Transmission Ten-Year Development Plan 2011-2020 - Eskom

CLN
Actual Peak Load
2009 (MW)
Forecasted Load (MW)
2011 2016 2020
Ave. Annual %
Load Increase
Johannesburg 4202 4432 5720 6550 4.2
West Rand 1980 2221 2287 2553 1.4
Nigel 1668 1907 1979 2082 1
Vaal Triangle 1262 1459 1560 1627 1.1
Table 6.1: Central Grid CLN load forecast and percentage load increases
The TDP schemes for the Central Grid consist
of extending the 275kV network (built at 400kV
insulation level to allow for future upgrade to 400kV)
the installation of additional transformers at existing
substations, as well as the construction of seven new
Transmission Assets
for Central Grid
New Assets expected in
2011 - 2015
New Assets expected
in 2016 - 2020
Total New
Assets expected
Total kms of line 623 329 952
765kV Lines (km)
400kV Lines (km)
275kV Lines (km)
Total installed
Transformer MVA
0
597
26
0
295
34
0
892
60
3,095 6,340 9,435
Transformers (no. of) 8 14 22
Capacitors (no. of) 8 0 8
Reactors (no. of) 0 0 0
Table 6.2: New transmission assets for the Central Grid
substations. The integration of Medupi and Kusile
power stations will result in the Central Grid 400kV
network being strengthened as well. The increase
in transmission assets by end 2015 and end 2020
and the cumulative total is shown in Table 6-2.
© Eskom 2011 15