One of Valero's most technologically advanced refineries suffered a complete and sudden shutdown when the waste left by migratory grackles caused a dedicated substation to short out in a light rain. Represented by Mark Maney, Valero sued Central Power & Light Company, which maintained the substation. The case involved complicated legal issues surrounding CP&L's published tariffs, which purported to immunize CP&L from the effects of power outages, and factual issues regarding the causation of the short (CP&L claimed it was caused by lightning, not guano) and Valero's business loss claim. The matter settled for a confidential amount.





