Allocation of capacities between Portugal and Spain Madrid 30 th April 2013

2 Products and Auctions 4 types of Capacity Products, sold through 4 Auctions ProductsAuctions Firm Yearly Products*Firm Yearly Products Auction Firm Quarterly Products*Firm Quarterly Products Auction Interruptible Yearly Products**Interruptible Yearly Products Auction Interruptible Quarterly Products**Interruptible Quarterly Products Auction (*) Include the two flow directions: from Portugal to Spain (POR  ESP) and from Spain to Portugal (ESP  POR). (**) Include the flow directions: from Spain to Portugal (ESP  POR).

3 Capacities offered in the auction process

4 Monthly available capacities NOT offered through the Auction Process (MWh/day)

5 Information Memorandum – contents (I) 1.Background Auctions 3.Description of capacity Products 1.Bundled Capacity 2.Virtual Interconnection Point 3.Products 4.Units and reference conditions 4.Qualification Process 1.Pre-qualification Phase 2.Qualification Phase for firm Yearly Products Auction 3.Qualification Phase for firm Quarterly Products Auction 4.Capacity Application Guarantees 5.Capacities offered 1.Existing contracts 2.Calculation of capacities calendar 7.Auction Process 1.General principles 2.Bidding Windows 3.Bidding Forms 4.Allocation Methodology 5.Emergency Procedure

6 Information Memorandum – contents (II) 8.Obligations of the entities in charge of supervising and organizing the auctions 1.Auctions supervision 2.Auctions organization 9.Price 1.Regulated tariff 2.Auction premium 3.Revenue split: capacity premium payments 10.Transfer of capacity in the secondary market 11.Other 1.Fee to cover the auction costs 2.Interoperability issues 3.Gas day 4.Anti-hoarding mechanism 5.Allocation of spare capacities at the VIP after the Auction Process 6.Invalidity of an Article 12.Coordinated Auction Office Appendixes

7 Information Memorandum Appendices 1.Pre-qualification Form to participate the Auction Process 2.Agreement to participate in the Auction Process 3.Confidentiality and Non-collusion Agreement 4.Statement of Single Shipper per companies belonging to the same group 5.TSO’s Adhesion Agreement 6.Enagás Standard Contract 7.REN Standard Contract 8.Enagás First Demand Bank Guarantee model 9.REN First Demand Bank Guarantee model 10.Qualification Form for the Firm Yearly Products Auction 11.Qualification Form for the Firm Quarterly Products Auction 12.Bidding Form for the Firm Yearly Products Auction 13.Bidding Form for the Firm Quarterly Products Auction 14.Bidding Form for the Interruptible Products Auctions Documentation

8 Qualification Process In order to participate in an Auction, Shippers shall be accredited as Qualified Shippers for that Auction. The Qualification Process will include two phases: 1.the Pre-qualification Phase, common to all Auctions to be held in 2013, and 2.the Qualification Phase, only required for firm products Auctions. Pre- qualification Phase Qualification Phase Auction

9 Pre- qualification Phase Common to all Auctions Qualification Phase for firm Yearly Products Auction Firm Yearly Products Auction Qualification Phase for firm Quarterly Products Auction Firm Quarterly Products Auction Interrumptible Products Auctions (Yearly & Quarterly) 3 rd -7 th June 13 th -24 th June 27 th -28 th June 3 rd -12 th July 16 th -17 th July 22 nd -23 rd July 2013 Auctions

10 Tentative calendar (I)

11 Tentative calendar (II)

12 Main changes regarding 2012’s auction process Main differences on the provisions set in the Information Memorandum for this year’s auction process (document still subject to approval by NRAs): 1.Quarterly capacity products to be offered instead of monthly capacity products 2.Process to take place during the months of June and July with an extended time for both qualification phases (10 working days) 3.Minimum bid of 100 MWh/day will be accepted at each auction 4.Capacity not allocated after the auction process will be offered as monthly or daily capacity products in a First-Come-First-Served basis

Thank you for your attention!