BESS, EMS & Microgrid Expert

Feasibility and system design

● Lead feasibility studies for BESS and microgrid opportunities: load profiling, tariff and demand-charge analysis, diesel displacement, and techno-economic modelling (LCOE / LCOS, IRR, payback).

● Size BESS (power and energy), PV and genset capacity for hybrid and off-grid systems, including degradation, augmentation strategy and end-of-life planning.

● Define system architecture: AC- vs DC-coupled, PCS selection, grid-following vs grid-forming operation, black-start and islanding capability.

● Specify EMS / microgrid controller functions: peak shaving, load shifting, PV smoothing and ramp-rate control, spinning-reserve replacement, frequency and voltage support, and genset dispatch optimization.

Grid integration and compliance

● Lead grid-connection and interconnection studies (load flow, short circuit, protection coordination, dynamic/stability studies) and ensure compliance with PLN grid code and SPLN requirements.

● Ensure designs comply with applicable standards for battery safety and fire protection (e.g. IEC 62933, IEC 62619, UL 9540 / 9540A, NFPA 855) and Indonesian K3 / electrical safety regulations.

Procurement and vendor management

● Prepare technical specifications and RFQs for battery systems, PCS, EMS/controllers, transformers and switchgear.

● Run technical bid evaluations and vendor due diligence (cell supplier, factory audits, warranty and performance guarantee terms, LTSA/O&M scope).

● Negotiate and review technical schedules of supply and EPC contracts, including availability, round-trip efficiency and capacity-retention guarantees.

Operations and performance

● Define performance KPIs (availability, Performance Ratio, Energy Absorption, RTE, SoH, diesel saved, curtailment, BESS Utilization) and monitoring/SCADA requirements.

● Analyse operational data to optimise dispatch strategy, track degradation against warranty curves, and support warranty claims.

Business development and team support

● Support BD and proposal teams with technical solutions, budgetary pricing and client presentations for C&I, mining, industrial and island-grid clients.

● Build internal BESS capability: templates, design standards, lessons learned, and mentoring of junior engineers.

Expected deliverables

● Feasibility and sizing reports with techno-economic models for each opportunity.

● Basic and detailed design packages: SLDs, protection philosophy, layouts, control and EMS functional specifications.

● Grid-connection study reports and PLN submission packages.

● Technical specifications, RFQ packages and bid evaluation reports.

● Fire and hazard risk assessments and safety design basis.

● FAT/SAT and commissioning test procedures and reports.

● Performance and degradation reports for operating assets.

● In the first 12 months: an in-house BESS design and procurement standard for the company.

● Minimum 3 years of direct, hands-on BESS and microgrid experience, within a total of roughly 6+ years in power systems, renewable energy or electrical engineering.

● Delivered at least two BESS or hybrid microgrid projects from design through commissioning (ideally ≥1 MWh each), with a clear personal role in sizing, design or commissioning.

● Experience with at least one of: solar-plus-storage hybrid, diesel-hybrid / off-grid microgrid, or C&I behind-the-meter BESS.

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