2015 ANNUAL GENERAL MEETING

21 October 2015

Important NoticesSummary information

The material that follows is a Presentation of general background information about Origin's activities current at the date of the Presentation, 21 October 2015. It is information given insummary form and does not purport to be complete. It is not intended to be relied upon as advice to investors or potential investors and does not take into account the investment objectives,financial situation or needs of any particular investor. The information in this Presentation includes information derived from third party sources that has not been independently verified.

Forward looking statements

This Presentation contains forward looking statements, including statements of current intention, statements of opinion, guidance and predictions as to possible future events. Forward lookingstatements can generally be identified by the use of words such as “project”, “foresee”, “plan”, “expect”, “aim”, “intend”, “anticipate”, “believe”, “estimate”, “may”, “should”, “will” or other similarexpressions. Such statements are not statements of fact and there can be no assurance or certainty of outcome in relation to the matters to which the statements relate. These forwardlooking statements involve known and unknown risks uncertainties assumptions contingencies and other important factors that could cause the actual outcomes to be materially differentlooking statements involve known and unknown risks, uncertainties, assumptions, contingencies and other important factors that could cause the actual outcomes to be materially differentfrom the future events or results expressed or implied by such statements.Those risks, uncertainties, assumptions, contingencies and other important factors are not all within the control of Origin and cannot be predicted by Origin and include changes incircumstances or events that may cause objectives to change as well as risks, circumstances and events specific to the industry, countries and markets in which Origin and its related bodiescorporate, joint ventures and associated undertakings operate. They also include general economic conditions, exchange rates, interest rates, regulatory environments, competitive pressures,selling price, market demand and conditions in the financial markets which may cause objectives to change or may cause outcomes not to be realised. Investors should refer to the Key Riskssection of this Presentation for a non-exhaustive list of other factors that could cause actual results or performance to differ materially from any forward looking statements.

None of Origin nor any of its respective subsidiaries, affiliates and associated companies (or any of their respective officers, employees or agents) or any other person (including anyunderwriter and its affiliates and related bodies corporate and each of their directors, officers, partners, employees, advisers and agents (Beneficiaries)) (the Relevant Persons) makes anyrepresentation warranty assurance or guarantee as to the accuracy or completeness of all or part of this Presentation or any constituent or associated Presentation information or materialrepresentation, warranty, assurance or guarantee as to the accuracy or completeness of all or part of this Presentation, or any constituent or associated Presentation, information or material,or the accuracy or likelihood of fulfilment of any forward looking statement (or any outcomes expressed or implied in any forward looking statements), forecast, prospect or return contained inor implied by the information in this Presentation or any part of it. The forward looking statements in this report reflect views held only at the date of this Presentation.

Statements about past performance are not necessarily indicative of future performance.Except as required by applicable law, regulation or the ASX Listing Rules, the Relevant Persons disclaim any obligation or undertaking to publicly update any forward looking statements,whether as a result of new information or future events or otherwise.

Financial data

All dollar values are in Australian dollars (A$) unless otherwise stated.Investors should be aware that certain financial data included in this Presentation are “non-GAAP financial measures” under Regulation G of the U.S. Securities Exchange Act of 1934. Thesemeasures include EBITDA, EBIT, NPAT (pre and post Individually Significant Items), Working Capital, Free Cash Flow and Net debt.

In addition, such measures may be "non-IFRS financial information" under Regulatory Guide 230 Disclosing non-IFRS financial information published by ASIC. The disclosure of such non-GAAP financial measures in the manner included in the Presentation may not be permissible in a registration statement under the U.S. Securities Act. These non-GAAP financial measures donot have a standardized meaning prescribed by Australian Accounting Standards and therefore may not be comparable to similarly titled measures presented by other entities, and should notbe construed as an alternative to other financial measures determined in accordance with Australian Accounting Standards. Although Origin believes these non-GAAP financial measuresprovide useful information to users in measuring the financial performance and condition of its business, investors are cautioned not to place undue reliance on any non-GAAP financialmeasures included in this presentationmeasures included in this presentation.

2

Important NoticesNo offer of securities

This Presentation does not constitute investment, legal, tax or other advice, or an inducement or recommendation to acquire or dispose of any securities in Origin, in any jurisdiction.

Not for release or distribution in the United States of America

This Presentation may not be released or distributed in the United States.

This Presentation does not constitute an offer to sell, or a solicitation of an offer to buy, any securities in the United States.

The distribution of this Presentation in other jurisdictions outside Australia may also be restricted by law and any such restrictions should be observed. Any failure to comply with suchrestrictions may constitute violation of applicable securities lawsrestrictions may constitute violation of applicable securities laws.

