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How long does a large-scale industrial battery project take from feasibility to commissioning?

Project timelines vary based on capacity (MWh scale), interconnection complexity, and utility approvals.

UpdatedJune 2026
Read time4 min read
CategoryCommercial Battery Storage
Reviewed byGI Engineering
Clear answer

Clear answer, explained.

Typical phases include: Feasibility & Load Analysis (2–6 weeks) Interval data review, tariff modelling, and sizing. Engineering & Design (4–8 weeks) Electrical design, protection studies, and permitting documentation. Procurement & Approvals (6–16 weeks) Equipment lead times and utility interconnection review. Installation & Commissioning (4–8 weeks) Site works, integration, testing, and system commissioning. Projects involving medium-voltage interconnection, switchgear upgrades, or microgrid functionality may extend timelines.


Key points

What this means in practice.

  • Typical total timeline: 4–9 months
  • Larger
  • MWh systems may require extended engineering
  • Utility interconnection often drives schedule
  • Equipment lead times affect delivery
  • Commissioning includes testing, protection coordination, and training

When this applies

Best-fit environments.

  • Industrial battery systems ≥ 500 kWh to multi-MWh
  • Facilities requiring demand reduction or resilience
  • Solar-plus-storage or hybrid microgrid projects
  • Sites requiring utility interconnection studies

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