ORIGIN ENERGY LIMITED — Capital/Financing Update 2013

Jul 28, 2013

==> picture [53 x 69] intentionally omitted <==

To Company Announcements Office Company ASX Limited From Helen Hardy	Facsimile 1300 135 638
	Date 29 July 2013
	Pages 3

Subject ORG – Production commences from Otway Gas Project’s Geographe field

Please find attached a release on the above subject.

Regards

==> picture [122 x 69] intentionally omitted <==

Helen Hardy Company Secretary

02 8345 5023 – helen.hardy@originenergy.com.au

Origin Energy Limited ACN 000 051 696 • Level 45 Australia Square, 264-278 George Street, Sydney NSW 2000 GPO Box 5376, Sydney NSW 2001 • Telephone (02) 8345 5000 • Facsimile (02) 9252 1566 • www.originenergy.com.au

==> picture [47 x 65] intentionally omitted <==

ASX/Media Release

29 July 2013

Production commences from Otway Gas Project’s Geographe field

Origin Energy Limited (Origin), on behalf of the VIC/L23 Joint Venture, today announced the commencement of production from Otway Gas Project’s newly developed Geographe gas field in Bass Strait following commissioning and testing.

Otway Gas Project consists of two offshore gas fields, Geographe and Thylacine, and an onshore gas processing facility near Port Campbell in south-west Victoria.

Development of the Geographe gas field, which commenced following Joint Venture approval in October 2011, comprised development well drilling and installing subsea facilities to connect Geographe to Otway Gas Project’s existing subsea pipeline. In addition, the project’s onshore facility, Otway Gas Plant, was upgraded to accommodate a 50 per cent increase in its liquefied petroleum gas (LPG) storage capacity.

Origin Chief Executive Officer Upstream, Mr Paul Zealand said, “Since 2007, Otway Gas Project has played an important role in meeting southern Australia’s demand for natural gas, LPG and condensate.

“The development of Geographe enables gas production to Otway Gas Plant to be maintained, thereby ensuring the project continues to make a major contribution to Victoria’s energy security. Production from Otway Gas Plant is equivalent to 22 per cent of Victoria’s domestic gas demand.

“The commencement of production from Geographe also supports Origin’s other energy investments in the region including the State’s largest gas-fired power station at Mortlake as well as our position as one of Victoria’s largest energy retailers,” Mr Zealand said.

The Geographe gas field is located in Victorian coastal waters 55 kilometres south of Port Campbell and 15 kilometres north of the Thylacine offshore platform.

VIC/L23 Participating Interests:

Origin Energy Resources Ltd * - Operator (67.23%) Benaris International Pty Ltd (27.77%) Toyota Tsusho Gas E&P Otway Limited (5.0%)

• a wholly owned subsidiary of Origin Energy Limited

1/2

Origin Energy Limited ABN 30 000 051 696 • Level 45 Australia Square, 264-278 George Street, Sydney NSW 2000 GPO Box 5376, Sydney NSW 2001 • Telephone (02) 8345 5000 • Facsimile (02) 9252 1566 • www.originenergy.com.au

==> picture [47 x 65] intentionally omitted <==

For further information please contact:

Media Investors Anneliis Allen Chau Le Senior External Affairs Manager Group Manager, Investor Relations Ph: +61 2 8345 5119 Ph: +61 2 9375 5816 Mobile: +61 428 967 166 Mobile: +61 467 799 642

About Origin Energy

Origin Energy (ASX: ORG) is the leading Australian integrated energy company focused on gas and oil exploration and production, power generation and energy retailing. A member of the S&P/ASX 20 Index, the company has more than 5,800 employees and is a leading producer of gas in eastern Australia. Origin is Australia's largest energy retailer servicing 4.3 million electricity, natural gas and LPG customer accounts and has the country's largest and one of the most flexible generation portfolios with approximately 5,900 MW of capacity, through either owned generation or contracted rights. Origin's strategic positioning and portfolio of assets provide flexibility, stability and significant opportunities for growth across the energy industry. Through Australia Pacific LNG, its incorporated joint venture with ConocoPhillips and Sinopec, Origin is developing one of Australia's largest CSG to LNG projects based on Australia's largest 2P CSG reserves base.

In New Zealand, Origin is the major shareholder in Contact Energy, the country's leading integrated energy company, operating geothermal, thermal and hydro generation facilities and servicing electricity, gas and LPG customers across both the North and South islands. Origin also operates several oil and gas projects in New Zealand and is one of the largest holders of petroleum exploration acreage in the country.

Origin has a strong focus on ensuring the sustainability of its operations, is the largest green energy retailer in Australia and has significant investments in renewable energy technologies.

For more information go to www.originenergy.com.au

2/2