NuStar Energy Investor Conference Presentation Deck

BUILDING RESILIENCE: RENEWABLE FUELS HANDLING LEADER NuStar Now Handles a Significant Proportion of California's Growing Renewable Fuels Market NuStar's Share of California's Renewable Fuels Market (Full-Year 2020 Total Volume¹) 7% |BIO | BIODIESEL 18% 1 - Most recent available data Source: California Air Resource Board (CARB) NuStar yo ETHANOL 28% We expect these percentages to increase through 2023, along with associated EBITDA, as we complete additional projects currently in planning stages or under construction Responsibly Resilient RENEWABLE DIESEL 13

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