BESS Due Diligence
BESS Due Diligence for Investors and Lenders
SgurrEnergy provides battery energy storage (BESS) due diligence for investors and lenders, reviewing battery technology and chemistry, degradation and warranty terms, augmentation strategy, safety and fire protection, system design, grid compliance and the revenue and operating assumptions that underpin storage business cases.
What BESS Due Diligence Covers
We focus on the aspects of battery storage that most affect value, risk and bankability.
Technology and chemistry
Review of battery technology, cell chemistry, system architecture and supplier track record.
Degradation and warranties
Assessment of degradation assumptions, capacity maintenance, warranty terms and augmentation strategy.
Safety and fire protection
Review of safety design, fire detection and suppression, and relevant standards and approvals.
System and electrical design
Review of plant design, power conversion, controls and integration with generation where applicable.
Grid compliance
Review of grid connection arrangements and compliance obligations for the storage system.
Revenue and operating assumptions
Review of the technical basis for capacity, cycling and revenue assumptions in the business case.
Who This Is For
BESS due diligence supports parties deploying or financing capital into battery storage.
- Investors and infrastructure funds acquiring standalone or co-located storage.
- Lenders financing battery storage or solar-plus-storage projects.
- Developers and IPPs preparing a storage asset for financing or sale.
- Asset owners seeking an independent technical baseline for an operating BESS.
Why SgurrEnergy for BESS Due Diligence
We combine storage-specific knowledge with independent, decision-focused review.
- Independent advisory with no equipment sales or project ownership interest.
- Direct focus on degradation, augmentation, safety and warranty risk specific to batteries.
- Technical findings linked to revenue assumptions, operating cost and bankability.
- Coverage of standalone BESS, solar-plus-storage and hybrid configurations.
Frequently Asked Questions
Battery storage involves risks not present in conventional generation, including capacity degradation, augmentation strategy, complex warranty terms, safety and fire protection, and revenue that often depends on multiple stacked services. Dedicated BESS due diligence addresses these directly.
Yes. We review degradation assumptions, capacity maintenance, warranty terms and the augmentation strategy needed to maintain contracted capacity over the project life.
Yes. We assess standalone BESS as well as solar-plus-storage and other hybrid configurations, including how the storage integrates with generation and the grid connection.
We focus on the technical basis for revenue, such as available capacity, round-trip efficiency and cycling, so that investors and lenders can judge whether the business case assumptions are technically supportable.
Discuss your BESS due diligence requirement
Tell us about the battery storage project or portfolio and your decision timeline, and we will scope an independent BESS due diligence review around the risks that matter to you.