Common use of Place, date Clause in Contracts

Place, date. OTE, a.s.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Chairman of the Board ................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP / 17 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible Party: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Contractual +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 4: Examples of calculation formulas for data included in tax documents Example 1: VAT base and calculation – payment in EUR (exclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% CNB exchange rate on the date of supply: 25,000 Example 2: VAT base and calculation – payment in EUR (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas supply by the Balance Responsible Party; • VAT base is the sum of the adjusted price for gas supply without VAT quoted in CZK and the rate of Gas Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the price (payment) for gas supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTE’s bank exchange rate: 24,500 Example 4: VAT base and calculation – payment in CZK (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the sum of the price for gas supply without VAT quoted in CZK and the Gas Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE’s bank exchange rate: 24,500 In the event the price for imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%

Place, date. OTEXXX, a.sx.x.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Xxxxxx Xxxxxx Chairman of the Board ................................................. .................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP B 000 / 17 21 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible PartyTrader: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Contractual +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational Xxxxxxxx Smluvní +000 000 000 000 xxxxxxxxx@xxx-xx.xx +0 00 000 000 000 Xxxxxxxx Xxxxxxx Contractual, CS OTE +000 000 000 000 Pavel Rodryč xxxxxxxx@xxx-xx.xx +000 000 000 000 Xxxxx Xxxx Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx xxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Xxxxxx Xxxxxxx Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 43: Examples Exhibits of calculation formulas for data included in tax documents Example Exhibit 1: VAT base and calculation – payment in EUR (exclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas electricity supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas electricity supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas electricity supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% • VAT is calculated from the VAT base quoted in CZK Calculation formula: CNB exchange rate on the date of supply: 25,000 Example Exhibit 2: VAT base and calculation – payment in EUR (inclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas electricity supply by the Balance Responsible PartyTrader; • VAT base is the sum of the adjusted price for gas electricity supply without VAT quoted in CZK and the rate of Gas Electricity Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Electricity Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% • VAT is calculated from the VAT base quoted in CZK. Calculation formula: CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTEthe Market Operator’s bank valid for the relevant supply; • VAT base is the price (payment) for gas electricity supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTEMarket Operator’s bank exchange rate: 24,500 Example Exhibit 4: VAT base and calculation – payment in CZK (inclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTEthe Market Operator’s bank valid for the relevant supply; • VAT base is the sum of the price for gas electricity supply without VAT quoted in CZK and the Gas Electricity Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Electricity Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE• VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: Market Operator’s bank exchange rate: 24,500 In the event the price for of imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%% VAT in CZK - rounded 7 440,61

Place, date. OTE, a.s.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Chairman of the Board ................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP 000 / 17 16 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible Party: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Contractual +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 4: Examples of calculation formulas for data included in tax documents Example 1: VAT base and calculation – payment in EUR (exclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% CNB exchange rate on the date of supply: 25,000 Example 2: VAT base and calculation – payment in EUR (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas supply by the Balance Responsible Party; • VAT base is the sum of the adjusted price for gas supply without VAT quoted in CZK and the rate of Gas Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the price (payment) for gas supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTE’s bank exchange rate: 24,500 Example 4: VAT base and calculation – payment in CZK (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the sum of the price for gas supply without VAT quoted in CZK and the Gas Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE’s bank exchange rate: 24,500 In the event the price for imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%

Place, date. OTE, a.s.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Chairman of the Board ................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP / 17 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible Party: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Xxxxxxxx Contractual +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx xxxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Jakub Šrom Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx xxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 4: Examples of calculation formulas for data included in tax documents Example 1: VAT base and calculation – payment in EUR (exclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% CNB exchange rate on the date of supply: 25,000 Example 2: VAT base and calculation – payment in EUR (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas supply by the Balance Responsible Party; • VAT base is the sum of the adjusted price for gas supply without VAT quoted in CZK and the rate of Gas Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the price (payment) for gas supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTE’s bank exchange rate: 24,500 Example 4: VAT base and calculation – payment in CZK (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the sum of the price for gas supply without VAT quoted in CZK and the Gas Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE’s bank exchange rate: 24,500 In the event the price for imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%

