Expert BESS

Job Title: Technical Expert : Battery Energy Storage Systems (BESS)

Department: Global Maintenance Services (GMS) AMEA

Location: Pune India

Reporting To: Lead GMS AMEA

Role Overview:

The Technical Expert : Battery Energy Storage Systems (BESS) is a senior specialist role responsible for in-depth diagnostics testing performance evaluation and reliability enhancement of utility-scale stand-alone BESS and hybrid (Solar BESS / Wind BESS) systems. The role requires 8-10 years of hands-on BESS project analysis strong expertise in battery technology power conversion systems controls and advanced capabilities in battery testing degradation assessment safety engineering and system-level analysis.

Key Responsibilities:

1. BESS Diagnostics Repair & Maintenance:

• Lead hands-on fault diagnostics at cell module rack PCS EMS/PMS and system levels.
• Perform inspection and repair for battery modules sensors racks contactors and battery protection systems.
• Conduct thermal imaging impedance spectroscopy load testing and post-repair verification.

1. System-Level Analysis Stand-Alone & Hybrid BESS:

• Evaluate power dispatch performance grid interaction and transient response for stand-alone BESS.
• Analyze hybrid interactions involving inverters PCS MPPT and grid controllers for renewable smoothing and firming.
• Assess renewable variability impact on battery degradation.

1. Battery Technology Expertise & Testing:

• Provide deep technical expertise on Li-ion chemistries: LFP NMC NCA LTO.
• Conduct cell/module cycle testing capacity testing stress testing and degradation profiling.
• Review OEM test reports UL9540A data and IEC conformity.

1. BMS & Controls:

• Diagnose BMS firmware and SOC/SOH algorithms.
• Analyze balancing performance sensor biases and derating logic.
• Evaluate PCS control loops and EMS algorithms for scheduling and charge control.

1. Root Cause Analysis & OEM Engagement:

• Lead RCAs for thermal events imbalance degradation and PCS failures.
• Prepare detailed RCA reports and corrective/preventive recommendations.
• Coordinate with OEM engineering for design corrections and firmware updates.

1. Warranty LTSA & Insurance Support:

• Validate warranty claims using cycle count SOH data and event logs.
• Provide technical evidence for insurance claims.
• Assess refurbishment vs repowering strategies for aging assets.

1. Spare Parts Strategy & Procurement Support:

• Define critical spare parts strategies for modules CMUs relays sensors and PCS components.
• Evaluate supplier quality and warranty reliability.

1. Site-Level Technical Support:

• Support site teams during breakdowns anomalies and safety events.
• Guide commissioning upgrades and critical maintenance.
• Analyze event logs SCADA EMS/PMS data and grid parameters.

1. Monitoring Platforms & Diagnostic Tools:

• Use EMS/PMS/SCADA for predictive diagnostics.
• Detect early degradation signs and recommend life-extension strategies.

1. Cross-Functional Collaboration:

• Work with engineering digital and asset management to drive reliability.
• Share insights for design improvements and procurement decisions.

1. Process Standardization & Compliance:

• Develop SOPs for diagnostics safety protocols and reporting.
• Ensure compliance with IEEE IEC and UL standards.

1. Qualifications & Experience:

• Bachelors or Masters in Electrical Engineering Power Electronics or Energy Storage.
• Minimum 8-10 years of hands-on BESS experience.
• Expertise in battery technology PCS BMS EMS/PMS and degradation analysis.

1. Key Competencies:

• Battery technology degradation mechanisms & safety engineering.
• PCS troubleshooting and grid-interaction analysis.
• RCA leadership for battery/PCS/system failures.
• Hybrid system technical expertise.
• Spare-part strategy & lifecycle planning.