short-Term SSA, submitted on time, have been processed, in which case the SSO may offer to the Storage Customer to start providing the Storage Services at a later date. With respect to the Storage Services which may be provided as of the beginning of the Storage Year, the time limits specified in clause 3.6.2. for Long-Term Storage Service shall apply. 39. 3.8.3. All invoices and the underlying documents attached thereto shall be sent by registered mail or delivered in another manner against a confirmation of receipt to the address given by the Storage Customer in the SSA. In addition, scans of invoice shall be sent by electronic mail within 2 Business Days of on their issuance date to the address given by the Storage Customer in the SSA. The first and second sentences above do not apply to the Storage Customer that agreed to the issuance and delivery of invoices in a digital form. 40. 3.10.3.3. in case of the termination of the Transmission Contract that confirms the TSO's undertaking to deliver Gaseous Fuel to the Storage Facility or to take Gaseous Fuel from such facility is terminated, or a refusal by the TSO refuses to provide storage services under the Transmission Ability Allocation, in each case due to reasons attributable to the Storage Customer. 41. New clause 3.10.3.5. has been added 42. New clause 3.14 has been added transfer or acquisition by the Storage Customer of the ownership title to Gaseous Fuel injected into the Storage Facility or the Group of Storage Facilities under the SSA, unless the Storage Customer presents the updated statements referred to in clause 3.2.1.4.5 within the time limit stipulated in clause 3.14 Transfer of rights to Gaseous Fuel in a Storage Facility, or a Group of Storage Facilities 43. New clause 3.14.1. has been added When the Storage Customer intends to enter into a transaction that results in a change of the Storage Customer's legal title to Gaseous Fuel maintained in a Storage Facility or Group of Storage Facilities under an existing SSA concluded by the Storage Customer, the Storage Customer shall inform the SSA about the details of the contemplated transaction 7 days before its conclusion, and deliver to the SSO one of the declarations referred to in clause 3.2.1.4.5., within 7 days from the date of entering into the transaction, if, as a result of entering into the transaction, the previous declaration of the Storage Customer, which is referred to in clause 3.2.1.4.5. would otherwise become out of date. 44. New clause 3.14.2. has been added In the event of an intention to enter into a transaction transferring the ownership of Gaseous Fuel maintained in a given Storage Facility or Group of Storage Facilities under an existing SSA concluded by the Storage Customer, onto another Storage Customer being a party to a SSA which enables the continued storage of such Gaseous Fuel in the same Storage Facility or Group of Storage Facilities, the Storage Customers are obliged to inform the SSA about the details of the contemplated transaction 7 days before its conclusion and to provide the SSA with updated declarations, as referred to in clause 3.2.1.4.5. within 7 days from the date of entering into such a transaction, if as a result of entering into such a transaction the declarations referred to in clause 3.2.1.4.5. would otherwise become out of date. 9

