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California Cars Are Running on Restaurant Grease

  • Renewable diesel use surges amid low-carbon fuel program
  • Second-biggest source of low-carbon fuel credits after ethanol
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Photographer: TIM SLOAN/AFP via Getty Images
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California’s battle against climate change is being fought more fiercely in fast food restaurants than in Tesla Inc.’s car factory in Fremont.

Seven years after the Golden State began offering credits to producers of low-carbon fuels, cities and companies across California are using diesel brewed from fats and oils to fuel everything from fire trucks to United Parcel Service Inc. delivery vehicles. Now, the value of the credits exceed those from electric vehicles fourfold and are second only to ethanol.