- What market trends prompted the creation of the new Hail Stow and Risk Evaluation protocol, and how do you see it reshaping risk assessment in the solar industry?
The Hail Stow and Risk Evaluation protocol was born out of a watershed moment in the solar industry: the catastrophic Midway solar farm loss in Texas in 2019. This single event resulted in over 400,000 damaged modules and a staggering $70 million insurance claim, exposing a critical industry blind spot. Prior to this, the industry had deployed vast glass arrays in hail-prone regions without fully understanding the risks or implementing adequate defenses.
The aftermath created what insurers call a “hard market” – premiums skyrocketed while coverage dramatically decreased. Many insurers implemented restrictive sublimits capping hail coverage at just $10-15 million, even for $100 million projects. Since insurance policies typically renew annually, many solar farms found their hail coverage insufficient or completely unavailable, leaving them with unacceptable levels of risk exposure.
To address this crisis, VDE Americas partnered with kWh Analytics to develop the Hail Stow and Risk Evaluation framework, giving insurers standardized criteria to assess a project’s hail readiness while providing operators with practical tools for risk mitigation. This collaboration is fundamentally reshaping solar industry risk assessment by establishing clear guidelines for resilient design and offering financial incentives through premium reductions for projects demonstrating effective hail defenses.
For the first time, we’re seeing a systematic approach to quantifying and mitigating hail risk that aligns interests across developers, operators, and insurers – transforming hail from an unquantifiable threat to a manageable risk.
- With insurance costs being a growing concern for solar developers, how can this new hail resiliency report card impact project bankability and financing decisions?
The Hail Stow and Risk Evaluation form serves as a critical tool for demonstrating hail defense functionality to both insurance underwriters and financiers. By providing transparent documentation of a project’s hail resilience measures, it allows for more accurate risk assessment and potentially more favorable insurance terms – similar to how safe driver records affect auto insurance premiums.
The impact on financing decisions is often binary rather than incremental. Many financiers have completely withdrawn from high-hail-risk areas due to uncertainty around both risk characterization and the reliability of monitoring and stow systems. The standardized evaluation protocol provides the certainty these financiers need to potentially re-enter these markets, making the difference between a project receiving funding or not, rather than merely affecting pricing terms.
Insurance industry data shows that while hail represents less than 2% of solar project insurance claims by volume, it accounts for more than 50% of total dollar losses. By properly documenting and implementing hail mitigation strategies, developers can demonstrate to financiers that these outsized risks are being actively managed.
This framework allows for more accurate risk estimation in financial models, helping confirm insurance coverage adequacy, operating expenses for deductibles, and exposure beyond insurance. With reliable assessment tools, financiers can make informed decisions about projects in hail-prone regions rather than avoiding them entirely due to unquantifiable risks.
- From a market adoption perspective, what incentives do insurers and financiers now have to back solar projects that adopt these best practices in hail-prone regions?
Insurers and financiers are inherently motivated to provide coverage and financing to utility-scale solar projects because they represent lucrative business opportunities while helping meet ESG goals and reducing greenhouse gas emissions. These projects benefit both people and the planet, aligning with the growing emphasis on responsible investing.
The financial incentives are compelling – hail damage to solar farms averages $58.4 million per claim, but proven mitigation efforts can dramatically reduce this exposure. The data-driven risk modeling approach leverages radar-based weather data and equipment-specific hail resiliency characteristics to create a precise assessment framework that rewards resilient design and operational excellence.
Real-world evidence now demonstrates the effectiveness of these practices. Forensic investigations have shown that proper hail stow protocols successfully prevented widespread damage at several utility-scale solar farms exposed to the same severe hailstorms that decimated unprotected projects – even during 1-in-500-year events in Texas.
With concrete evidence that properly implemented hail defense systems work, insurers and financiers can offer more favorable terms to projects adopting these practices, creating a positive feedback loop that encourages best practices and potentially expands solar development in previously high-risk areas.
- How do you envision this initiative influencing solar development in high-risk geographies like Texas and the Midwest, where hail events are increasingly common?
Ultimately, this kind of data from VDE Americas’ Hail Intelligence suite can help existing solar developments in Texas and the Midwest and can de-risk new developments.
- As climate risks become more central to project planning, do you see tools like the Hail Stow protocol becoming industry standard—and what does that mean for the future growth and resilience of the solar market?
The collaboration between VDE Americas and kWh Analytics represents a significant shift in how the industry approaches hail risk, establishing clear guidelines for resilient design and operations while creating financial incentives for projects that demonstrate effective hail defenses.
As the solar industry continues to prove its ability to mitigate hail risk through comprehensive protocols, we’re strengthening not only physical infrastructure but also relationships with insurance providers and financiers who are increasingly requiring these risk assessment and mitigation strategies.
Unlike building fire sprinklers, hail monitoring and stowing are not currently required by code. Hopefully, it will eventually become standardized as codes develop and Authorities Having Jurisdiction adopt them. Before that happens, it’s essential for all stakeholders—owners, operators, financiers, insurers, and communities relying on the power—to require these defenses. The industry is evolving from non-existent as the worst and reactive as the best damage control to sufficient proactive risk management, enhancing the overall resilience of the solar market. As climate risks continue to evolve, the lessons learned from hail risk management will likely extend to other climate-related challenges, further strengthening the industry’s ability to adapt and thrive in an increasingly volatile climate.