45. New clause 3.14.3. has been added When a transaction is concluded with transfers the ownership of the Gaseous Fuel, as referred to in clause 3.14.2., the SSO, on the basis of consistent statements of the Storage Customers being parties to such a transaction, shall allocate the Gaseous Fuel covered by the transaction to the Storage Customer that is the buyer and provides the Storage Customers that are the parties to the above transaction, via e-mail, with information about the current utilisation of the working volume they are eligible to under the respective SSA in a given Storage Facility or Group of Storage Facilities, taking into account the concluded transaction. 46. 6.1.3. Long-Term Storage Service or Short-Term Storage Service 47. 6.1.3.1. 6.1.3.1.1. 6.1.3.1.2. 6.1.3.1.3. 6.1.3.1. Firm Long-Term Storage Service or Short-Term Storage Service in the form of a Bundled Unit shall consist of: 6.1.3.1.1. Working Volume of 1,000200 MWh, 6.1.3.1.2. Injection Capacity of 0.8640.149 MWh/h, 6.1.3.1.3. Withdrawal Capacity of 1.8560.343 MWh/h. 48. 6.1.3.2. 6.1.3.2.1. 6.1.3.2.2. 6.1.3.2.3. 6.1.3.2. Long-Term or Short-Term 90/40 Storage Service in the form of a Bundled Unit shall consist of: 6.1.3.2.1. Working Volume 1,000200 MWh, 6.1.3.2.2. Injection Capacity of 0.7690.151 MWh/h, 6.1.3.2.3. Withdrawal Capacity of 1.8560.343 MWh/h. 49. 6.1.3.3. 6.1.3.3.1. 6.1.3.3.2. 6.1.3.3.3. 6.1.3.3. Firm Long-Term or Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following components ordered jointly: 6.1.3.3.1. Working Volume of 1,000200 MWh, 6.1.3.3.2. Injection Capacity - from 0.1700.029 MWh/h to 0.8640.149 MWh/h, 6.1.3.3.3. Withdrawal Capacity - from 0.2200.038 MWh/h to 1.8560.343 MWh/h. 50. 6.1.3.4. 6.1.3.4.1. 6.1.3.4. Unbundled Firm Long-Term Storage Service, provided exclusively on the basis of a SSA executed for the term of 12 consecutive Gas Months, or Unbundled Firm Short-Term Storage Service provided on the basis of a SSA executed for the term of 1 to 11 consecutive Gas Months (Monthly Storage Service) or the term of 7, 14, 21 consecutive Gas Days (Weekly Storage Service), comprises the following components offered separately: Unbundled Firm Long-Term Storage Service shall include the following offered separately: 6.1.3.4.1. Working Volume of 1,000200 MWh or its multiple, 6.1.3.4.2. Injection Capacity, 6.1.3.4.3. Withdrawal Capacity. 51. 6.1.3.5. 6.1.3.5.1. 6.1.3.5.2. 6.1.3.5.3. 6.1.3.5. Interruptible Long-Term or Short-Term Storage Service in the form of a Bundled Unit shall consist of: 6.1.3.5.1. Working Volume of 1,000200 MWh, 6.1.3.5.2. Injection Capacity of 0.8640.149 MWh/h, 6.1.3.5.3. Withdrawal Capacity of 1.8560.343 MWh/h 10

52. 6.1.3.6. 6.1.3.6.1. 6.1.3.6.2. 6.1.3.6.3. 6.1.3.6. Interruptible Long-Term or Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following ordered jointly: 6.1.3.6.1. Working Volume of 1,000200 MWh, 6.1.3.6.2. Injection Capacity - from 0.1700.029 MWh/h to 0.8640.149 MWh/h, 6.1.3.6.3. Withdrawal Capacity - from 0.2200.038 MWh/h to 1.8560.343 MWh/h. 53. 6.1.3.7. 6.1.3.7.1. 6.1.3.7. Unbundled Interruptible Long-Term Storage Service, provided exclusively on the basis of a SSA executed for the term of 12 consecutive Gas Months, or Unbundled Interruptible Short-Term Storage Service provided on the basis of a SSA executed for the term of 1 to 11 consecutive Gas Months (Monthly Storage Service) or the term of 7, 14, 21 consecutive Gas Days (Weekly Storage Service), comprises the following componentsunbundled Interruptible Long-Term Storage Service shall be provided exclusively under a SSA executed for the period of 12 consecutive Gas Months and include the following offered separately: 6.1.3.7.1. Working Volume of 1,000200 MWh or its multiple, 6.1.3.7.2. Injection Capacity, 6.1.3.7.3. Withdrawal Capacity. 