National Electrification Indaba 16 March 2012 Electrification Technical

National Electrification Indaba 16 March 2012 Electrification Technical Aspects Nomvula Kungwane

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

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

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

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

BACKLOGS: EC; KZN & LIMPOPO PROVINCE TOTAL NUMBER OF HOUSEHOLDS BACKLOG (with growth) Backlog (%) EASTERN CAPE 1, 683, 420 647, 593 19% KWAZULU NATAL 2, 439, 751 816, 354 24% LIMPOPO 1, 264, 792 322, 172 9% . . . . TOTAL NATIONAL 12, 860, 165 3, 440, 699 100%

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

KZN BACKLOGS OVERVIEW

KZN NETWORK STATUS

SUBSTATIONS REQUIRED

Bulk Infrastructure Movement - Last 3 years • Completed Mandabeni; Nyokeni; Sgananda ka. Zokufa Shezi; Msinga; Hlabisa; Dlangezwa; Pomeroy • Under Construction Kenterton; u. Mzumbe; Ndwedwe; Mathondwane; Ladysmith; Corinth; Umzimkhulu • *Bulk Infrastructure Focus Areas Umkhanyakude; Ndumo; Gezisa, Mbazwana; Hlabisa; Gunjaneni; Ntambanana; Melmoth East; Mandini; ; Mangethe; u. Mshwathi; Applesbosch; u. Mzumbe; Kwa. Xolo/Kwa. Deshula • *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

Eastern Cape 13

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

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

Limpopo 16

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

Bulk Infrastructure Development Pontdrif Messina Leeudraai Venetia Thohoyandou New MTS Sanari Mandala Makhado Coal Rio. Tinto Coal Njelele. T 2015/16 Tshilamba Makonde 2015/16 Paradise Soutpan Flurian Bochum Louis Trich Ribolwa Singo Dendron 2011/12 Botlokwa Tabor 2012/13 2011/12 Muledani Mashau Venulu Mamaila 2013/14 Mbahe 2013/14 Malamulele Phugwane 2011/12 2012/13 Hlanganani Giyani Thomo Bendstore 2011/12 Magpot Soekmekaar Spencer Mooketsi Polokwane Mhinga Thulamela Tshikeweta Bolubedu 2013/14 Tzaneen Mageva Mamitwa Witkop Tarentaal 18

Limpopo Bulk Infrastructure: 2010 -2015 Item Project Name Municipality 1 Singo Substation Makhado 2 Mashau substation Makhado 2 x 20 MVA Substation 132/22 k. V 250 M 132 k. V Line – Kingbird 3 (Jilongo ) Thulamela Phugwane substation Lambani (Mhinga) Thulamela Substation 2 x 20 MVA Substation 132/22 k. V 35 k. M 132 k. V Line – Kingbird Mbahe Substation Thulamela 2 x 20 MVA Substation 132/22 k. V 2 k. M 132 k. V Line – Kingbird 4 5 Scope 2 x 20 MVA Substation 132/22 k. V 37 k. M 132 k. V Line – Kingbird 2 x 20 MVA Substation 132/22 k. V 30 k. M 132 k. V Line – Kingbird

Limpopo Bulk Infrastructure: 2010 -2015 Item Project Name Municipality 6 Tshilamba Substation Mutale 7 Mamaila Substation Greater Letaba 8 Mageva Substation Greater Letaba 2 x 20 MVA Substation 132/22 k 37 k. M 132 k. V Line – Chickadee 9 Mamatsekele Substation Lepelle Nkumpi 2 x 20 MVA Substation 132/22 k. V 37 k. M 132 k. V Line – Kingbird Polokwane 10. Rampheri Substation Scope 2 x 20 MVA Substation 132/22 k. V 10 k. M 132 k. V Line – Kingbird 2 x 20 MVA Substation 132/22 k. V 16 k. M 132 k. V Line – Kingbird 2 x 10 MVA Substation 132/11 k. V 30 k. M 132 k. V Line – Kingbird

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

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 Do. E & Human settlements • Eskom supplementary funding of infill connections and some infrastructure projects