Our Services What we've done for our clients for the past 50 years



Design and construction administration/inspection services for electric power substations of various types. These include industrial substations ranging from 500 kVA at 480 Volts to 20 MVA at 44 kV and utility transmission and distribution substations up to 100 MVA and 230 KV primary.

  • Power Supply Coordination
  • Site Selection
  • General Arrangement
  • Equipment Selection/Specifications
  • Relaying and Controls
  • Protective Device Coordination
  • Substation Automation/Smart Grid
  • Testing and Commissioning
  • Ground Grid Design
  • Soil Erosion and Storm Water Management Plan
  • Oil Spill Prevention and Countermeasures

Transmission and Distribution Lines

Design of electric transmission lines in all standard voltages from 44 kV to 230 kV. Electric distribution line projects range from 2.4 kV to 34.5 kV. These projects have included both overhead and underground construction, and have involved conversion under energized conditions, as well as new line construction.  Self-supported steel and concrete poles have been utilized in line designs up to 230 kV.

  • Route Selection
  • Pole Design
  • Line Staking
  • Material Selection/Procurement
  • Sag and Tension
  • Downtown Streetscaping
  • Decorative Street Lighting
  • Foundation Design
  • Pole Framing Guides
  • Duct Bank Design
  • Detail Construction Drawings
  • Plan and Profile Drawings
  • Inventories
  • Joint Use Agreements
  • DOT Relocations
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Water and Wastewater Facilities

Southeastern has extensive experience in the water and wastewater industries and has carried out design and construction of water and wastewater related electrical installation such as:

  • Standby Generation
  • Generator Switchgear
  • Transfer Switches
  • Arc Flash Analyses
  • Substations
  • Medium Voltage Switchgear
  • 480V Switchboards
  • Power/Lighting Panels
  • Motor Control Centers
  • Starters and Drives
  • Pump Control panels
  • Distribution Circuit Design
  • Lift Station Electrical Design
  • Motor Starting Analyses
  • Relaying and Protection Device Coordination
  • Short Circuit Analyses
  • Testing and Commissioning
  • Training


Design of peak shaving and emergency standby generation for electric utilities, water and wastewater treatment facilities, data centers, and other commercial and industrial facilities. Projects have been designed using generators rated from 10 KW to 3000 KW. Total project capacities range up to 24 MW. The accumulated capacity of Southeastern designed generation facilities exceeds 300 MW.

  • Economic Feasibilities
  • Generator Sizing
  • System Configurations
  • Switchgear Design
  • Interconnection Requirements
  • Structural/Foundation/Mechanical Design
  • Protective Device Coordination
  • Sequence of Operations
  • Monitoring and Control Schemes
  • Building/Housing Design
  • Fuel Storage/Distribution
  • Fire Suppression
  • Sound Attenuation
  • Code Compliance
  • Grounding/Bonding
  • Air Quality Permits
  • Oil Spill Containment and Countermeasures

Studies and Analyses

Southeastern has performed numerous types of electric power system studies.  We have performed arc flash studies since 2005 for over 17 electric utility systems, 25 generator sites, 110 sewer lift-stations, 10 water and wastewater plants, and various commercial and industrial facilities.

  • Arc Flash
  • Electric Distribution System Studies
  • Capital Improvement Plans
  • Protective Device Coordination
  • Short Circuit Analysis and Equipment Evaluation
  • Load Flow
  • Voltage Drop
  • Motor Starting
  • Power Factor Optimization
  • Capacitor/Regulator Placement
  • System Reliability
  • Cost of Service
  • Emergency Switching Plan

Client Services

For over 50 years, Southeastern has addressed the needs of our clients pertaining to Electric Utilities from planning to implementation.  We go beyond design engineering services and have the expertise to assist our clients with practically any issues faced by Electric Utilities.  Our Clients can call with a quick question or to request a more in-depth study.

  • SCADA Systems
  • Project Management
  • Construction Inspection
  • Pole Attachment Agreements
  • Renewable Generator Interconnections
  • Smart Grid Design
  • Substation Automation
  • Accident Investigation and Expert Testimony
  • Electric System Troubleshooting
  • Power Audits
  • Service Reviews
  • Rate Options
  • Advanced Metering Infrastructure (AMI)
  • Customer Seminars
  • Training
  • Electric Rate Analysis
  • Budgetary Cost Estimates
  • System Inventories and Appraisals