TY - JOUR

T1 - Cost and schedule overruns in large hydropower dams

T2 - an assessment of projects completed since 2000

AU - Plummer Braeckman, Judith

AU - Disselhoff, Tim

AU - Kirchherr, Julian

PY - 2020/9/2

Y1 - 2020/9/2

N2 - This paper presents novel data on cost and schedule overruns in recent dam projects started and completed since 2000 and compares them with pre-existing data sets on projects started before 2000. Combining these data, a meta-data set was created of 184 cost overrun and 191 time overrun data points. For post-2000 projects, the average cost overrun was 33% and schedule overrun was 18% as compared with 46% and 37% respectively for pre-2000 projects. While a decrease in the averages was observed, the change in cost overruns is not statistically significant, whereas the change in time overruns is significant.

AB - This paper presents novel data on cost and schedule overruns in recent dam projects started and completed since 2000 and compares them with pre-existing data sets on projects started before 2000. Combining these data, a meta-data set was created of 184 cost overrun and 191 time overrun data points. For post-2000 projects, the average cost overrun was 33% and schedule overrun was 18% as compared with 46% and 37% respectively for pre-2000 projects. While a decrease in the averages was observed, the change in cost overruns is not statistically significant, whereas the change in time overruns is significant.

KW - Environmental planning

KW - Sustainability sciences, Management & Economics

KW - Large dams

KW - hydropower

KW - forecasting

KW - cost and schedule estimatesw

KW - World Commision on Dams

U2 - 10.1080/07900627.2019.1568232

DO - 10.1080/07900627.2019.1568232

M3 - Journal articles

VL - 36

SP - 839

EP - 854

JO - International Journal of Water Resources Development

JF - International Journal of Water Resources Development

SN - 0790-0627

IS - 5

ER -