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Electrical Engineer, Senior/Intermediate - Solar & BESS

Tetra Tech | mississauga, Canada | Posted June 01, 2026

Position Overview

Electrical Engineer, Senior/Intermediate – Solar & BESS

We are currently seeking an Electrical Engineer (Senior/Intermediate) for our office based in Mississauga, ON (this position can be performed anywhere in Canada).

Essential Job Functions

  • Lead electrical engineering efforts for utility‑scale solar and lithium‑ion BESS projects from concept (system sizing, layout) through construction.
  • Interface with utilities and ISO/RTOs to support interconnection submittals, permitting, and compliance for new renewable and BESS projects.
  • Prepare, review, and coordinate electrical engineering deliverables, including single‑line diagrams, protection and control schematics, electrical layouts, equipment specifications, substation designs (34.5 kV to 230 kV+), and MV/HV collector system designs.
  • Support the design and integration of utility‑scale Solar PV systems, BESS facilities, auxiliary power systems, interconnection infrastruc...

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