HEP - Holly Energy Partners L.P. 2021 Q2 - Results - Earnings Call Presentation August, 04 2021 10:11 AM Holly Energy Partners L.P. The following slide deck was published by Holly Energy Partners, L.P. in conjunction with their 2021 Q2 earnings call. For further details see: Holly Energy Partners, L.P. 2021 Q2 - Results - Earnings Call Presentation