The substations will have a capacity of 132kV each and the first two are scheduled to be completed later this year. All four will enter service by mid-2012.

Total investment in the construction of the substations is expected to reach $163m, according to a spokesman for DIC.

DIC is Dewa’s third-largest client after Dubailand and Dubai International Airport, the new airport being developed near Jebel Ali. The city is also Dubai’s third-largest non-real estate project.

Total investment in DIC’s infrastructure is expected to reach $15bn, including investments made by companies who have leased land in the area. The high level of demand for space in the city led to the redesign of the masterplan earlier this year.