Exhibit

We consent to the incorporation by reference in the registration statements on Form S‑8 (Nos. 333‑138133, 333‑109541, and 333‑81806) and on Form S‑3 (No. 333-189426 and No. 333-204217) of NuStar Energy L.P. of our reports dated February 25, 2016, with respect to the consolidated balance sheets of NuStar Energy L.P. and subsidiaries as of December 31, 2015 and 2014, and the related consolidated statements of income (loss), comprehensive income (loss), partners’ equity and cash flows for each of the years in the three‑year period ended December 31, 2015 and the effectiveness of internal control over financial reporting as of December 31, 2015, which reports appear in the December 31, 2015 annual report on Form 10‑K of NuStar Energy L.P.