54. Clause 6.1.4. has been deleted 55. Clauses 6.1.4.1. 6.1.4.1.1. 6.1.4.1.2. 6.1.4.1.3. have been deleted Short-Term Storage Service 6.1.4.1. Firm Short-Term Storage Service in the form of a Bundled Unit shall consist of: 6.1.4.1.1. Working Volume of 1,000 MWh, 6.1.4.1.2. Injection Capacity of 0.864 MWh/h, 6.1.4.1.3. Withdrawal Capacity of -1.856 MWh/h. 56. Clauses 6.1.4.2. 6.1.4.2.1. 6.1.4.2.2. 6.1.4.2.3. have been deleted 6.1.4.2. 90/40 Storage Service in the form of a Bundled Unit shall consist of: 6.1.4.2.1. Working Volume 1,000 MWh, 6.1.4.2.2. Injection Capacity of 0.769 MWh/h, 6.1.4.2.3. Withdrawal Capacity of 1.856 MWh/h. 57. Clauses 6.1.4.3. 6.1.4.3.1. 6.1.4.3.2. 6.1.4.3.3. have been deleted 58. Clauses 6.1.4.4. 6.1.4.4.1. 6.1.4.4.2. 6.1.4.4.3. have been deleted 6.1.4.3 Firm Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following ordered jointly: 6.1.4.3.1 Working Volume of 1,000 MWh, 6.1.4.3.2 Injection Capacity - from 0.170 MWh/h to0.864 MWh/h, 6.1.4.3.3. Withdrawal Capacity - from 0.220 MWh/h to 1.856 MWh/h. 6.1.4.4. Unbundled Firm Short-Term Storage Service shall be provided under a SSA executed for a period from 1 to 11 consecutive Gas Months (Monthly Storage Service) or for a period of 7, 14 or 21 consecutive Gas Days (Weekly Storage Service), and include the following offered separately: 6.1.4.4.1 Working Volume of 1,000 MWh or its multiple, 6.1.4.4.2 Injection Capacity, 6.1.4.4.3 Withdrawal Capacity. 11

59. Clauses 6.1.4.5. 6.1.4.5.1. 6.1.4.5.2. 6.1.4.5.3. have been deleted 60. Clauses 6.1.4.6. 6.1.4.6.1. 6.1.4.6.2. 6.1.4.6.3. have been deleted 61. Clauses 6.1.4.7. 6.1.4.7.1. 6.1.4.7.2. 6.1.4.7.3. have been deleted 6.1.4.5 Interruptible Short-Term Storage Service in the form of a Bundled Unit shall consist of: 6.1.4.5.1 Working Volume of 1,000 MWh, 6.1.4.5.2 Injection Capacity of 0.864 MWh/h, 6.1.4.5.3 Withdrawal Capacity of 1.856 MWh/h. 6.1.4.6 Interruptible Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following ordered jointly: 6.1.4.6.1 Working Volume of 1,000 MWh, 6.1.4.6.2 Injection Capacity - from 0.170 MWh/h to 0.864 MWh/h, 6.1.4.6.3 Withdrawal Capacity - from 0.220 MWh/h to 1.856 MWh/h. 6.1.4.7 Unbundled Interruptible Short-Term Storage Service shall be provided under a SSA executed for a period from 1 to 11 Gas Months (Monthly Storage Service) or for a period of 7, 14 or 21 consecutive Gas Days (Weekly Storage Service), and include the following offered separately: 6.1.4.7.1 Working Volume of 1,000 MWh or its multiple, 6.1.4.7.2 Injection Capacity, 6.1.4.7.3 Withdrawal Capacity. 62. 6.5.1. Gas injection curve for GSF Kawerna - Firm and Interruptible Storage Services Note: The introduced forecast Gas injection curve for GSF Kawerna - Firm and Interruptible Storage Services is not subject to consultations. 63. 6.5.2. Gas withdrawal curve for GSF Kawerna - Firm and Interruptible Storage Services Note: The introduced forecast Gas withdrawal curve for GSF Kawerna - Firm and Interruptible Storage Services is not subject to consultations. 64. 7.1.3.1.1. 7.1.3.1.2. 7.1.3.1.3. 7.1.3.1. Firm Long-Term or Short-Term Storage Service in the form of a Bundled Unit shall consist of: 7.1.3.1.1. Working Volume of 1,000200 MWh, 7.1.3.1.2. Injection Capacity of 0.4300.087 MWh/h, 7.1.3.1.3. Withdrawal Capacity of 1.2430.248 MWh/h. 65. 7.1.3.2.2. 7.1.3.2.3. 66. 7.1.3.3. 7.1.3.3.1. 