Reserves

The statements in this Presentation relating to reserves and resources have been compiled by Andrew Mayers, a full-time employee of Origin. Andrew Mayers is qualified in accordance withASX listing rule 5.11 and has consented to the form and context in which these statements appear. Reserves quoted here have been compiled in a manner consistent with the PetroleumResources Management System 2007 published by Society of Petroleum Engineers (SPE). This document may be found at the SPE website. Investors should note however that differentreserves reporting systems employ different definitions and permit or require different assumptions and that Origin’s methodologies for classifying reserves and its reserve classifications varyin certain respects from the methodologies and classifications used by companies subject to the reporting obligations of the SEC, including the reporting requirements set out in SEC IndustryGuide 2, Regulations S-K and S-X under the U.S. Securities Act and related SEC disclosure requirements. As a result, identical geological and engineering data can produce varying estimatesof reservesof reserves.

This Presentation contains disclosure of Origin and APLNG’s reserves and resources are as at 30 June 2015. These reserves and resources were announced on 31 July 2015 in Origin’sAnnual Reserves Report for the year ended 30 June 2015 (Annual Reserves Report). Origin confirms that it is not aware of any new information or data that materially affects the informationincluded in the Annual Reserves Report and that all the material assumptions and technical parameters underpinning the estimates in the Annual Reserves Report continue to apply and havenot materially changed. Petroleum reserves and contingent resources are typically prepared by deterministic methods with support from probabilistic methods. Petroleum reserves andcontingent resources are aggregated by arithmetic summation by category and as a result, proved reserves (1P reserves) may be a conservative estimate due to the portfolio effects of thearithmetic summation. Proved plus probable plus possible (3P reserves) may be an optimistic estimate due to the same aforementioned reasons.

Some of Australia Pacific LNG CSG reserves and resources are subject to reversionary rights to transfer back to Tri-Star a 45% interest in Australia Pacific LNG’s share of those CSGinterests that were acquired from Tri-Star in 2002 if certain conditions are met Approximately 22% of Australia Pacific LNG’s 3P CSG reserves as of 30 June 2015 are subject to theinterests that were acquired from Tri-Star in 2002 if certain conditions are met. Approximately 22% of Australia Pacific LNG s 3P CSG reserves as of 30 June 2015 are subject to thereversionary rights. If reversion occurs this may mean that reserves and resources that are subject to reversion are not available for Australia Pacific LNG to sell or use after the date ofreversion. In October 2014, Tri-Star filed proceedings against Australia Pacific LNG claiming that reversion has occurred. Australia Pacific LNG will defend the claim. The claim was served on20 October 2015. Australia Pacific LNG will defend the claim.

Further information regarding the formulation of Origin’s reserves may be found in Origin’s Operating and Financial Review released to the ASX on 20 August 2015 and its Annual ReservesReport released to the ASX on 31 July 2015.

3

The Board

John AkehurstIndependent Non executive DirectorIndependent Non-executive Director

4

The Board

Helen Nugent AOIndependent Non executive DirectorIndependent Non-executive Director

5

The Board

Steve SargentNon executive DirectorNon-executive Director

6

The Board

Maxine Brenner Independent Non executive DirectorIndependent Non-executive Director

7

The Board

Grant KingManaging DirectorManaging Director

8

The Board

Helen HardyCompany SecretaryCompany Secretary

9

The Board

Scott PerkinsIndependent Non executive DirectorIndependent Non-executive Director

10

The Board

Karen MosesExecutive Director Finance and StrategyExecutive Director, Finance and Strategy

11

The Board

Bruce MorganIndependent Non executive DirectorIndependent Non-executive Director

12

2015 ANNUAL GENERAL MEETING2015 ANNUAL GENERAL MEETING21 October 2015

13

CHAIRMAN’S ADDRESS

14

Until recently, share price has tracked oil ...

100.00

110.00

120.00

70 00

80.00

90.00

40 00

50.00

60.00

70.00

40.00

Origin S&P ASX 100 A$ Brent

15

Commodities downturn has affected share prices of companies across our sector

100.00

110.00

120.00

60 00

70.00

80.00

90.00

30.00

40.00

50.00

60.00

20.00

Origin Company 1 Company 2 Company 3 Company 416

APLNG will be competitive even at very low oil prices1

35

40

45 US$38-42

20

25

30

35

$/bo

e1

US$23-25

5

10

15

20

US

0Operating breakeven Distribution breakeven

17

(1) APLNG is expected to have an operating breakeven of US$23-25/boe and a distribution breakeven of US$38-42/boe oil on average during steady state operations from FY2017 (based on an average AUD/USD of $0.70). It is not expected that tax will be payable at the breakeven oil price over this period. Notes: - Cash distributions received in FY2017 from APLNG are expected to be less than those expected in subsequent years. This is due to initial timing of half yearly distributions resulting in the last three

months of FY2017 cash flow distributed in the following year and the requirement to fund the project finance reserve account in FY2017- At low oil prices, distribution from the downstream project may be restricted if certain project finance metrics are not satisfied

