21 July 2015
Market Announcements Office
ASX Limited
Exchange Centre
20 Bridge Street
Sydney, NSW 2000
Dear Sir

Addendum to ASX Release 20 July 2015

I refer to the Company's ASX announcement of 20 July 2015 titled "AWE reduces Yolla field reserves" a copy of which is attached.
Please find below the qualified petroleum reserves and resources evaluator statement that was inadvertently not included in that release.

Reserves and Resources

The reserve and resource information contained in the Company's announcement on 20 July 2015 titled "AWE reduces Yolla field reserves" is based on and fairly represents information and supporting documentation prepared by and under the supervision of qualified petroleum reserves and resource evaluators: Neil Tupper (General Manager, Exploration and Geoscience) and Dr. Suzanne Hunt (Manager Engineering and Development). Mr Tupper is a Geologist with a Masters Degree in Sedimentology and has over 31 years' experience in petroleum exploration and is a member of the Society of Petroleum Engineers and the American Association of Petroleum Geologists. Dr. Hunt is a Petroleum Engineer with a PhD in Geomechanics and has over 18 years' experience in the petroleum sector and is a member of the Society of Petroleum Engineers. Both have consented in writing to the inclusion of this information in the format and context in which it appears.
Yours sincerely

Neville Kelly Company Secretary AWE Limited

AW E LIMITED LEVEL 16, 40 MOUNT STREET NORTH SYDNEY NSW 2060 AUSTRALIA P +61 2 8912 8000 F +61 2 9460 0176 E [email protected] ABN 70 077 897 440 www.awexplore.com

ASX Announcement

20 July 2015

AWE reduces Yolla field reserves

AWE Limited (ASX: AWE) advises that the Operator of the BassGas Joint Venture in permit T/L1, Origin Energy (ASX: ORG), has provided a preliminary reassessment of reserves for the Yolla field based on new data obtained from the recently drilled Yolla-5 and Yolla-6 development wells.
Interpretation of log and pressure data obtained from Yolla-5 and Yolla-6 has resulted in a reduction in the estimated original gas in place for the field, although further technical work is required to validate this estimate.
Whilst recognising the need for further analysis, AWE has chosen to adopt the preliminary reassessment of the Operator and reduce its share of reported remaining 2P Reserves for the Yolla field by 5.5 mmboe, down to 13 mmboe (as at 30 June 2015). After the recently announced
19.3 mmboe increase in 2P Reserves in the Company's Sugarloaf project, the Yolla reduction represents 5% of the Company's total remaining 2P Reserves of approximately 100 mmboe.
AWE expects to recognise a non-cash impairment of the carrying value for the BassGas asset of between $100 million to $110 million after tax in its full year accounts.
AWE's Managing Director, Bruce Clement, said, "The updated reserves at Yolla will result in less gas production later in the field life, but overall it is not expected to have a material impact on production or cash flow during the next three to four years. We anticipate production from the field will increase to a rate close to the facilities' capacity of 67 TJ/day, once the Yolla-5 and Yolla-6 development wells are brought on-stream.
"AWE will now consider accelerating development feasibility studies for the Trefoil field in adjacent permit T/18P to determine if its 2C Contingent Resources of 17 mmboe (AWE share) can be developed earlier as an incremental project to Yolla production," he said.
Mr Clement added, "AWE will continue to focus on progressing its major development projects, particularly the appraisal drilling and early development of the Waitsia gas project in Western Australia".
AWE will undertake further detailed assessment of the Yolla field reserves prior to the release of its
Reserves and Resources report to be published in the Company's 2015 Annual Report.
The BassGas project consists of the Yolla offshore well head platform connected by pipeline to the gas processing facility at Lang Lang, Victoria. The Yolla platform is located in Bass Strait, approximately 140km offshore from Kilcunda, Victoria.
AW E LIMITED LEVEL 16, 40 MOUNT STREET NORTH SYDNEY NSW 2060 AUSTRALIA P +61 2 8912 8000 F +61 2 9460 0176 E [email protected] ABN 70 077 897 440 www.awexplore.com

About AWE Limited.

AWE Limited is an Australian based energy company focused on upstream oil and gas and related energy opportunities. Established in 1997 and listed on the ASX, the Company is headquartered in Sydney, Australia, with international operating offices in New Zealand and Indonesia. AWE has built a substantial portfolio of production, development and exploration assets in Australia, New Zealand, USA, Indonesia and China. With its strong technical base and disciplined financial management, AWE will continue to pursue exploration, appraisal and development growth opportunities in Australasia and Asia.

For information please see our website www.awexplore.com or contact:

Investor Relations Media Enquiries

Matthew Sullivan Ian Howarth
AWE Limited Collins St Media
02 8912 8022 03 9600 1979
[email protected][email protected]

ENDS

Page 2 of 2