The class action *Ziccarello v. Sanyo Energy (U.S.A.)* centers on certain Sanyo HIP-series solar panels (including HIP‑xxxBA2, BA3, and BA5) that owners say can “delaminate” over time—meaning layers in the panel separate—leading to reduced electricity production. Because solar panels are typically bought with long performance guarantees, the dispute focuses less on initial installation and more on what happens years later when panels visibly degrade and homeowners or businesses notice lower output and higher payback times than expected. Plaintiffs allege Sanyo failed to properly honor its 20‑year limited power warranty for delaminated panels, including by not performing electrical output measurements after customers submitted warranty claims, which would be central to verifying power-loss complaints. The settlement offers replacement panels or prorated cash payments (often calculated from the original purchase price with depreciation, using a $700 default value if the price is unknown) to eligible owners who can show visible damage and provide proof of ownership, with claims generally due by the earlier of 20 years from purchase or December 31, 2029. Its significance is that it underscores how warranty administration—testing protocols, documentation standards, and consistent remedies—can be as important as the written warranty terms for expensive, long-lived energy equipment. More broadly, the case fits a recurring pattern in the solar industry where litigation arises over long-term performance representations, premature degradation, and how manufacturers handle warranty claims—issues that have also surfaced in disputes involving other panel brands and components like inverters. Industry context matters because solar warranties often distinguish between “product” defects (materials/workmanship) and “power” or “performance” guarantees (output over time), and claims can turn on exclusions, maintenance/installation conditions, and evidence of measurable underperformance. While solar panels aren’t regulated like consumer appliances, warranty obligations and advertising claims are still governed by general consumer protection laws and warranty rules (such as federal and state warranty/UDAP frameworks), making documentation, testing, and clear claims-handling procedures critical across the market.