Transmission Ten-Year Development Plan 2011-2020 - Eskom

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A significant amount of new transmission lines is being
added to the system with over 6,000 km of 765kV
and over 8 000 km of 400kV lines either approved or
proposed over the 10-year TDP period. This is mainly
due to the major network reinforcements required for
the supply to the Cape (South and West Grids) and
Kwa Zulu Natal (East Grid). The integration of new
power stations in the developing Limpopo West Power
Pool (Medupi and Coal 3 close to Matimba and the IPP
Mmamabula in Botswana) also require significant lengths
of transmission line as they are very remote from the
main load centres. New HVDC lines are required to
export the excess power from Coal 3 in the Waterberg
directly to load centres in Gauteng and Kwa Zulu Natal
(Central and East Grids) requiring 1 700km of 800kV
constructed HVDC lines.
The large amount of 400kV transmission line is also as
a result of a more meshed transmission 400kV network
Transmission Ten-Year Plan 2011-2020
TDP New Assets Total
HVDC Lines (km)
765kV Lines (km)
400kV Lines (km)
275kV Lines (km)
Transformers 250MVA+
Transformers