Beach Energy Limited is an Australian oil and gas exploration and production company based in Adelaide, South Australia. Formerly known as Beach Petroleum, the company changed its name to Beach Energy in December 2009. It is a component of the S&P/ASX 200 index of major Australian companies and in 2020 was the second largest oil producer in Australia after Woodside Petroleum. In 2014, Beach Energy was the largest onshore oil producer in Australia. In November 2016, Beach Energy announced a Western Flank oil discovery within the Poolowanna Formation in ex PEL 91 (Beach 100%).