UPDATE 2-Origin Energy says stranded LNG vessel in APLNG facility has departed

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Dec 1 (Reuters) - Australia's Origin Energy said on Friday its LNG vessel that had lost power and was stuck at the Australia Pacific LNG (APLNG) facility has departed.

The power producer reported a power outage on Tuesday at the loaded tanker docked at the Curtis Island facility in APLNG, leading to delays in LNG cargo movement from the joint venture facility.

Origin said an operation to move the vessel to safe anchorage for further repairs was started early on Friday, led by Gladstone Ports and Marine Safety Queensland along with the Australian Maritime Safety Authority.

A total of three LNG cargoes were facing delays as a result of the power outage, the company confirmed on Friday.

Origin had flagged earlier that more LNG cargoes could be deferred as a result of the incident, as the stricken vessel was blocking other tankers from entering the facility off Australia's east coast.

The downstream operator of the APLNG facility, ConocoPhillips, was working on returning the LNG site to normal operations, which is expected to allow cargoes to restart loading overnight, Origin said in its statement.

ConocoPhillips did not immediately respond to a request for comment.

APLNG is a joint venture between ConocoPhillips, Origin Energy, and Sinopec. Origin, Australia's biggest energy retailer, operates APLNG's gas fields, while ConocoPhillips operates the export facility and export sales.

APLNG, which has a capacity of 9 million metric tons per annum (mtpa) of LNG, can only take one vessel at a time and on average loads one tanker every three days.

Its two main customers are China's Sinopec and Japan's Kansai Electric.

Origin in its statement said it would begin ramping up LNG production to return LNG output to normal levels. (Reporting by Poonam Behura; Editing by Maju Samuel and Shailesh Kuber)