1. 11 PUBLIC WORKS AND INFRASTRUCTURE DEVELOPMENT ENERGY & ELECTRICITY PROJECTS IN THE CENTRAL REGION Director: K.J Leepile SEPTEMBER 2011

2. Kwagga 275kV Njala 275kV Rietvlei 132kV Buffel 132kV Mabopane 33kV Hartbeespoort 33kV Hammanskraal 11kV Rooiwal PS Pretoria West PS Wildebees (future) Summerhill (future) Power Station Existing Infeed Station Future Infeed Station INFEED POINTS

3. TSHWANE LOAD PROFILE

4. Central Region (ASD)

5. 20 YEAR MASTERPLAN Gomsand Bulk Capacity project 2011/12 To keep as 100% back-up configuration by adding two 35MVA transformers from Wolmer and other two 35MVA transformers from Orchards. (Upgrade from 35MVA to 105MVA) To accommodate the future growth in the Central Region The total project cost: R33 million and project duration from 2010- 2013

6. CURRENT PROJECT START DATE COMM. DATE PROJECT COST WARDSPRIMARY PROJECT DESCRIPTION GOMSAND 132/11kV SUBSTATION 20102013R 33 mil 55 2,3,4,7 Upgrade from 35MVA to 105MVA TOTAL R 33 mil TOTAL MVA TO BE ADDED 70MVA CENTRAL WEST REGION

7. Bulk Capacity Backlogs

8. CURRENT PROJECTS 132/11kV SUBSTATION START DATE COMM. DATE PROJECT COST PRIMARY PROJECT DESCRIPTION NEW HATFIELD 20202022R 55mil Construct new 120MVA substation (developer) RIVER 20202022R 60 milTo be refurbished (HATFIELD S/S will de-load River in future) ZEBRA 20192021R 50mil Reconfigure from 100% backup to ARBC (Upgrade from 70MVA to 105MVA) TUNNEL 20152017R 40 mil Upgrade and extend the substation by adding the third transformer. Will keep the 100% back-up configuration. CAPITAL PARK 20252027R 50milUpgrade from 70MVA to 105MVA BOOM 20272029R 30mil Replace 20 MVA transformers and protection SAULSVILLE 20252027R 50mil Upgrade from 70MVA to 105MVA NEW LOTUS 20202022 R 55 mil Construct new 120MVA substation ATTERIDGEVILLE 20252027 R 50mil Upgrade from 70MVA to 105MVA TOTAL R 440 mil TOTAL MVA TO BE ADDED 415 MVA

9. Bulk Capacity Backlogs NAME STATUS CoT APPLICATIONS TO ESKOM HARTEBEESPOORT INFEED STATION City of Tshwane (CoT) applied to Eskom for increase in supply at Hartebeespoort in 2008. Waiting for Feasibility quote from Eskom The upgrading of the primary substations in the Hartebeespoort area depends on the upgrading of Hartebeespoort Infeed station. Hartebeespoort Infeed Station is fully loaded (40MVA) with no spare capacity. Indications from Eskom for the upgrading of the Hartebeespoort Infeed station is in 2019.  Applied for 33kV 80MVA (firm) at Hartebeespoort Infeed Station. This will supply the top Haretebeespoort dam supply area: Zilkaatsnek, Sandspruit, Schietfontein, PMP, Yskor and Swartspruit 33/11kV substations.  Applied for 88kV 50MVA (firm) at Hartebeespoort Infeed Station. This will supply the mid Hartebeespoort dam supply area: Ifafi and new Hartebeespoort 88/11kV substations.  Applied for 132kV 100MVA (firm) at Anderson/Summerhill/Lomond Infeed Station. This will supply the bottom Hartebeespoort dam supply area: Broederstroom, new Crocodile and Florapark 132/11kV substations.

10. Load Forecast

11. Streetlight Monitoring Devices To introduce a Tele-management systems for streetlights: (Real Time Streetlight Monitor) – To control streetlights remotely – Proactive monitoring and maintenance of streetlights in the Inner City – Safety; manually control of the lighting levels for the safety of pedestrians and motorists – Maintenance control: in line with SANS 10 098, maintenance plan on streetlights – Management Cost Reduction – Energy Cost Reduction

13. Social Responsibility Electrification of the informal settlements to provide basic services to the low cost housing A total number 0f 23, 000 backlogs in the Central Region only Creation of temporary jobs during the implementation of projects (target: 5000 jobs to be created)

14. PROJECTS NOT ADDRESSING BACKLOG (depends on customer applications and winter load for general up grades) IDP No.NameBudget (R’ m) 710005Upgrading/ Strengthening of Existing Network Schemes5,5 710006Payments to Townships for Reticulated Towns3 710163Sub Transmission System Equipment Refurbishment15 71016411kV Panel Extension In Substations6 710176Replacement of Obsolete And Dangerous Switchgear12 710177Low Voltage Network Within Towns16 710325Communication Upgrade: Optical Fibre net6 710480Strengthening 11kV Cable network11 710481Strengthening 11kV Overhead Network13 710484Substations3 712483New Connections22 712006Replacement of Obsolete And non functional Equipment 1 712759Capital Funded from Operating 3 712861Replacement of Obsolete Protection and Testing Instruments 1 712688Energy Efficiency and Demand Side Management 25 712862Rooiwal Power Station Refurbishment 5,8 TOTAL148.3 14

15. Public lighting maintenance Depot Area Number of Complains Received Number of Complains Completed Number of Complains Outstanding % Achieved Princes Park26512447200 88,5% Metro-Routes171 15515 Fortsig891 737155 Atteridgeville1229 1092136

16. The present CoT electricity network is fully loaded and Eskom will only be able to supply more capacity by February 2014. Most of the Infeed-stations are overloaded and some needs to be upgraded in order to provide more capacity to the City. Need to explore new technologies to better our services but the question budget still remains a big concern The challenge is that, even if the substations are upgraded, no power can be transferred until CoT network has been upgraded. The under funding/ Cut of funds of electricity bulk infrastructure have a negative impact on service delivery and development and the loss in revenue. CONCLUSION

17. 17 END QUESTIONS