Substation and Protection & Controls Engineering

Welty Energy’s experienced substation engineering professionals have excelled at providing electric utility clients with innovative design solutions for new and expanded substation projects. Our experience includes greenfield sites as well as the upgrade and expansion of existing substations.
Welty is committed to supporting your substation projects from the planning and conceptual design stages through detailed design, construction, and commissioning.


  • New and expanded substation design (12kV to 500kV)
  • Major equipment design including power transformers, SF6 breakers, disconnect switches, regulators, capacitor banks, station service transformers, CCVT/PT/CT’s, wave traps, surge arresters, and control buildings/switchgears
  • Ground grid analysis and design
  • Lightning protection analysis and design
  • Physical design including take-off structures, steel support structures, slack and rigid bus, foundation design, security, and lighting
  • AC and DC system analysis and design
  • Conduit/cable plans and schedules
  • Bill of material lists and procurement support
  • QA/QC and owner’s engineer services
  • Standards Development
  • Interconnection Studies
  • Protection and control design
  • Cable voltage drop calculations
  • SCADA design