Engineering Services by Grid Plus

Our substation design services encompass greenfield and brownfield projects, ensuring the efficient and reliable integration of power infrastructure to meet the growing demands of the energy sector.

Grid-Plus delivers comprehensive substation engineering services, supporting every discipline from Protection & Control to Civil and Structural Design. Our offerings span the full lifecycle of projects, ensuring technical accuracy, code compliance, and constructibility.

• Switching One-Line Diagrams
• Relaying and Control One-Line Diagrams
• Relay Panel Layouts and Logic Diagrams
• AC & DC One-Line Drawings
• Three-Line Drawings
• DC Schematics (Relaying, Equipment, SCADA)
• Panel wiring and Equipment Wiring Drawings
• Relay Settings Calculations and Coordination Studies 
• Settings Files and NERC/ISO Compliance Forms
• SCADA Points Lists and Network Architecture
• RTU/DFR Configuration Files
• Cable Sizing and Voltage Drop Calculations
• AC/DC Station Service Sizing
• Battery Sizing Calculations
   

• General Arrangement 
• Section Views
• Cable Trench Layout
• Conduit Layout and Details
• Grounding Plan and Details
• Lightning Protection Calculation and Layout
• Lighting Study and Layout
• Conduit Schedules
• Conduit and Trench Fill Calculations
• Bill of Materials and Specs Development
   

• Site Plan, Grading & Drainage Plans and Sections
• Surfacing, Fencing, and Erosion Control Plans
• Foundation Plans, Details, and Pier Schedules
• Structural Steel Plans, General Notes, and Calculations
• Oil Containment and Stair Slab Foundations
• Substation Steel (Standard & Tapered Structures)
• Static Mast, Dead-End, Bus Support, and Breaker Foundations
• Shield Mast and Switch Stand Erection Diagrams
• Static Mast Wire Tension and Structural Analysis
   

• Short Circuit and Load Flow Studies
• Arc Flash Studies 
• Grounding Studies
• Transient Recovery Voltage (TRV) Study
• Insulation Coordination and Rigid Bus Calculations
• Design Basis Documentation and QA/QC Reviews

Grid-Plus provides specialized engineering support to help utilities and developers meet North American Electric Reliability Corporation (NERC) compliance requirements for substations. 

We offer technical expertise and documentation services to ensure full compliance with applicable reliability standards, particularly during design modifications, system upgrades, and new substation installations.

At Grid-Plus, we serve as a trusted Owner’s Engineer (OE) across the full EPC lifecycle — from concept through energization — helping project owners navigate complex substation developments with confidence and clarity.

• Design Reviews
  In-depth technical review of physical, protection & control, civil, structural designs, SCADA and relay settings  for accuracy, compliance, and constructibility.)
   
• Specification & Scope Development
  Assistance with bid package creation, EPC scope definition, and technical specification  for equipment procurement and contracting.
   
• Interface Management
  Coordination between utilities, contractors, OEMs, and developers — ensuring clear POI design, data requirements, and equipment integration.
   
• Schedule & Progress Oversight
  Independent monitoring of engineering deliverables, construction milestones, FATs, and commissioning schedules.
   
• Submittal & Vendor Drawing Reviews
  Independent review of vendor packages, equipment drawings, and interface details to identify discrepancies before procurement.
   
• Standards Conformance Checks
  Verification that designs meet client, IEEE, and NEC standards, as well as project-specific requirements.
   
• FAT/SAT Oversight
  Witness and technical validation of Factory and Site Acceptance Testing for major equipment and protection systems.
   
• Construction RFI Support
  Timely technical responses and field adjustments to minimize delays and maintain quality.
   
• Punchlist and Energization Support
  Final inspections, issue tracking, and coordination with contractors during energization and turnover.
   
• Regulatory & Interconnection Compliance
  Support for industry standards, NERC/FERC requirements, and ISO interconnection deliverables.