92% INSTITUTIONAL OFFER TAKE UP VOTE OF92% INSTITUTIONAL OFFER TAKE-UP – VOTE OF CONFIDENCE IN ORIGIN’S FUNDAMENTALS

18

FIRST LNG PRODUCTION BY AUSTRALIA PACIFIC LNG NOW WEEKS AWAY

19

We aspire to be Number 1 in solar

WE ASPIRE TO BE A LEADER IN SOLAR

2020

Origin first energy company globally to make commitments aligned with all 7 ‘We Mean Business Coalition’ climate change initiatives

Our commitments are:Climate change reporting

Responsible engagement on climate policy

Adopting a science-based reduction target

Pricing carbon to support abatement

Become leading renewable and low carbon energy provider. g gy pProcure 100% of electricity from renewable sources for our offices and other operations by 2050

Reducing short-lived climate pollutants

Removing commodity-driven deforestation

21

MANAGING DIRECTOR’S ADDRESS

22

Origin has announced and begun to implement up to $6.9 billion of initiatives to strengthen the balance sheet

Initiatives Realised in FY2015

Target in FY2016

Target in FY2017 Cumulative Total

Previously announced initiatives

Energy Markets – reduction in operating costs1 $35m $100m $100m $235m

Energy Markets – reduction in capital expenditure - $50m $50m $100m

Proceeds realised from sale of Contact Energy - ~$1,600m - ~$1,600m

Group wide – reduction in functional costs - - $200m $200m

June 2015

August2015

Total previous initiatives $35m $1,750m $350m $2,135m

Further initiatives announced

Entitlement Offer ‐ $2,500m ‐ $2,500m

Reduction in dividend payments - $210m $210m2 $420mSeptember

2015 Reduction in dividend payments $210m $210m $420m

Further reduction in capex and working capital - $485m $510m $995m

Planned asset sales - $800m $800m

Total new initiatives $4,715m

TOTAL INITIATIVES $6 850

2015

23

TOTAL INITIATIVES $6,850m

(1) Natural Gas and Electricity operating costs(2) Includes FY2017 final dividend that is expected to be paid in FY2018

Our Energy Markets business

Flexible and diverse 6,000 MW A growing solar businessLeading market share position generation portfoliowith 4.3 million customer

accounts

24

Energy Markets mature and stable with strong surplus cash flows

Energy Markets Segment Operating Cash Flow less Growth Capex EBIT / Sales Margin

15%1 000$m

10%

15%

600

800

1,000

5%

200

400

(1) Adjusted for carbon impact

0%FY2012 FY2013 FY2014 FY20151 1

1

0FY2012 FY2013 FY2014 FY2015

25

Flexible and diverse fuel and generation portfolio supplies 4.3 million Electricity and Natural Gas customer accounts

Resources Sales

Th l El t i it d

Electricity36 TWh1

Thermal Electricity - owned

ElectricityFY2015

Gross ProfitRenewable Electricity

36 TWh

N t l GNatural Gas

Thermal Electricity - purchased$1,289m

• Generation portfolio is well positioned to benefit from renewables to further increase the competitiveness of its cost

Natural Gas147 PJ 1

FY2015 Gross Profit

$521mNatural Gas – owned & purchased

26

• Generation portfolio is well positioned to benefit from renewables to further increase the competitiveness of its cost of electricity

• A strong gas position drives margin growth

(1) In FY2015

We are actively promoting the benefits of solar

27

Our Integrated Gas business

Our Exploration & Production business has 1,093 PJe of 2P reserves2 across most

major basins

37.5% interest in Australia’s largest CSG to LNG project with 16,174 PJe of 3P reserves1

and 8.6 mtpa of LNG contracts with China and Japan

(1) As at 30 June 2015. Includes 6,059 PJe of 1P and 13,778 of 2P. (2) As at 30 June 2015. Includes 491 of 1P.

