Designation - Design Engineer (Solar + BESS)

Location - Chennai

Role Overview

Pre-sales technical owner who designs hybrid Solar plus BESS systems that are technically optimal, commercially competitive, and financially defensible. Bridge between commercial proposals and engineering execution. Must be as fluent in PVSyst yield modeling as in the PPA financial model that flows from it.

Key Responsibilities
Conduct site assessments and energy consumption analysis to validate project feasibility
Design Solar plus BESS hybrid systems — PV sizing, inverter selection, BESS capacity and chemistry, grid interconnection scheme
Prepare detailed technical proposals and DPRs underpinning all customer agreements
Build energy yield models using PVSyst or Homer Pro calibrated to local irradiance and loss factors
Size BESS based on ToD dispatch requirements, peak shaving objectives, backup duration, and degradation assumptions
Define performance guarantee parameters that flow into the PPA financial model
Review and approve technical specifications before handover to Procurement
Support BD Managers during customer technical due diligence and proposal defense

Must-Have Profile
B.E. or M.E. in Electrical Engineering
5–9 years in solar or hybrid energy system design
AUTOCAD Proficiency




Proficiency in PVSyst and at least one BESS sizing tool — Homer Pro, MATLAB, or equivalent
Understanding of BESS chemistry options, BMS specifications, and solar inverter integration requirements
Knowledge of DISCOM grid interconnection requirements and protection relay principles

Preferred / Bonus
Experience with hybrid EMS platforms — Schneider EcoStruxure, SMA Fuel Save, or custom
Knowledge of IEC 62619, IEC 62933, and relevant BIS standards for BESS
Understanding of how yield assumptions drive IRR outcomes in PPA models

Success Metrics — First 12–24 Months
Proposal turnaround — target 5 working days from complete site and consumption data
Yield modeling accuracy — actual generation within plus or minus 5% of modeled in first 12 months
Technical revision rate after customer review — below 10%
BESS commissioning performance within plus or minus 3% of specified parameters

Pay: Up to ₹1,500,000.00 per year

Advantages:
Leave encashment
Paid sick time

Experience:
Solar or hybrid energy system design: 5 years (Preferred)
PVSyst and one BESS sizing tool — Homer Pro, MATLAB: 5 years (Required)

Location:
Chennai, Tamil Nadu (Required)

Work Location: In person

📌 Design Engineer Solar + Bess Chennai (India)
🏢 Radiant Dynamic Services
📍 India