Electrical Sr Design Engineer - Solar & BESS

1. Electrical Architecture: Design complex AC-coupled and DC-coupled utility-scale Solar-plus-BESS plant topologies.
2. Core Calculations: Perform and validate critical electrical calculations including AC/DC cable sizing, ampacity, voltage drop, transformer sizing, earthing/grounding grids, and lightning protection.
3. Power System Analysis: Conduct or supervise system studies using software like load flow analysis, short-circuit studies, relay coordination, and arc flash analysis.
4. Engineering Deliverables: Author and review comprehensive electrical engineering packages: Single Line Diagrams (SLD), Three Line Diagrams (3LD), schematic drawings for control protection, and cable trench/routing layouts.

1. Specification Authoring: Define technical specifications and datasheets for key electrical equipment: Power Conversion Systems (PCS), Central/String Inverters, MV/HV Transformers, Switchgears, Ring Main Units (RMU), and Battery Enclosures.
2. Vendor Qualification: Lead the technical evaluation of bids from OEMs and EPC contractors. Review and approve vendor drawings (e.g., GA drawings, control schematics) to ensure alignment with project requirements.
3. BOM Management: Ownership of the electrical Bill of Materials (BOM) and Bill of Quantities (BOQ) from the conceptual phase to Good-for-Construction (GFC).

1. Grid Interconnection: Lead the technical design of the pooling substation and overhead/underground transmission line interfaces up to the Point of Interconnection (POI).
2. Compliance Standards: Ensure all designs comply strictly with regional Grid Codes, utility interconnect mandates, and international standards such as IEEE 1547, UL 9540/9540A, NFPA 855, IEC 62933, and local electrical codes.
3. Protection Control: Design protection schemes for the BESS and Solar farm interface, defining settings for numerical protection relays.

1. Interface Coordination: Manage critical electrical interfaces between the PV system, BESS containers, Energy Management System (EMS), SCADA, and the utility substation.
2. Mentorship Quality Control: Establish internal electrical design standards, templates, and checklists. Peer-review the work of junior engineers and CAD designers to ensure zero-error delivery.

1. Software Mastery: Expert proficiency in AutoCAD and PVsyst. Hands-on experience with power system simulation software like ETAP, CYME, or DigSILENT / PSCAD is highly critical.
2. BESS Engineering: Deep understanding of battery container internal electrical architecture, auxiliary power distribution, HVAC/thermal load impacts, and fire suppression integration.
3. Standards Knowledge: Strong familiarity with high-voltage and medium-voltage substation design practices.

1. Strong technical leadership capability with an ability to justify design choices to regulatory bodies and high-profile clients.
2. Exceptionally detail-oriented with a rigorous focus on safety, reliability, and code compliance.
3. Effective communication skills to bridge the gap between software developers (EMS/SCADA) and physical site construction teams.

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