7.1.3.2. Firm Long-Term or Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following components ordered jointly: 7.1.3.2.1. Working Volume of 1,000200 MWh, 7.1.3.2.2. Injection Capacity - from 0.3100.062 MWh/h to 0.430 0.087MWh/h, 7.1.3.2.3. Withdrawal Capacity - from 0.4500.091 MWh/h to 1.2430.248 MWh/h. 7.1.3.3. Unbundled Firm Long-Term Storage Service, provided exclusively on the basis of a SSA executed for the term of one Storage Year, or Unbundled Firm Short-Term Storage Service provided on the basis of a SSA executed for the term of 1 to 11 consecutive Gas Months (Monthly Storage Service), comprisesunbundled Firm Long-Term or Short-Term Storage Service shall comprise the following components offered separately: 7.1.3.3.1 Working Volume of 1,000200 MWh or its multiple, 7.1.3.3.2 Injection Capacity, 7.1.3.3.3 Withdrawal Capacity. 12

67. 7.1.3.4.1. 7.1.3.4.2. 7.1.3.4.3. 7.1.3.4. Interruptible Long-Term or Short-Term Storage Service in the form of a Bundled Unit shall consist of: 7.1.3.4.1 Working Volume of 1,000200 MWh, 7.1.3.4.2 Injection Capacity of 0.4020.080 MWh/h, 7.1.3.4.3 Withdrawal Capacity of 0.5910.117 MWh/h. 68. 7.1.3.5.1. 7.1.3.5.2. 7.1.3.5.3. 7.1.3.5. Interruptible Long-Term or Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following ordered jointly: 7.1.3.5.1 Working Volume of 1,000200 MWh, 7.1.3.5.2 Injection Capacity - from 0.3100.062 MWh/h to 0.4020.080 MWh/h, 7.1.3.5.3 Withdrawal Capacity - from 0.4500.091 MWh/h to 0.5910.117 MWh/h. 69. 7.1.3.6. 7.1.3.6.1. 7.1.3.6. Unbundled Interruptible Long-Term Storage Service, provided exclusively on the basis of a SSA executed for the term of one Storage Year, or Unbundled Interruptible Short-Term Storage Service provided on the basis of a SSA executed for the term of 1 to 11 consecutive Gas Months (Monthly Storage Service), comprises Unbundled Interruptible Long-Term Storage Service shall be provided exclusively on the basis of a SSA executed for the term of one Storage Year or Short-Term Storage Service, and shall comprise the following components offered separately: 7.1.3.6.1 Working Volume of 1,000200 MWh or its multiple, 7.1.3.6.2 Injection Capacity, 7.1.3.6.3 Withdrawal Capacity. 70. 7.1.4.1.1. 7.1.4.1.2. 7.1.4.1.3. 7.1.4.1. Reverse Storage Service in the form of a Bundled Unit shall consist of: 7.1.4.1.1 Working Volume 1,000200 MWh, 7.1.4.1.2 Injection Capacity of 0.6000.120 MWh/h, 7.1.4.1.3 Withdrawal Capacity of 0.6000.120 MWh/h 71. 7.1.4.2.1. 7.1.4.2.2. 7.1.4.2.3. 7.1.4.2. Reverse Storage Service in the form of a Flexible Bundled Unit shall consist of: 7.1.4.2.1 Working Volume 1,000200 MWh, 7.1.4.2.2 Injection Capacity ranging from 0.3000.060 MWh/h to 0.6000.120 MWh/h, 7.1.4.2.3 Withdrawal Capacity ranging from 0.3000.060 MWh/h to 0.6000.120 MWh/h. 72. 7.4.1. Gas injection curve for Interruptible Storage Services in GSF Sanok Note: The introduced forecast Gas injection curve for Interruptible Storage Services in GSF Sanok is not subject to consultations. 73. 7.4.2. Gas injection curve for Firm Storage Services in GSF Sanok Note: The introduced forecast Gas injection curve for Firm Storage Services in GSF Sanok is not subject to consultations. 74. 7.4.3. Gas withdrawal curve for Interruptible Storage Services in GSF Sanok 13

