Renewable Guard Industry Insights

Green Flags For BESS Insurnce
Friday, 24, Oct, 2025
- Published in Industry Insights

The following are green flags associated with cheaper insurance at better terms (while also complying with lender requirements):

SPACING

≥ 8 feet spacing expected between rows of BESS units. This is used to calculate the biggest potential thermal runaway cascade. 

INFORMATION

Site layout with spacing labelled 


Warranties

What is and isn’t included in your BESS, PCS and transformer warranties. The greater the warranty coverage, the lower the risk to insure at lower cost. 

INFORMATION

Site layout with spacing labelled


supplier

A reputable integrator. Is it a reputable cell supporter?

INFORMATION

Technical due diligence report 

Technical specification and/or supply agreement


Grid Connection

We can insure projects connected to either a transmission or distribution grid and up to 1,000m of the cable from site to first non-owned substation. We do need to know: integrator. Is it a reputable cell supporter?

  • If the project has any main power transformers 
  • If so, how many and who is the manufacturer. 
  • Location of first non-owned substation, (i.e. where the project connects to the grid). 
INFORMATION

Layout, Spec Sheets, and coordinates


BMS

Cell-or-module level monitoring, 3rd party monitoring is a bonus

INFORMATION

Technical due diligence report 

Technical specification and/or supply agreement


Revenue Stack

A monthly breakdown of the expected revenue for the policy period. This is for insured revenue in the event of downtime from a claim. 

  • Monthly to capture monthly revenue volatility
  • Breakdown of expected monthly revenue stack.
INFORMATION

Simple Excel summary of stack by month


UL9540A

To Check: 

  • Thermal runaway temperatures sit in typical range for cathode chemistry
  • Minimal spread of thermal runaway between modules.
INFORMATION

Cell, module and unit-level reports


This list is founded on our experience of structuring insurance for over $7 billion of BESS assets around the world. It covers the range of utility-scale project sizes, technology (integrator and cell supplier), cathode chemistry, BMS and control system architecture, warranties and changing revenue stacks.

Units: we define units as the integrated product, be it a container or cabinet 

Want more information on BESS insurance coverage? Reach out to our team today!

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