28

Australia Pacific LNG Upstream is 99% complete*

*As at end September 201529

Australia Pacific LNG Downstream is 94% complete*

*As at end September 201530

APLNG’s reserves position is more than sufficient to support domestic and LNG contracts

25,000PJ

800PJ/a

Potential sales upside ( )

APLNG’s Production Capacity100% APLNG Reserves and Resources1,3

PossibleC1C2

C3

15,000

20,000As technologies improve, low permeability finding costs expected to reduce 400

600 Domestic contracted sales (~145 PJe)

(~100 PJe)

Proved Proved

Probable Probable

5,000

10,000Tail Gas - post 20 yearsTrain 2 - 20 yearsTrain 1 - 20 yearsQCLNG GSADomestic Gas

2

0

200LNG contracted sales of 8.6 mtpa (~510 PJe)

0Reserves Resources Uses

Origin Contract 0Upstream

Processing Capacity

Uses

P d ti d i li it b d t t d l id t iti

4

31

Production and pipeline capacity beyond contracted sales provides opportunities (1) Refer to the Important Notices section for more information on reserves and

resources.(2) Represents tail gas for two trains, volume will vary depending on operational strategy

(3) Refer to SPE PRMS 2007 for classification and categorization guidelines for reserves and contingent resource estimates. Drilling results and evaluation methodology have resulted in reduction to the 3C contingent resource estimates reported in June 2012.

(4) Operated and APLNG’s interest in non-operated capacity

Conclusion

32

2015 ANNUAL GENERAL MEETING2015 ANNUAL GENERAL MEETING21 October 2015

33

FORMAL BUSINESS

34

FINANCIAL REPORT

35

2015 ANNUAL GENERAL MEETING2015 ANNUAL GENERAL MEETING21 October 2015

36

RESOLUTION 2:Election of Mr Scott PerkinsIndependent Non-executive Director

37

RESOLUTION 2: Election of Mr Scott Perkins

Scott PerkinsIndependent Non executive DirectorIndependent Non-executive Director

38

RESOLUTION 2: Election of Mr Scott Perkins

Proxy votes received:

For 752,166,242(96.12%)

A i t 17 635 006Against 17,635,006(2.25%)

Open 12 791 716Open 12,791,716(1.63%)

Abstain 3,199,717

39

RESOLUTION 3:Election of Mr Steve SargentIndependent Non-executive Director

40

RESOLUTION 3: Election of Mr Steve Sargent

Steve SargentIndependent Non executive DirectorIndependent Non-executive Director

41

RESOLUTION 3: Election of Mr Steve Sargent

Proxy votes received:

For 765,490,120(97.81%)

A i t 4 356 425Against 4,356,425(0.56%)

Open 12 738 057Open 12,738,057(1.63%)

Abstain 3,208,079

42

RESOLUTION 4:Re-election of Mr John AkehurstIndependent Non-executive Director

43

RESOLUTION 4: Re-election of Mr John Akehurst

John AkehurstIndependent Non executive DirectorIndependent Non-executive Director

44

RESOLUTION 4: Re-election of Mr John Akehurst

Proxy votes received:

For 744,217,807(95.18%)

A i t 25 011 792Against 25,011,792(3.20%)

Open 12 695 458Open 12,695,458(1.62%)

Abstain 3,867,624

45

RESOLUTION 5: WITHDRAWNRe-election of Ms Karen MosesExecutive Director, Finance & Strategy

46

RESOLUTION 6:Re-election of Helen Nugent AOIndependent Non-executive Director

47

RESOLUTION 6: Re-election of Helen Nugent AO

Helen Nugent AOIndependent Non executive DirectorIndependent Non-executive Director

48

RESOLUTION 6: Re-election of Ms Helen Nugent AO

Proxy votes received:

For 719,862,415(91.96%)

A i t 50 292 980Against 50,292,980(6.42%)

Open 12 702 907Open 12,702,907(1.62%)

Abstain 2,934,379

49

RESOLUTION 7:Remuneration Report

50

RESOLUTION 7: Remuneration Report

Proxy votes received:

For 645,644,651(86.69%)

A i t 86 630 564Against 86,630,564(11.63%)

Open 12 529 085Open 12,529,085(1.68%)

Abstain 40,967,770

51

RESOLUTIONS 8 & 9: WITHDRAWNEquity grants to Managing Director Mr Grant A King& Equity grants to Executive Director Ms Karen A Moses

52

RESOLUTION 10:Approval of potential termination benefits

53

RESOLUTION 10: Approval of potential termination benefits

Proxy votes received:

For 743,848,495(95.19%)

A i t 25 381 549Against 25,381,549(3.25%)

Open 12 470 840Open 12,470,840(1.60%)

Abstain 3,910,018

54

RESOLUTION 11:Amendment to Constitution (Non Board endorsed)

55

RESOLUTION 11: Amendment to Constitution (Non Board endorsed)

Proxy votes received:

For 50,249,804(6.46%)

A i t 712 327 937Against 712,327,937(91.60%)

Open 15 074 967Open 15,074,967(1.94%)

Abstain 8,139,973

56

2015 ANNUAL GENERAL MEETING2015 ANNUAL GENERAL MEETING21 October 2015

57