Note: The introduced forecast Gas withdrawal curve for Interruptible Storage Services in GSF Sanok is not subject to consultations. 75. 7.4.4. Gas withdrawal curve for GSF Sanok Firm Storage Services Note: The introduced forecast Gas withdrawal curve for GSF Sanok - Firm Storage Services is not subject to consultations. 76. 8.1.3.1.1. 8.1.3.1.2. 8.1.3.1.3. 77. 8.1.3.2.1. 8.1.3.2.2. 8.1.3.2.3. 78. 8.1.3.3. 8.1.3.3.1. 8.1.3.1. Firm Long-Term or Short-Term Storage Service in the form of a Bundled Unit shall consist of: 8.1.3.1.1. Working Volume of 1,000200 MWh, 8.1.3.1.2. Injection Capacity of 0.4170.083 MWh/h, 8.1.3.1.3. Withdrawal Capacity of 1.1360.227 MWh/h. 8.1.3.2. Firm Long-Term or Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following components ordered jointly: 8.1.3.2.1. Working Volume of 1,000200 MWh, 8.1.3.2.2. Injection Capacity - from 0.2000.041 MWh/h to 0.4170.083 MWh/h 8.1.3.2.3. Withdrawal Capacity - from 0.3300.066 MWh/h to 1.1360.227 MWh/h 8.1.3.3. Unbundled Firm Long-Term Storage Service, provided exclusively on the basis of a SSA executed for the term of one Storage Year, or Unbundled Firm Short-Term Storage Service provided on the basis of a SSA executed for the term of 1 to 11 consecutive Gas Months (Monthly Storage Service), comprises shall be provided exclusively on the basis of a SSA executed for the term of one Storage Year or Short-Term Storage Service, and shall comprise the following components offered separately: 8.1.3.3.1. Working Volume of 1,000200 MWh or its multiple, 8.1.3.3.2. Injection Capacity, 8.1.3.3.3. Withdrawal Capacity. 79. 8.1.3.4.1. 8.1.3.4.2. 8.1.3.4.3. 80. 8.1.3.5.1. 8.1.3.5.2. 8.1.3.5.3. 81. 8.1.3.6. 8.1.3.6.1. 8.1.3.4. Interruptible Long-Term or Short-Term Storage Service in the form of a Bundled Unit shall consist of: 8.1.3.4.1. Working Volume of 1,000200 MWh, 8.1.3.4.2. Injection Capacity of 0.2940.058 MWh/h 8.1.3.4.3. Withdrawal Capacity of 0.4710.094 MWh/h 8.1.3.5. Interruptible Long-Term or Short-Term Storage Service in the form of a Flexible Bundled Unit shall consist of the following ordered jointly: 8.1.3.5.1. Working Volume of 1,000200 MWh, 8.1.3.5.2. Injection Capacity - from 0.2000.041 MWh/h to 0.2940.058 MWh/h 8.1.3.5.3. Withdrawal Capacity - from 0.3300.066 MWh/h to 0.4710.094 MWh/h 8.1.3.6. Unbundled Interruptible Long-Term Storage Service, provided exclusively on the basis of a SSA executed for the term of one Storage Year, or Unbundled Interruptible Short-Term Storage Service provided on the basis of a SSA executed for the term of 1 to 11 consecutive Gas Months (Monthly Storage Service), comprises shall be provided exclusively on the basis of a SSA executed for the term of one Storage Year or Short- Term Storage Service, and shall comprise the following components offered separately: 8.1.3.6.1 Working Volume of 1,000200 MWh or its multiple, 14

8.1.3.6.2 Injection Capacity, 8.1.3.6.3 Withdrawal Capacity. 82. 8.1.4.1. 8.1.4.1 Reverse Storage Service in the form of a Bundled Unit shall consist of: 8.1.4.1.1 Working Volume 1,000200 MWh, 8.1.4.1.2 Injection Capacity of 0.6000.120 MWh/h, 8.1.4.1.3 Withdrawal Capacity of 0.6000.120 MWh/h 83. 8.1.4.2. 8.1.4.2 Reverse Storage Service in the form of a Flexible Bundled Unit shall consist of: 8.1.4.2.1 Working Volume 1,000200 MWh, 8.1.4.2.2 Injection Capacity ranging from 0.3000.060 MWh/h to 0.6000.120 MWh/h, 8.1.4.2.3 Withdrawal Capacity ranging from 0.3000.060 MWh/h to 0.6000.120 MWh/h. 84. Appendix 1 clause 4.1 85. Appendix 3 clause 3.1 86. Appendix 11 first sentence This SSA has beenis executed subject to thea condition precedent that no later than by the Storage Customer presents the SSA with a Transmission Ability Allocation representing a(in the form of a printout from the Information Exchange System / IES where it is to be executed in accordance with the provisions of the TNC, signed for confirmation by the Applicant) making part of athe Transmission Contract concludedexecuted by the Storage Customer with the TSO, which will