Transmission Ten-Year Development Plan 2011-2020 - Eskom

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i Foreword by Divisional Executive A reliable supply of electricity is essential for South Africa’s economy to grow and generate the additional job opportunities that our people so desperately need. A reliable Transmission network of adequate capacity to meet the country’s needs is a necessary condition for the provision of a reliable electricity supply to South Africa, and to support the Government’s initiatives to create jobs. The Transmission network does not only require regular preventative maintenance and timeous repair of faults to remain reliable, but it must be developed and extended as well to meet the increasing demands made upon it; or alternatively connect new loads and power stations should be connected to the network. The National Energy Regulator of South Africa (NERSA) has published, in the Grid Code; the rules governing investment in the Transmission network. Eskom, as the licensed Transmission Network Service Provider plans the network according to this Code and, subject to funding and other resource constraints, builds the network according to these plans. Where sufficient funds are not available to develop the network, a consistent set of rules is applied to prioritise projects and allocate funding in such a way that the maximum benefit is gained for South Africa. The Transmission Development Plan for the period 2011 to 2020 is the third such plan that is being published in the public domain. It follows on the second such plan published in 2010. The major focus of the plans continues to ensure that the new power stations Transmission Ten-Year Plan 2011-2020 are integrated into the national power system and that there is minimum infrastructure to meet prescribed reliability criteria. Funding constraints mean that the time it will take to meet the full requirements of the Grid Code could be as late as 2020 . We estimate that, in nominal terms, an investment of R166 billion is required to the end of the financial year 2020. This is a significant investment on its own if one compares it to what is needed for transport and water projects. These investments already consider constraints in funding and resource availability as they have ideally been accelerated. These investments will result in the reliability standards only being completely met in the period 2015 to 2020. It is clear that electricity is the lifeblood of South Africa’s economy and hence there is a need for the country to understand what is required to ensure a reliable and secure supply and what investment levels are required to achieve it. We hope that this document will assist in this dialogue, and we welcome comments and queries on the content and format. We would also like to take this opportunity to thank the team that has worked and continues to work on the development of these plans. It is a difficult and complex process which requires extensive consultation and multiple iterations. Kind regards Mongezi Ntsokolo
Disclaimer The purpose of publishing the Transmission Ten-year plan is to inform stakeholders about the proposed developments in the Eskom transmission network. These plans are subject to change as and when better technical solutions are identified or when more accurate developmental information becomes available. The information contained in Transmission’s Ten-year plan should therefore not be used for any other purpose other than sharing of information. The contents of this document do not constitute advice and Eskom makes no representations regarding the suitability of the information contained in this document to be used for any purpose. All such information is provided “as is” without warranty of any kind and is subject to change without notice. The entire risk arising out of its use remains with the recipient. In no event Executive Summary Eskom Holdings is a vertically integrated company licensed to generate, transmit, and distribute electricity in South Africa. The Transmission Division of Eskom Holdings is tasked with the responsibility of developing the transmission network. The publication of the Transmission Ten-year plan is to inform stakeholders about Eskom’s plans with regard to the development of the transmission network. This publication fulfils the requirements of the South African Grid Code, which requires the Transmission Network Service Provider (TNSP) to annually publish plans on how the network will develop. This is the third publication of the Transmission Ten-year plan. A public forum will be held with identified stakeholders to further disseminate and get feedback about the contents herein. These comments will be taken into account when the plan is revised. This publication contains projects intended to extend or reinforce shall Eskom be liable for any direct, consequential, incidental, special, punitive, or any other damages whatsoever, including, but not limited to damages for loss of business profits, business interruption, or loss of business information. While the Transmission Ten-year plan is updated periodically, Eskom makes no representation or warranty as to the accuracy, reliability, validity, or completeness of the information in this document. Eskom does, however, endeavour to release plans based on the best available information at its disposal at all times to ensure that the stakeholders are kept informed about the developments in the transmission network. Thus, the information contained in this document represents the most up-to-date information that was available at the time it was released. the transmission system that have been completed in the past year as well as projects that are planned for the next ten years. The transmission network is the primary network of interest covered in this publication. This covers electrical networks with voltages ranging from 220 kV to 765 kV and the transmission substations where these networks terminate. A few 88 kV and 132 kV electrical networks are included due to their strategic nature. © Eskom 2011 ii
Page 1: Public Version Transmission Ten-Yea
Page 5 and 6: Table of Contents FOREWORD BY DIVIS
Page 7 and 8: LIST OF TABLES Table 4.1: Connectio
Page 9 and 10: 1. Introduction 1.1 CONTEXT OF THE
Page 11 and 12: Figure 2.1: The Eskom Transmission
Page 13 and 14: of 100MW which represent a cumulati
Page 15 and 16: Potential imported power projects w
Page 17 and 18: 3.2 GENERATION ASSUMPTIONS The majo
Page 19 and 20: 5. National Overview The map in Fig
Page 21 and 22: horizon of the TDP up until 2030. T
Page 23 and 24: CLN Actual Peak Load 2009 (MW) Fore
Page 25 and 26: Johannesburg East Strengthening con
Page 27 and 28: 6.1.4 VAAL CN This CLN consists of
Page 29 and 30: The increase in transmission assets
Page 31 and 32: Figure 6.4: East Grid geographical
Page 33 and 34: The Northern Grid load growth is ma
Page 35 and 36: 6.3.2 RUSTENBURG CLN Rustenburg CLN
Page 37 and 38: 6.4 NORTH EAST GRID The North East
Page 39 and 40: Highveld North Reinforcement • Ro
Page 41 and 42: A network diagram showing the major
Page 43 and 44: The next stage of the reinforcement
Page 45 and 46: A network diagram showing the major
Page 47 and 48: The TDP schemes for the South Grid
Page 49 and 50: 6.6.3 KAROO CLN For the current net
Page 51 and 52: 6.7 WEST GRID The West Grid consist
Page 53 and 54:
Cape Corridor 765kV - Phase 4 • C
Page 55 and 56:
A diagram showing the major project
Page 57 and 58:
Type Total R’mil Customer 6,100 G
Page 59 and 60:
Appendix A: Generation Assumptions
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APPENDIX B3A: COSTING FOR CENTRAL G
Page 63 and 64:
APPENDIX B3C: COSTING FOR WEST GRID
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APPENDIX B3E: COSTING FOR NORTH-EAS
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APPENDIX B3G: COSTING FOR NORTH GRI
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Notes © Eskom 2011 61
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Notes © Eskom 2011 63
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Transmission Ten-Year Development Plan 2011-2020 - Eskom

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