The Corpus Christi East and West refineries in Nueces County, Texas, have combined capacity of 370,000 barrels per day and are operated by Valero Refining-Texas, L.P. The Valero East plant connects to an AEP Texas substation in the ERCOT region, where a 200 MVA 138/69-kV autotransformer was proposed.

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Overview

The East and West refineries have combined capacity of 370,000 barrels per day. The East refinery processes sour crude oil, and the West refinery processes sweet crude oil, sour crude oil and residual fuel oil. The refineries produce gasoline, aromatics, jet fuel, diesel and asphalt.

Profile

Electricity and grid: AEP Texas owns and operates transmission facilities within the Electric Reliability Council of Texas region. AEP Texas proposed a transmission line from its Champlin Substation to its Valero East Substation on the Valero Refinery property. A Texas PUC filing describes expanding the existing Valero East 69-kV substation to add a new box bay and a 200MVA, 138/69kV auto transformer. ERCOT's 2019 review of the Nueces 69 kV system noted that contingencies could result in consequential loss of the large industrial loads (~150 MW). FERC's EIA cross-reference lists Corpus Christi West generators TG1 and TG2 at 28.6 MW and PRU at 12 MW, and East generators GEN1 and GEN2 at 20 MW.

Ownership and permits: EPA's registry lists Valero Refining-Texas, L.P. as the operator, with Valero Energy Corporation as parent company. The West plant holds Federal Operating Permit O1458, issued January 30, 2019. TCEQ is considering a permit to continue operation of the Valero Corpus Christi Refinery East Plant, including storage tanks, heaters and refinery fugitives.