A standard solar panel warranty should come with at least 10 years of protection, though many premium options now offer 25 or even 30+ years of coverage. Most solar panel warranties won't reimburse for labor costs associated with installing new equipment or shipping fees for. . Solar panel warranties are one of the most important factors to consider when comparing your panel options, and are critical to protecting your five-figure investment. Even after reviewing extensive documentation, deciphering the disparities between warranties offered by different manufacturers can seem like comparing apples to oranges. . A product warranty is only as good as the entity backing it. Several solar manufacturers have filed for bankruptcy as part of a “solar coaster. Unfortunately, not all solar. .