1. National Electrification Indaba 16 March 2012 Electrification Technical Aspects Nomvula Kungwane

2. CONTENT Connections History Background Impact on Electrification KZN; EC and Limpopo infrastructure 2 Backlogs, EC; KZN and Limpopo Designs Conclusion

3. BACKGROUND Urban electrification was largely done in the past un-electrified households in urban areas are mostly growth & informal settlements Easy-to-execute projects were also done during the massive electrification program of the past Reality now: Difficulty to implement electrification projects without bulk infrastructure development rural electrification with high costs Funds are stretched to address both bulk infrastructure and household connections

4. IMPACT Less connections achievable There is a continuous need for the integration of the Electrification programme with Eskom’s Capital programme across Eskom divisions, esp. Transmission and Distribution example on planned infrastructure projects in the Eastern Cape, below

5. DESIGNS Changed from designing for initial ADMD to final ADMD designs and implementation Cheap designs = high maintenance costs Designs have evolved over the years, with mid-block (cheaper but difficult to reach for maintenance) and street-front SWER & dual-phase networks have been changed for 3-phase networks to accommodate future growth Split Metering technology implemented in some areas, to curb tempering it is necessary to ensure that poles, conductor, and line hardware incorporated in existing designs are used optimally - spans should be maximized Optimisation of designs for rural networks: installation of MV and LV conductors on the same poles/line

6. CONNECTIONS HISTORY PROVINCE BACKLOG (with growth) Backlog (%) KWAZULU NATAL816,35424% GAUTENG779,75423% EASTERN CAPE647,59319% LIMPOPO322,1729% MPUMALANGA227,4797% WESTERN CAPE202,1256% FREE STATE199,6256% NORTH WEST195,8026% NORTHERN CAPE49,7941% TOTAL3,440,699100%

7. PROVINCETOTAL NUMBER OF HOUSEHOLDS BACKLOG (with growth) Backlog (%) EASTERN CAPE1,683,420647,59319% KWAZULU NATAL2,439,751816,35424% LIMPOPO1,264,792322,1729%................ TOTAL NATIONAL12,860,1653,440,699100% BACKLOGS: EC; KZN & LIMPOPO

8. NATIONAL ELECTRIFICATION BACKLOG KZN 24% LIMPOPO 9% GAUTENG MPUMALANGA 7% NORTH WEST 6% FREE STATE 6% NORTHEN CAPE 1% WESTERN CAPE 6% EASTERN CAPE 19%

9. KZN BACKLOGS OVERVIEW

10. KZN NETWORK STATUS

11. SUBSTATIONS REQUIRED

12. Bulk Infrastructure Movement - Last 3 years Completed Mandabeni; Nyokeni; Sgananda kaZokufa Shezi; Msinga; Hlabisa; Dlangezwa; Pomeroy Under Construction Kenterton; uMzumbe; Ndwedwe; Mathondwane; Ladysmith; Corinth; Umzimkhulu *Bulk Infrastructure Focus Areas Umkhanyakude; Ndumo; Gezisa, Mbazwana; Hlabisa; Gunjaneni; Ntambanana; Melmoth East; Mandini; ; Mangethe; uMshwathi; Applesbosch; uMzumbe; KwaXolo/KwaDeshula *These substations are for the sole purposes of rural electrification, there are other Substations planned to be built by Eskom which will also assist in electrification

13. Eastern Cape 13

14. Qunu Tyalarha Sappi Paynes Farm Mafini Kohlo Qumbu Ugie Dumasi Magwa Siphaqeni Wiloi 1 st Falls EXISTING NETWORK

15. PROJECTS FOR 2012/13/14 Qunu Tyalarha Sappi Paynes Farm Mafini Kohlo Qumbu Ugie Dumasi Magwa 132kV line to Hombe S/S and 2 x 10MVA 132/22kV Hombe s/s (R) Sappi/Elliot 132kV line and 1 x 40MVA 132/66kV Elliot substation (S) Elliot/Ugie 132kV line (RR) Decomission old 66kV line and associated substations (R) 132kV link line (16km) 2 x 20MVA 132/22kV Tombo s/s (S) 132kV line (30km) 2 x 20MVA 132/22kV Mfinizo s/s (DoE) 132kV line (30km) 2 x 20MVA 132/22kV Taweni s/s (DoE) 2nd 20MVA 132/22kV Qumbu S/S Trfr (RR) 4 132kV feeder bay (S) Vuyani/Zimbane 1 132kV line; Vuyani/Zimbane 2 132kV line Vuyani/Mafini 132kV line; Vuyani/Qunu 132kV line 2 x 10MVA 132/22kV Mjika s/s 132kV link lines (4km) – (S) 132kV link line (2km) 2 x 20MVA 132/22kV Mafini s/s (S) VUYANI MTS PROJECT Eros/Vuyani 400kV line, 3 x 250MVA 400/132kV Vuyani Substation (S) Zimbane/Paynes 132kV line & 2 x 20MVA 132/22kV Paynes Farm S/S Paynes Farm/Sappi 132kV lines & 2 x 20MVA 132/22kV Sappi S/S (S) Qolweni/Hlobo and Hlobo/Vuyani 132kV line, 2 x 20MVA 132/22kV Hlobo S/S (S)

16. Limpopo 16

17. LIMPOPO PROVINCE Network Status 17 Red – Network constrained Yellow – Limited capacity on large parts of network Green – Capacity Available

18. 18 Bulk Infrastructure Development Thohoyandou Tzaneen Polokwane

19. Limpopo Bulk Infrastructure: 2010-2015 ItemProject NameMunicipalityScope 1Singo SubstationMakhado  2 x 20MVA Substation 132/22kV  37kM 132kV Line – Kingbird 2Mashau substationMakhado  2 x 20MVA Substation 132/22kV  250M 132kV Line – Kingbird 3(Jilongo ) Phugwane substation Thulamela  2 x 20MVA Substation 132/22kV  35kM 132kV Line – Kingbird 4Lambani (Mhinga) Substation Thulamela  2 x 20MVA Substation 132/22kV  30kM 132kV Line – Kingbird 5Mbahe SubstationThulamela  2 x 20MVA Substation 132/22kV  2kM 132kV Line – Kingbird

20. Limpopo Bulk Infrastructure: 2010-2015 ItemProject NameMunicipalityScope 6Tshilamba Substation Mutale  2 x 20MVA Substation 132/22kV  10kM 132kV Line – Kingbird 7Mamaila Substation Greater Letaba  2 x 20MVA Substation 132/22kV  16kM 132kV Line – Kingbird 8Mageva SubstationGreater Letaba  2 x 20MVA Substation 132/22k  37kM 132kV Line – Chickadee 9Mamatsekele Substation Lepelle Nkumpi  2 x 20MVA Substation 132/22kV  37kM 132kV Line – Kingbird 10.Rampheri Substation Polokwane  2x10MVA Substation 132/11kV  30kM 132kV Line – Kingbird

21. CHALLENGES Land acquisition for infrastructure projects Significant footprint of Protected trees Illegal connections resulting in overloaded networks Public fatalities (Bambamenchies; KaMhlushwa) Maintaining good technical performance of the network – balance service extension with network strengthening; refurbishment as well as normalisation Equipment theft: cables and transformers

22. CONCLUSSION Electrification requires focus from a financial and technical perspective in order to optimise costs and reach a bigger footprint The industry must work together to implement available technologies for access to energy Solutions for electrification should be custom made to avoid over and/or under-designs Harmonisation between DoE & Human settlements Eskom supplementary funding of infill connections and some infrastructure projects