Transmission Ten-Year Development Plan 2011-2020 - Eskom

Potential imported power projects were treated as
separate sensitivity analysis studies in the 20 year
transmission strategic grid studies.
Any promising imported power projects can then
be included and incorporated in future TDP updates
once a sufficient level of confidence in the timing and
implementation is attained.
Figure 2.2: Power station capacity introduction by year
The proposed OCGT IPP plants to be provided by
the Department of Energy (DOE) are not specifically
included in the studies. However, the two known sites
in the East and South Grids have been studied, and
effectively, only the feeder bays at the relevant Eskom
MTS substations are required to integrate them into
the network.
These plants are designed for operation only during
Assumed New Generation Capacity
2010 TDP-Plan
New Generation summary
A summary of the new plant and the year that the
last unit at the power station becomes commercially
available is given in Appendix A. These generation units
were assumed to be in service at the expected dates.
This is graphically illustrated in Figure 2 2 below and
Figure 2 3 on the next page.
peak load periods or during emergencies, making
it necessary to plan the network to meet local load
without them being available for use.
It is also acknowledged that the Tubatse (or Lima)
pumped-storage scheme project near Steelpoort has
been put on hold, but most of the infrastructure will still
be required for system reliability purposes in order to
meet the needs of local loads.
© Eskom 2011 7