Electrical Sr Design Engineer For Solar & BESS

Job Description Role Overview The Electrical Senior Design Engineer Solar BESS will serve as the technical authority for the electrical engineering and system integration of utility-scale or CI solar PV and Battery Energy Storage Systems. This role focuses on the complex electrical architecture of hybrid plantsspanning from DC generation and electrochemical storage up to high-voltage grid substations. You will be responsible for ensuring that all electrical designs are optimized for efficiency, safety, and absolute compliance with utility grid codes. Key Responsibilities 1. Advanced Electrical Engineering System Architecture Electrical Architecture: Design complex AC-coupled and DC-coupled utility-scale Solar-plus-BESS plant topologies. Core Calculations: Perform and validate critical electrical calculations including AC/DC cable sizing, ampacity, voltage drop, transformer sizing, earthing/grounding grids, and lightning protection. Power System Analysis: Conduct or supervise system studies using software like load flow analysis, short-circuit studies, relay coordination, and arc flash analysis. 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. 2. Equipment Selection Technical Procurement 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. 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. BOM Management: Ownership of the electrical Bill of Materials (BOM) and Bill of Quantities (BOQ) from the conceptual phase to Good-for-Construction (GFC). 3. Substation, Interconnection Grid Compliance Grid Interconnection: Lead the technical design of the pooling substation and overhead/underground transmission line interfaces up to the Point of Interconnection (POI). 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. Protection Control: Design protection schemes for the BESS and Solar farm interface, defining settings for numerical protection relays. 4. Cross-Functional Leadership Interface Coordination: Manage critical electrical interfaces between the PV system, BESS containers, Energy Management System (EMS), SCADA, and the utility substation. Disclaimer: This job posting & Location has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.