Resilience measures
Purpose
The resilience model estimates how much a measure reduces physical-damage losses, and how fast the measure pays back its cost.
Inputs: the measures
| Hazard / technology | Measure | Modeled change |
|---|---|---|
| Hail / solar | Dynamic hail stow | Tilts modules before hail arrives. |
| Convective wind / solar | Safe-stow control | Changes wind loading on trackers. |
| Hurricane / solar | Higher-uplift modules and mounting | Improves wind resistance. |
| Convective wind / wind | Certified extreme-wind turbine class | Changes wind resistance. |
| Hurricane / wind | Backup-powered yaw and storm parking | Changes wind loading. |
| Wildfire / solar | Low-fuel defensible space | Reduces modeled fire intensity. |
| Flood / solar | Raised critical electrical equipment | Reduces modeled water exposure. |
Method
The model runs the same simulated events before and after a measure. So the difference in loss comes from the measure, not from a different set of events. Where it applies, the model includes the probability that a measure does not operate.
Simple payback (years) = measure cost ÷ modeled annual premium saving
Example: a $2M measure with a $0.5M annual premium saving has a simple payback of four years.
Outputs
Loss removed (Hazard Loss percentage points), VaR-95 removed, measure cost, premium saving and simple payback. See the Metrics dictionary.
At each scale
| Scale | What runs |
|---|---|
| Screening | For each asset type, the reductions in EAL and Climate VaR for each measure, for the reference plant. The Resilience view shows these as “With measures” values. |
| Asset-specific | Measures in a what-if Scenario for one asset, with measure cost, premium saving and payback. |
Assumptions
- “With measures” applies every modeled measure at the same time.
Limitations
- “With measures” is a modeled comparison. It does not show that a measure is installed, possible at the site or worth its cost.
- Simple payback is a cost-recovery calculation. It is not a full investment appraisal or an insurer’s commitment to reduce the premium.
For all limitations, see Limitations.
Validation
Version
Applies to methodology version 1.0, September 2026.