INSIGHTS & EVIDENCE
A resilient asset still depends on its surroundings
Power, communications, water and access routes can fail together. Investment screening needs to look beyond the asset boundary.
Source report: 1 September 2026 · xIntegra interpretation updated 16 October 2026
The finding
The SSI cascade report explores how a disruption can spread between infrastructure systems. Its scenario work shows why an intervention that improves one part of a system can leave another dependency unresolved.
The EEA’s European Climate Risk Assessment separately addresses compound hazards and risks that spread across sectors. For an owner, this is a reason to examine dependencies together instead of adding isolated risk scores.
What this changes for your decision
Map the services the asset needs to remain operational, then ask what happens if two are unavailable at once. Compare the operating and financial effect of alternative mitigations. A battery can contribute, but reserve duration, control arrangements and the loads it can actually support determine the outcome.
Ask how long the service can continue
A list of nearby facilities is a starting point, not a verified dependency map. For each material dependency, establish the responsible organisation, the service required, the available backup and the evidence for recovery assumptions. Geographic proximity alone does not show which substation supplies a hospital or which communication path controls a battery.
The useful commercial question is the duration of service that can be maintained under a defined scenario. If power returns but communications or access remain unavailable, the asset may still be unable to perform its contracted role. A review should therefore distinguish equipment protection, continuity of service and the time needed to resume normal operation.
Make the reserve and its cost visible
Consider a purely illustrative BESS decision: keep more energy available for a continuity service or use it for trading. The comparison needs the required reserve, the customer's payment, any foregone trading income, technical restrictions and the consequences of failing to deliver. The same stored energy cannot be promised to two incompatible services at once. A financial model that overlooks that conflict can make both businesses appear stronger than the feasible operating plan.
The resulting assessment can compare a reserve policy, an alternative communication arrangement or another site configuration. It should identify who can implement each measure and what remains outside the owner's control. For investors, this produces a more useful diligence question than a generic resilience score: which dependency can undermine the investment case, and what proportionate action changes that outcome?
What a project review can deliver
- A dependency map connecting the asset to power, communications, water and access.
- A small set of stress scenarios and their consequences for operation and cash flow.
- A prioritised resilience action list with evidence, owner and review trigger.
These are decision scenarios, not predictions of a named failure. Backup and islanding capability require a suitable technical design and operational validation.
Sources & reading
Report background: SSI Index, F-02, “The 2026 European Heatwave: The Cascade and Compound Layer Beyond the First Wave”, 1 September 2026. Scenarios are used to frame decisions, not as completed customer outcomes.
External evidence: EEA, European Climate Risk Assessment: scope and key findings, 2024.