Product Manager – BESS & Energy Storage

1. Role Purpose

Loom Solar is building a scalable Energy Storage & BESS business ranging from 1 kWh residential batteries to 1,000 kWh / 1 MWh commercial and industrial Battery Energy Storage Systems.

We are looking for a Product Manager – BESS & Lithium Battery who can own the complete product lifecycle:

Market Research → Product Strategy → Product Specification → Cell/Battery/OEM Selection → BMS → PCS/Inverter Integration → Certification → Product Launch → Sales → Service → Product Profitability

The candidate will be responsible for developing a competitive BESS portfolio for residential, commercial, industrial, telecom, solar EPC, microgrid, backup power and energy-management applications.

The role requires a combination of technical depth, product management, commercial understanding and strong execution capability.

2. Product Portfolio

The Product Manager will manage and develop the complete storage portfolio:

Residential

• 1 kWh
  
• 2.5 kWh
  
• 5 kWh
  
• 10 kWh
  
• 15 kWh
  
• 20 kWh
  

Commercial

• 25 kWh
  
• 50 kWh
  
• 100 kWh
  
• 200 kWh
  
• 261 kWh
  
• 500 kWh
  

Industrial / Utility

• 1,000 kWh / 1 MWh
  
• Modular BESS solutions above 1 MWh as the business expands
  

The portfolio may include:

Battery Pack + Rack + BMS + PCS + EMS + HVAC + Fire Safety + Container/Cabinet + Monitoring Software

3. Key Responsibilities

A. BESS Product Strategy

Develop the 3-year BESS product roadmap for Loom Solar.

Define:

• Residential battery roadmap
  
• Hybrid inverter + battery combinations
  
• C&I BESS roadmap
  
• AC-coupled BESS
  
• DC-coupled BESS
  
• Modular BESS
  
• Cabinet BESS
  
• Containerized BESS
  
• 1 MWh+ systems
  

Identify market opportunities in:

• Rooftop solar
  
• PM Surya Ghar
  
• Residential backup
  
• C&I peak shaving
  
• Load shifting
  
• Demand management
  
• Solar self-consumption
  
• Diesel generator replacement
  
• Microgrids
  
• Telecom
  
• EV charging
  
• Open-access projects
  
• Solar EPC
  
• Captive power
  
• Renewable energy projects
  

4. Product Development

Own the complete BESS product-development lifecycle.

Customer Requirement → PRD → Technical Specification → Cell Selection → Pack Design → BMS → PCS → EMS → Prototype → Testing → Certification → Pilot → Commercial Launch

Prepare detailed product specifications covering:

• Battery chemistry
  
• Cell format
  
• Cell capacity
  
• Nominal voltage
  
• Usable energy
  
• C-rate
  
• DoD
  
• Round-trip efficiency
  
• Cycle life
  
• Operating temperature
  
• IP rating
  
• Communication protocols
  
• CAN / RS485 / Ethernet
  
• BMS architecture
  
• PCS rating
  
• EMS functionality
  
• Thermal management
  
• Fire protection
  
• Safety systems
  
• Remote monitoring
  
• Warranty
  

5. Lithium Battery Technology

The candidate should understand:

• LFP / LiFePO₄ technology
  
• Lithium-ion battery architecture
  
• Cell → Module → Pack → Rack → System
  
• Battery management systems
  
• SOC / SOH
  
• Cell balancing
  
• Thermal runaway
  
• Thermal management
  
• Battery degradation
  
• C-rate
  
• Depth of discharge
  
• Cycle life
  
• DC protection
  
• AC protection
  
• Contactor and pre-charge systems
  
• Fuses and breakers
  
• Communication architecture
  

Experience with LFP-based stationary storage will be strongly preferred.

6. BMS & EMS Product Ownership

Own the functional requirements for:

BMS

• Cell voltage monitoring
  
• Temperature monitoring
  
• Over-voltage protection
  
• Under-voltage protection
  
• Over-current protection
  
• Short-circuit protection
  
• Over-temperature protection
  
• Cell balancing
  
• SOC estimation
  
• SOH estimation
  
• Fault management
  
• Event logging
  

EMS

Define requirements for:

• Solar priority
  
• Battery priority
  
• Grid charging
  
• Peak shaving
  
• Time-of-use optimization
  
• Load shifting
  
• Export limitation
  
• Backup operation
  
• DG synchronization
  
• Energy forecasting
  
• Remote monitoring
  
• Energy analytics
  

7. PCS & Inverter Integration

Work closely with engineering and inverter teams to integrate:

Battery + BMS + PCS + Hybrid Inverter + Solar + Grid + Load + EMS

Define:

• AC/DC architecture
  
• Power rating
  
• Charging power
  
• Discharging power
  
• Grid synchronization
  
• Grid-forming / grid-following requirements
  
• Black-start capability where applicable
  
• Backup functionality
  
• Parallel operation
  
• Multi-rack operation
  
• Communication protocols
  

8. OEM / Supplier Management

Identify and qualify:

• Lithium cell manufacturers
  
• Battery-pack OEMs
  
• BMS suppliers
  
• PCS manufacturers
  
• EMS/software providers
  
• HVAC suppliers
  
• Fire suppression suppliers
  
• BESS enclosure/container manufacturers
  

Evaluate vendors on:

Technology | Quality | Cost | Reliability | Warranty | Certification | Capacity | Lead Time | Service | Financial Stability

Develop supplier scorecards and quarterly vendor reviews.

9. Product Cost & Commercial Ownership

Own the product economics.

