Saudi Arabian Grid Code May 2024

Transmission System Forecasts 4.2.5.1 The following factors will be taken into account by the TSP when conducting Demand Forecasts in the Programming Phase and Control Phase: Chapter 4 - Operating Code The Saudi Arabian Grid Code Updated Version: May 2024 (i) historic Demand data including Transmission System losses; (ii) socioeconomic growth projections of the country; (iii) weather forecasts and the current and historic weather conditions; (iv) the incidence of major Events or activities which are known to the TSP in advance; (v) Embedded Generating Unit/Station Schedules; (vi) Demand Control of five (5) MW or more proposed to be exercised by Distribution Entities and Directly-connected Customers and of which the TSP has been informed; and (vii) other information supplied by the Users. 4.2.5.2 The TSP will prepare unbiased forecasts of the Transmission System Demand using a sound forecast methodology which will take into account the above factors to the maximum possible extent. Outage Planning 4.3.1 Introduction 4.3.1.1 This section specifies conditions, requirements, and procedures that the TSP and Users shall follow to match Generation Capacity with Forecast Demand on the Transmission System over various operational planning horizons in order to achieve, to the maximum possible degree, the Reliability and Security standards expected of the TSP. 4.3.1.2 The section mainly concens with the following: (i) the planning, coordination, and approval of scheduled and un- scheduled Outages of the Generating Unit and the Transmission System; and (ii) the provision of planning parameters to the TSP by Generators for operational planning purposes only. 4.3.1.3 The provisions of this section shall apply to all proposed Outages that may affect the ability of a Generating Unit to achieve its full Registered Capacity appropriate to each Registered Fuel in accordance with its Registered Operating Characteristics. 4.3.1.4 This section also mandates the Generators to inform the TSP of any other proposed maintenance of a Generating Unit or any associated Power Station Plant or Apparatus, which can affect the availability of System Services from that Generating Unit. Chapter 4 - Operating Code The Saudi Arabian Grid Code Updated Version: May 2024 4.3.1.5 In complying with the various provisions of this section, each Grid Participant shall act reasonably, in good faith, and in accordance with Good Industry Practices when planning Outages for its own system and also when coordinating the scheduling of these Outages with those of the others. This will be imperative to avoid a situation arising in which a Participant is obliged to request an Outage during the Outage Planning process as a consequence of that Participant’s not having planned its Outages in accordance with Good Industry Practice. 4.3.2 Definitions In this section, a reference to Year 0 shall mean the current calendar year, Year 1 shall mean the next calendar year, Year 2 shall mean the calendar year after Year 1, and so forth. 4.3.3 Objective The key objective of Outage Planning is to promote the developing and implementing of an orderly Generation and Transmission Outage Program that is consistent with reliable and secure operation of the Transmission System, and also addresses the needs of the Generators for Plant maintenance and resource limitations. In specific, to define the following: (i) the procedure for formal notification of Outages by Generators to the TSP; and (ii) the procedures that the TSP will use to prepare, review, and notify the Indicative, Provisional, and Committed Outage Programs for the Grid.