BESS Technical Due Diligence Checklist: 12 Critical Checks Before Investing in Battery Storage
Battery Energy Storage Systems are increasingly important for renewable energy integration, grid flexibility and industrial power management. However, evaluating a BESS investment requires more than comparing battery prices or installed capacity.
Investors, project developers and EPC contractors should assess battery sizing, usable energy, degradation, grid integration, safety, warranties and lifecycle costs before making major commitments.
12 Checks for BESS Project Evaluation
Project design basis: Confirm the intended application, discharge duration and required net energy delivery.
Battery sizing: Verify MW, MWh, usable capacity and operating limits.
Battery technology: Review chemistry, supplier data, certifications and operating conditions.
Degradation: Examine capacity-retention assumptions and expected augmentation.
Power conversion system: Check power ratings, efficiency, reactive power and operating limits.
Grid integration: Review connection requirements, protection, metering and grid studies.
Fire safety: Examine the hazard assessment, detection, protection and emergency response arrangements.
Thermal management: Verify cooling requirements and operation under site-specific temperatures.
Controls: Assess the BMS, EMS, SCADA, communications and cybersecurity.
CAPEX and OPEX: Check equipment scope, installation costs, operating expenses and future replacements.
Contracts and warranties: Review performance guarantees, exclusions and interface responsibilities.
Testing and commissioning: Confirm acceptance criteria, performance tests and handover documentation.
Why Independent Engineering Review Matters
A structured technical review helps identify gaps between supplier claims, engineering calculations, contractual guarantees and the financial model. It also helps project stakeholders prioritise issues before procurement, financing and construction.
Read the complete guide: BESS Technical Due Diligence — AlgEnergy Engineering Consultancy Services
AlgEnergy provides multidisciplinary engineering consultancy for renewable energy, BESS, feasibility studies, techno-economic analysis, detailed engineering and EPC tender documentation.
Planning a BESS project? Visit the AlgEnergy website to discuss your engineering consultancy requirements.
