The Pembroke Refinery is an oil refinery situated on the Pembrokeshire coast in Wales at Rhoscrowther in the community of Hundleton. It first came on stream in 1964. The refinery has a fluid catalytic cracking unit that came on stream in 1982. The refinery also has an HF Alkylation unit, catalytic reforming unit and three hydrotreating type units. Pembroke refinery has the capability of refining high Total Acid Number crude oils like Captain and Doba crudes.
The refinery occupies a prominent position on the south bank of the Milford Haven Waterway and can be seen for many miles. Around a quarter of the site is within the Pembrokeshire Coast National Park which was created in 1952.
The refinery was initially owned by the Regent Oil Company, a large domestic marketer of Trinidad-produced oils. Regent was fully acquired by Texaco in 1956 (although the brand name was only phased out in the UK in favour of Texaco in the late 1960s). Today the refinery is owned and branded by the Valero Energy Corporation.
In August 1992, Texaco offered to purchase the entire village of Rhoscrowther which lies immediately adjacent to the refinery. Many of the residents accepted the offer - especially after a large explosion which occurred two years later - which included their properties being purchased at market price plus reasonable expenses. Once the properties were acquired by the refinery, they were demolished. Today, only five houses, a 14th-century church and an abandoned farm are all that remain of Rhoscrowther.