Published 14 October 2026 · Source-linked research prepared with AI assistance. Proposed services require an agreed scope and qualified delivery team.
Define the service before the equipment
List the functions that must continue, the demand they impose and the duration the operator requires. Peak demand, startup behavior, cooling, fuel handling and communications can all matter. A nameplate rating is not a demonstration of the facility’s actual critical-load requirement. The owner and qualified specialist should set the test criterion before looking at the result.
Ask for relevant performance evidence
Collect the approved test scope, equipment configuration, actual load, duration, transfer result and observed problems. Confirm whether the test exercised the required path or only one component. Document usable fuel and the assumptions behind runtime. A resupply contract is a dependency to examine, particularly when nearby customers need the same supplier.
Find the common failure
Two feeds can share a substation or vulnerable corridor. A generator can depend on flooded switchgear or inaccessible fuel. An alternate building can face the same regional event. Map these shared dependencies in language the operator can review, then assign the technical work needed to resolve each uncertainty.
What earns readiness credit
A plan earns less credit than implemented capability. Level 4 for power continuity requires a relevant performance test meeting the declared criterion. Unknown, expired or contradictory evidence remains unassessed. Weatherhill does not prescribe one universal backup duration or replace the facility’s applicable engineering and regulatory requirements.
Sources & further reading
- NIST — Community Resilience Planning Guide A Playbook ↗Guide and current planning resources. Recovery targets tied to community functions and supporting infrastructure.
- CISA Resilience Services ↗Existing voluntary security and resilience assessments and Infrastructure Survey Tool.
- CMS — Core Emergency Preparedness Rule Elements ↗Current guidance page. Four broad preparedness elements; specific provider obligations require current detailed guidance.