AJEC has rendered Engineering and consultancy services for various substations throughout the kingdom, which includes EHV / HV / MV substations, indoor GIS substations and outdoor switchyards. Also enclosed a list of substation projects and the type of services rendered. The various activities & services rendered to clients pertaining to substations are briefly summarized below: -

Project Execution

  • Project Management
  • Site Supervisory Work for Construction, Erection, Testing & Commissioning
  • Work
  • Project Monitoring & Control
  • Project Planning and Scheduling

Assistance for Awarding Of Contracts

  • Basic Design Preparation
  • Preparation of Technical Specifications
  • Preparation of Tender Documents
  • Evaluation of Bids

Feasibility Studies for Regional Electrification

  • Survey of Villages and Hamlets
  • Assessment of Loads
  • Fixing of Load Centers
  • Estimation of No. of Distribution Transformers and Establishment of
  • Substations.

Detailed Design Engineering Services


  • Equipment Layouts
  • Protection & Control System Design
  • Protection System Interfacing
  • Power System Layouts And Line Diagram
  • SCADA And Telecom System Design
  • Power And Control Cable Sizing And Schedules
  • Trenches, Ducts, Tunnels, Cable Tray Layouts
  • Power System Equipments Sizing Calculations
  • AC & DC Distribution For Protection Control And Other Utilities
  • Sizing Of Ct/Vt, Battery Chargers, Aux. Transformers, Power Cables
  • Earthling Grid Design
  • Lightning Protection System
  • Internal & External Lighting System Design
  • Fire Alarm System, EPBX And Security Systems
  • Power System Studies Include Short Circuit, Load Flow, Protection Coordination Study.


  • HVAC System
  • Pressurized Ventilation System For GIS Halls, Basements Etc.
  • Firefighting system design
  • Plumbing system


  • Architectural & civil layouts
  • RCC and steel design of structures
  • Design of columns, beams, floor, roof, retaining walls etc.
  • Foundation design for transformers and other equipments
  • Trenches, ducts, Tunnels
  • U/G and O/H tanks