Greka Energy, legally HVI Cat Canyon Inc., is a privately held company engaged in hydrocarbon exploration principally in Santa Barbara County, California. Formed in 1999 after the acquisition and merger of several smaller firms, it is a subsidiary of Greka Integrated, Inc., a holding company headquartered in Santa Maria, California, and is wholly owned by Randeep Grewal. In May 2011, the company changed its name from Greka Oil & Gas Inc. to HVI Cat Canyon Inc.