Key Challenges for the Region
Compound Severe Weather Exposure: Severe convective storms can combine high winds and destructive hail, creating simultaneous damage across a solar plant and increasing the overall financial impact.
Extended Operational Disruption: Damage to trackers and PV modules can significantly reduce power generation, prolonging downtime and increasing PPA under-delivery penalties.
Fragmented Insurance Protection: Separate wind and hail sub-limits, high deductibles and restrictive Business Interruption coverage can leave solar operators exposed when multiple perils occur during the same event.
Key benefits of parametric insurance
When straight-line wind and hail occur simultaneously, solar operators can face overlapping physical damage, business interruption and contractual exposures. Traditional property programs may treat each peril separately, leaving gaps when losses exceed individual sub-limits or when recovery is prolonged.
Descartes’ Parametric Wind & Hail Insurance: Integrated Protection for Severe Convective Storms
Descartes’ integrated parametric solution combines site-level wind measurements from Nextpower’s meteorological stations with ground-based radar data for hail. By covering both perils under a shared limit and using objective event triggers, the solution provides rapid liquidity aligned with the severity of the storm, without requiring traditional physical loss adjustment.
case study example
Multi-Peril Parametric Wind & Hail Solution for a Solar Plant in Texas
A Texas solar plant with a $150 million total insured value (TIV) and a 5% wind and hail deductible faced a severe convective storm involving both high winds and destructive hail. The combined event compromised more than 20% of the site's modules, reduced plant output by more than 40% for several months and triggered significant PPA breaches.
Problem
The operator was responsible for the first $7.5 million of physical losses before receiving traditional insurance indemnity. Damage to structural trackers and PV modules also extended the plant's recovery period, while weather-driven Business Interruption coverage was subject to a sub-limit and lengthy waiting period. Separate wind and hail sub-limits created additional residual exposure if losses exceeded the available limits for either peril.
Solution
The operator deployed Descartes’ integrated multi-peril parametric program, covering both straight-line wind and hail under a shared $50 million limit. The solution combined real-time wind data from Nextpower’s on-site meteorological stations with ground-based radar data measuring Maximum Estimated Size of Hail (MESH). When the storm produced 100+ mph straight-line winds and hail exceeding 2.25 inches, both independent triggers were activated.
Result
Descartes confirmed the event and released a $16.75 million payout within weeks, representing 33.5% of the $50 million shared limit: $8 million from the straight-line wind component and $8.75 million from the hail component. The liquidity helped offset the traditional $7.5 million deductible, fund PPA under-delivery penalties and stabilize cash flow during the recovery period.

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