confirm and confirming the undertakingcommitment of the TSO totowards the Storage Customer to deliver or offtake the quantitiesvolumes of Gaseous Fuel contemplated in under this SSA to, or take the same from Storage Facilities or to or from the GroupGroups of Storage Facilities is presented to the SSO by the Storage Customer (either as the original, or as a notarised copy or a photocopy certified to be true to the original by a solicitor or advocate, or by duly authorised representatives of the Storage Customer) by (the ( Condition Precedent ). This SSA has beenis executed subject to thea condition precedent that no later than by the Storage Customer presents the SSA with a Transmission Ability Allocation representing a(in the form of a printout from the Information Exchange System / IES where it is to be executed in accordance with the provisions of the TNC, signed for confirmation by the Applicant) making part of athe Transmission Contract concludedexecuted by the Storage Customer with the TSO, which will confirm and confirming the undertakingcommitment of the TSO totowards the Storage Customer to deliver or offtake the quantitiesvolumes of Gaseous Fuel contemplated in under this SSA to, or take the same from Storage Facilities or to or from the GroupGroups of Storage Facilities is presented to the SSO by the Storage Customer (either as the original, or as a notarised copy or a photocopy certified to be true to the original by a solicitor or advocate, or by duly authorised representatives of the Storage Customer) by (the ( Condition Precedent ). Acting on behalf of ( Applicant ), in connection with the application for/conclusion of * 1 athe Storage Services Agreement ( SSA ) dated, we, as the owner of the Gaseous Fuel which is to be/has been* injected into the Storage Facility or Group of Storage Facilities under the SSA, I hereby: 1 *delete if not applicable 15

87. Appendix 12 tittle of the declaration STANDARD FORM DECLARATION CONTAINING THE OFFER TO SELL GAS TOGETHER WITH AUTHORISATION FOR THE SSO TO HOLD THE SALE PROCEDURE (to be presented by the owner of Gaseous Fuel other than the Applicant or Storage Customer) 88. Appendix 12 change Acting on behalf of, NIP: ( Owner ), in connection with : 1) the application of ( Applicant ) dated for the conclusion of a Storage Services Agreement ( SSA ) for the term, period of in the Storage Facility or Group of Storage Facilities, 2) the purchase of Gaseous Fuel in the amount of kept in the Storage Facility or in the Group of Storage Facilities under the Storage Services Agreement concluded on year for the period of ( SSA ) with ( Storage Customer ), *. as the owner of the Gaseous Fuel that is to be/has been* injected tointo the Storage Facility or tointo the Group of Storage Facilities and held therein, under the SSA: we hereby: I. express our consent to the execution of the SSA by the Applicant,*, II. present an irrevocable offer to sell theany Gaseous Fuel that willis to be/ has been* injected to the Storage Facility or Group of Storage Facilities under the SSA contemplated in the application and will not have been withdrawn by the Applicant from the same facility or group of facilities despite the expiry or termination of the SSA, provided that Key: strikethrough text in red denotes deleted content underlined text in blue denotes added content double strikethrough text in green denotes moved content text in black denotes the current content as per the wording of the Rules of 18 June 2014 (as amended) consolidated text published of 6 April 2018 16