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Table 2 Cost overruns in construction projects

From: Managing project risks and uncertainties

Project

Cost ($billions)

Cost overrun (%)

Initial estimate

Possible final

Gautrain

3.38

3.5

104

New Multi Products Pipeline

2.25

2.4

107

Medupi Power Station

12.24

22.2

181

Ingula Pumped Storage Scheme

1.4

3

214

Gauteng Freeway Improvement Project

3.1

10.4

335

Nklandla - President Zuma’s residence

0.00431

0.0274

636

  1. Values are in 2014 US dollars. Estimates from information in the public domain.