Power Station &
Underground Network
Extension and establishment of HV/MV electrical stations and underground cable networks across Saudi Arabia — from 132kV transmission to 13.8kV distribution.
Powering the Kingdom's Infrastructure Growth
DDCC specializes in the construction, extension, and establishment of high-voltage and medium-voltage electrical substations and underground cable networks. Our expertise spans from 132kV bulk supply points to 13.8kV distribution substations across multiple regions of Saudi Arabia.
With 15+ years of experience working with SEC (Saudi Electricity Company), our team delivers end-to-end solutions including site preparation, civil works, equipment installation, cable laying, jointing, termination, testing, and commissioning — all executed to the highest safety and quality standards.
Our portfolio includes major substation projects in Riyadh, Jeddah, Madinah, and other cities — supporting the Kingdom's Vision 2030 infrastructure development goals.
Our Capabilities
HV/MV Substation Construction
Complete construction of 132kV, 110kV, and 13.8kV electrical substations including civil, structural, and electromechanical works.
Underground Cable Networks
Supply and installation of high-voltage underground cable systems including trench excavation, duct banks, cable pulling, jointing, and termination.
Trench & Duct Bank Works
Deep trench excavation, reinforced concrete duct bank construction, manhole installation, and backfilling with road reinstatement.
Cable Jointing & Termination
Professional HV/MV cable jointing, straight-through joints, transition joints, and indoor/outdoor terminations by certified technicians.
Testing & Commissioning
Comprehensive electrical testing including VLF testing, partial discharge, insulation resistance, and full commissioning with grid synchronization.
Traffic & Safety Management
Complete traffic management plans, road safety barriers, signage, and coordination with municipal authorities for urban projects.
Our Process
Survey & Planning
Route survey, soil investigation, utility mapping, and detailed engineering design.
Civil Construction
Trench excavation, duct bank construction, manhole installation, and foundation works.
Cable Installation
Cable pulling, laying, jointing, termination, and connection to switchgear equipment.
Testing & Handover
Electrical testing, commissioning, grid synchronization, and project handover to client.
Need Power Infrastructure?
Contact DDCC for your next substation or underground cable project across Saudi Arabia.
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