Battery Energy Storage Systems Application Engineer

BESS Application Engineer

Application Engineer – Battery Energy Storage Systems (BESS)

Location : Bangalore

The Application Engineer – BESS will be responsible for technical solution development, system sizing, proposal support, customer engagement, and application engineering for Utility Scale and Commercial & Industrial (C&I) Battery Energy Storage Systems.

The role requires strong knowledge of BESS sizing methodologies, renewable energy integration, grid services, power conversion systems (PCS), EMS, battery technologies, and project techno-commercial evaluation.

The engineer will work closely with Sales, Product Management, Engineering, EPC, and Customers to develop optimized BESS solutions for various applications.

Key Responsibilities

BESS Solution Design & Sizing

• Perform BESS sizing based on customer requirements and project use cases. 
• Develop technical solutions for: 
  • Peak Shaving 
  • Load Shifting 
  • Demand Charge Management 
  • Solar + Storage , Wind + Storage 
  • Backup Power 
  • Microgrid Applications 
  • EV Charging Support 
  • Frequency Regulation 
  • Grid Ancillary Services 
  • Renewable Firming 
  • Capacity Firming 
  • Energy Arbitrage 
  • Black Start Applications 
• Perform energy and power calculations considering: 
  • Load Profiles 
  • Solar/Wind Generation Profiles 
  • Battery Degradation 
  • Round Trip Efficiency 
  • Availability Requirements 
  • Future Expansion Requirements 
• Understand Grid Code requirements and utility interconnection requirements.
• Analyse customer load data and electricity tariff structures. 
• Develop business cases with Perform ROI, IRR, Payback Period and LCOE analysis.
• Proposal & Customer Support
  • Support sales teams during customer discussions. 
  • Prepare: Technical Proposals, Compliance Matrix, Single Line Diagrams (SLD) System Architecture Drawings. Bill of Materials (BOM), Technical Datasheets 
  • Conduct technical presentations and customer workshops. 

System Engineering

• Define system architecture including: 
  • Battery Containers 
  • PCS/Inverters 
  • MV Stations 
  • EMS/SCADA 
  • HVAC 
  • Fire Suppression System 
• Coordinate with engineering teams for project execution. 

Simulation & Analysis support

• Perform: 
  • Load Flow Studies 
  • Energy Yield Analysis 
  • Battery Degradation Studies 
  • System Efficiency Calculations 
  • Financial Modelling 
• Support grid interconnection studies where required. 

Market & Technology Analysis

• Track industry trends in: 
  • Lithium-Ion Technologies (LFP, NMC) 
  • Flow Batteries 
  • Grid Forming Inverters 
  • Hybrid Renewable Systems 
• Benchmark competitor solutions and market offerings. 

Power Systems understanding

• Power System Analysis 
• Grid Integration 
• Substation Fundamentals 
• Protection Coordination 
• MV/LV Distribution Systems 

Preferred Experience

• B.E./ M.Tech in Electrical, Electronics, Power Electronics, or related field. 
• 8+ years in Renewable Energy, Power Electronics, Energy Storage, Solar EPC, Utility Grid Projects, or Microgrid Solutions. 
• Hands-on experience sizing systems from 500 kWh C&I projects up to 500+ MWh Utility-scale BESS projects. 
• Experience with DC-coupled and AC-coupled Solar + BESS architectures. 
• Exposure to PCS technologies (String PCS and Central PCS). 
• Experience in techno-commercial evaluation and bid support for utility tenders.

Desired Competencies

• Strong analytical and problem-solving skills. 
• Customer-facing technical presentation capability. 
• Techno-commercial proposal preparation. 
• Cross-functional coordination. 
• Excellent communication and report-writing skills.