Place, date. OTE, a.s.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Xxxxxx Xxxxxx Chairman of the Board ................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP / 17 21 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible Party: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Zuzana Stašková Contractual +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx xxxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Jakub Šrom Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx xxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 4: Examples of calculation formulas for data included in tax documents Example 1: VAT base and calculation – payment in EUR (exclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% CNB exchange rate on the date of supply: 25,000 Example 2: VAT base and calculation – payment in EUR (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas supply by the Balance Responsible Party; • VAT base is the sum of the adjusted price for gas supply without VAT quoted in CZK and the rate of Gas Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the price (payment) for gas supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTE’s bank exchange rate: 24,500 Example 4: VAT base and calculation – payment in CZK (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the sum of the price for gas supply without VAT quoted in CZK and the Gas Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE’s bank exchange rate: 24,500 In the event the price for imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%

Place, date. OTEXXX, a.sx.x.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Xxxxxx Xxxxxx Chairman of the Board ................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP / 17 21 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible Party: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Xxxxxxxx Contractual +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx xxxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Xxxxx Xxxxxxxx Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Xxxxx Xxxx Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx xxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Xxxxxx Xxxxxxx Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 4: Examples of calculation formulas for data included in tax documents Example 1: VAT base and calculation – payment in EUR (exclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% CNB exchange rate on the date of supply: 25,000 Example 2: VAT base and calculation – payment in EUR (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas supply by the Balance Responsible Party; • VAT base is the sum of the adjusted price for gas supply without VAT quoted in CZK and the rate of Gas Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the price (payment) for gas supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTE’s bank exchange rate: 24,500 Example 4: VAT base and calculation – payment in CZK (inclusive of Gas Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTE’s bank valid for the relevant supply; • VAT base is the sum of the price for gas supply without VAT quoted in CZK and the Gas Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE’s bank exchange rate: 24,500 In the event the price for imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%

Place, date. OTE, a.s.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Xxxxxx Xxxxxx Chairman of the Board ................................................. .................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP B 000 / 17 21 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible PartyTrader: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Contractual Zuzana Stašková Smluvní +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx xxxxxxxxx@xxx-xx.xx +0 00 000 000 000 Jaroslav Hodánek Contractual, CS OTE +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Šrom Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx xxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 43: Examples Exhibits of calculation formulas for data included in tax documents Example Exhibit 1: VAT base and calculation – payment in EUR (exclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas electricity supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas electricity supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas electricity supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% • VAT is calculated from the VAT base quoted in CZK Calculation formula: CNB exchange rate on the date of supply: 25,000 Example Exhibit 2: VAT base and calculation – payment in EUR (inclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas electricity supply by the Balance Responsible PartyTrader; • VAT base is the sum of the adjusted price for gas electricity supply without VAT quoted in CZK and the rate of Gas Electricity Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Electricity Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% • VAT is calculated from the VAT base quoted in CZK. Calculation formula: CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTEthe Market Operator’s bank valid for the relevant supply; • VAT base is the price (payment) for gas electricity supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTEMarket Operator’s bank exchange rate: 24,500 Example Exhibit 4: VAT base and calculation – payment in CZK (inclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTEthe Market Operator’s bank valid for the relevant supply; • VAT base is the sum of the price for gas electricity supply without VAT quoted in CZK and the Gas Electricity Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Electricity Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE• VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: Market Operator’s bank exchange rate: 24,500 In the event the price for of imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%% VAT in CZK - rounded 7 440,61