Track:

• Cell cost
  
• Pack cost
  
• BMS cost
  
• PCS cost
  
• EMS cost
  
• Cabinet/container cost
  
• HVAC
  
• Fire safety
  
• Installation
  
• Logistics
  
• Warranty provision
  
• Service cost
  

Develop product-level:

BOM → Landed Cost → Dealer Price → EPC Price → Project Price → Gross Margin → Contribution Margin

Continuously drive ₹/kWh cost reduction.

10. Product Pricing

Develop pricing architecture for:

Residential

₹/kWh + inverter/system package

C&I

₹/kWh + PCS + EMS + installation

Large BESS

₹/kWh + EPC + commissioning + O&M

Track competitor pricing and maintain a monthly:

BESS Market Price Tracker

11. Product Certification & Safety

Coordinate with engineering, quality and certification teams to ensure compliance with applicable Indian and international standards.

Own the certification roadmap covering, as applicable:

• Battery safety
  
• BMS safety
  
• EMC
  
• Electrical safety
  
• Transportation requirements
  
• Fire safety
  
• Grid compliance
  
• Environmental testing
  
• Factory acceptance testing
  
• Site acceptance testing
  

Maintain a complete BESS technical compliance matrix before launch.

12. Quality & Reliability

Create a closed-loop quality system:

Field Failure → Data → RCA → CAPA → Engineering Change → Validation → Product Improvement

Monitor:

• Cell failure
  
• Pack failure
  
• BMS failure
  
• PCS failure
  
• Communication failure
  
• Thermal issues
  
• Warranty claims
  
• RMA
  
• Field failure rate
  
• MTBF
  
• Availability
  

For large BESS systems, establish:

FAT → SAT → Commissioning → Performance Test → O&M

13. Product Warranty

Develop warranty architecture based on:

• Years
  
• Cycles
  
• Throughput
  
• Remaining capacity
  
• Operating conditions
  
• Temperature
  
• DoD
  
• C-rate
  

Define warranty policies for:

• Residential batteries
  
• Commercial BESS
  
• 1 MWh BESS
  
• Extended warranty
  
• AMC/O&M
  

14. Product Launch

Own the complete launch process.

Prepare:

• Product name
  
• Positioning
  
• Datasheet
  
• Technical manual
  
• Installation manual
  
• Warranty policy
  
• Pricing
  
• Product presentation
  
• Sales kit
  
• ROI calculator
  
• BESS sizing calculator
  
• Installation checklist
  
• Troubleshooting guide
  
• Training material
  

Train:

Sales → Dealer → EPC → Installer → Service Team

15. BESS Sizing & Solution Design

Create standard sizing methodologies for:

Residential

Load → Solar → Battery → Inverter → Backup requirement

C&I

Load profile → Solar generation → Peak demand → Tariff → Battery size → PCS size → ROI

Develop tools for:

• Battery sizing
  
• PCS sizing
  
• Solar+BESS sizing
  
• Backup sizing
  
• Peak shaving
  
• Energy arbitrage
  
• DG replacement
  
• ROI/payback
  

16. Customer & Market Development

Personally meet:

• Large EPCs
  
• C&I customers
  
• Solar installers
  
• Developers
  
• Industrial customers
  
• Telecom companies
  
• Data centers
  
• EV charging companies
  
• Energy consultants
  
• Government customers
  

Conduct regular customer discovery and convert requirements into product roadmap decisions.

17. Competitive Intelligence

Track BESS players and technologies across:

• Product architecture
  
• Cell chemistry
  
• ₹/kWh
  
• Warranty
  
• Cycle life
  
• Efficiency
  
• PCS
  
• EMS
  
• Fire safety
  
• Monitoring
  
• Installation
  
• O&M
  

Maintain a monthly competitor dashboard.

18. Digital & Monitoring Product

Work with the technology team to build a Loom BESS monitoring platform covering:

• SOC
  
• SOH
  
• Voltage
  
• Current
  
• Temperature
  
• Power
  
• Energy
  
• Charging/discharging
  
• Faults
  
• Alarms
  
• Historical generation
  
• Battery degradation
  
• Remote diagnostics
  
• Firmware updates
  
• Warranty tracking
  

19. Sales Enablement

Develop:

• Dealer BESS training
  
• EPC training
  
• Installer certification
  
• BESS sales presentation
  
• Technical comparison
  
• Competitor battle cards
  
• ROI calculator
  
• Application calculator
  
• Product selection guide
  
• Case studies
  

The Product Manager should spend meaningful time in the market with the sales organization.

Requirements

• 6–12 years of experience in lithium batteries, BESS, energy storage, inverter or power electronics.
  
• Strong understanding of LFP battery systems.
  
• Experience in product development/product management.
  
• Experience working with battery OEMs.
  
• Understanding of BMS and PCS.
  
• Strong understanding of solar + storage systems.
  
• Experience with commercial negotiations and product costing.
  
• Strong analytical and project-management skills.
  

Preferred

Experience in:

• C&I BESS
  
• 100 kWh–1 MWh systems
  
• Containerized BESS
  
• Hybrid inverters
  
• EMS
  
• Solar EPC
  
• Energy management
  
• EV charging
  
• Microgrids
  
• DG replacement
  
• Utility-scale storage
  

Benefits

1. Freedom : We allow you freedom to “follow your passion”

2. Opportunity to work with India’s fastest growing SMB Company

3. Regular Training of Professional Skills such as Leadership, Problem Solving and Product offerings.

4. Multifold chances increase to build the career in Solar Energy Sector

5. Exponential Growth in Salary and other remuneration

6. Great learning curve and hand on experience with leadership team about solar in future