Electrical Engineer, Senior/Intermediate - Solar & BESS

Tetra Tech is adding a Senior/Intermediate Electrical Engineer (Solar & BESS) to our Power team.

Why Tetra Tech:

At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry‑leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting‑edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world.

Your Impact:

Join Tetra Tech to make a real difference. Our work leverages cutting‑edge technologies, advanced analytics, and the expertise of world‑class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy.

Position Summary:

We are currently seeking a Senior/Intermediate Electrical Engineer (Solar & BESS). This job can be performed anywhere in Canada. This is a newvacant position for which we are actively recruiting. To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

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 recent 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+)
- MV/HV collector system designs

- Support the design and integration of:

- Utility‑scale Solar PV systems
- BESS facilities
- Auxiliary power systems
- Interconnection infrastructure
- Protection and control systems

- Perform and review power system engineering studies, including:

- Load flow analysis
- Short circuit analysis
- Grounding studies
- Arc flash studies
- Protection coordination studies

- Ensure engineering deliverables comply with:

- Client specifications
- Applicable utility requirements
- Interconnection standards
- Industry codes and standards (IEEE, CSA, NEC, NESC, etc.)

- Support projects through all phases, including:

- Feasibility and conceptual design
- Detailed engineering
- Procurement support
- Construction support
- Commissioning and energization

- Maintain up‑to‑date knowledge of BESS technologies, codes, and industry trends.
- Coordinate with clients, utilities,



OEMs, contractors, and multidisciplinary internal teams.
- Prepare and review technical reports, engineering calculations, design criteria documents, procurement packages, and construction documentation.
- Coordinate with internal stakeholders and external consultants to track scope, schedule, and budget.
- Support construction activities by responding to RFIs, reviewing submittals, participating in site coordination activities, and resolving technical issues.
- Assist with project planning, scheduling, resource coordination, and technical leadership activities.
- Contribute to continuous improvement initiatives, technical innovation, and knowledge sharing within the Power Division.

Required Qualifications:

- Bachelor’s degree in Electrical Engineering from an accredited university.
- Minimum of 7 years of relevant engineering experience, preferably in:
- Battery Energy Storage Systems (BESS)
- Transmission and distribution infrastructure

- Demonstrated experience supporting or leading renewable energy and/or substation engineering projects.
- Strong technical knowledge of:

- BESS technologies
- BESS use‑cases including peak shaving, load shifting, demand response, and frequency response
- Medium‑and high‑voltage substations
- Protection and control systems

- Experience performing power system studies using industry‑standard software such as:

- ETAP
- CYME
- PVsyst
- PVCase

- SME in knowledge of NEC 705, NEC 706, IEEE 1547, UL 9540, and NFPA 855.
- Proficiency in AutoCAD/Revit, Bluebeam, Microsoft Office.
- Professional Engineer (P.

📌 Electrical Engineer, Senior/Intermediate (Mississauga)
🏢 Tetra Tech
📍 Mississauga