Place, date. OTE, a.s.: Company Name: .................................................. .................................................. Ing. Aleš Tomec Chairman of the Board ................................................. .................................................. Ing. Xxxxxx Xxxxxx Vice-chairman of the Board .................... ........................... Agreement Registration Number: AP B 000 / 17 16 Appendix 3: Persons authorized for communication in contractual and operations matters On behalf of the Balance Responsible PartyTrader: First Name Surname Telephone Mobile phone E-mail Person in charge Access to OTE's system Commodity Communication areas Notes: Person in charge has rights to administrate others persons accounts in OTE portal, e.g.: add new user, edit activity rights, manage certificates. Communication area with OTE, please fill up for each person according to the following key: C - contractual, O - operational, I - invoicing, RM - risk management. On behalf of OTE, a.s.: First Name Surname Scope of Communication Telephone E-mail Mobile phone Xxxxxx Stejskalová Contractual Zuzana Stašková Smluvní +000 000 000 000 xxxxxxxxxxxx@xxx-xx.xx xxxxxxxxx@xxx-xx.xx +0 00 000 000 000 Jaroslav Hodánek Contractual, CS OTE +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Jakub Nečesaný Operational +000 000 000 000 xxxxxxxxx@xxx-xx.xx +000 000 000 000 Pavel Rodryč Šrom Short-Term Market +000 000 000 000 xxxxxxx@xxx-xx.xx xxxxx@xxx-xx.xx +000 000 000 000 Ondřej Záviský Billing, Financial Security +000 000 000 000 xxxxxxxx@xxx-xx.xx +000 000 000 000 Appendix 43: Examples Exhibits of calculation formulas for data included in tax documents Example Exhibit 1: VAT base and calculation – payment in EUR (exclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • VAT base in EUR is the price for gas electricity supply without VAT quoted in EUR; • VAT in EUR is calculated in EUR from the VAT base quoted in EUR; • The price for gas electricity supply without VAT quoted in EUR is converted using the exchange rate of the Czech National Bank valid on the date of gas electricity supply by the Trade • VAT is calculated from the VAT base quoted in CZK Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax in EUR 6 300 30 000*21% Tax base in CZK 750 000 30 000*25,000 VAT in CZK 157 500 750 000*21% • VAT is calculated from the VAT base quoted in CZK Calculation formula: CNB exchange rate on the date of supply: 25,000 Example Exhibit 2: VAT base and calculation – payment in EUR (inclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in EUR, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of the Czech National Bank valid for OTE on the date of gas electricity supply by the Balance Responsible PartyTrader; • VAT base is the sum of the adjusted price for gas electricity supply without VAT quoted in CZK and the rate of Gas Electricity Tax in CZK; • VAT is calculated from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 750 000 30 000*25,000 Gas Electricity Tax in CZK 10 000 x MWh*28,30 VAT base in CZK 760 000 750 000 + 10 000 VAT in CZK 159 600 760 000*21% • VAT is calculated from the VAT base quoted in CZK. Calculation formula: CNB exchange rate on the date of supply: 25,000 In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTEthe Market Operator’s bank valid for the relevant supply; • VAT base is the price (payment) for gas electricity supply without VAT quoted in CZK; • VAT is calculated in CZK from the VAT base, exclusive of the VAT rate, quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Tax base in CZK 735 000 30 000*24,500 VAT in CZK 000 000 000 000*21% Total amount due in CZK 889 350 OTEMarket Operator’s bank exchange rate: 24,500 Example Exhibit 4: VAT base and calculation – payment in CZK (inclusive of Gas Electricity Tax) In the event the offer price is quoted in EUR and payment is executed in CZK, the calculation procedure is as follows: • The offer price quoted in EUR is converted using the exchange rate of OTEthe Market Operator’s bank valid for the relevant supply; • VAT base is the sum of the price for gas electricity supply without VAT quoted in CZK and the Gas Electricity Tax rate in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: EUR CZK Calculation Offer price in EUR 30 000 Offer price in CZK 735 000 30 000*24,500 Gas Electricity Tax in CZK 10 000 xMWh*28,30 Tax base in CZK 745 000 735 000 + 10 000 VAT in CZK 000 000 000 000*21% OTE• VAT is calculated in CZK from the VAT base quoted in CZK. Calculation formula: Market Operator’s bank exchange rate: 24,500 In the event the price for of imbalance is quoted in CZK and payment is executed in CZK, the calculation procedure is as follows: • VAT base is the price for imbalance in CZK; • VAT is calculated in CZK from the VAT base quoted in CZK; • VAT is rounded to hallers. Calculation formula: EUR CZK Calculation Price for imbalance in CZK 35 431,48 VAT in CZK 7 440,611 35 431,48*21%% VAT in CZK - rounded 7 440,61