Annual General Meeting
Calgary, Alberta
June 8, 2010
Advisory

This presentation is for information purposes only and is not intended to, and should not be construed to, constitute an offer to sell or the solicitation of an offer to 
buy securities of Penn West.

Discovered Petroleum Initially‐In‐Place (DPIIP) is equivalent to Original Oil In Place (OOIP). DPIIP, also known as a "discovered resource", is defined as that quantity 
of petroleum that is estimated, as of a given date, to be contained in known accumulations prior to production. The recoverable portion of discovered petroleum 
initially‐in‐place includes production, reserves and contingent resources; the remainder is unrecoverable. A recovery project cannot be defined for this volume of 
discovered petroleum initially‐in‐place at this time. There is no certainty that it will be commercially viable to produce any portion of the resources.

Certain information regarding Penn West Energy Trust and the transactions reviewed in this presentation including management’s assessment of future plans and 
operations, may constitute forward‐looking statements under applicable securities law and necessarily involve risks, including, without limitation, risks associated 
with  oil  and  gas  exploration,  development,  exploitation,  production,  marketing  and  transportation,  loss  of  markets,  volatility  of  commodity  prices,  currency 
fluctuations, imprecision of reserve estimates, environmental risks, competition, incorrect assessment of the value of acquisitions, failure to realize the anticipated 
benefits of acquisitions and ability to access sufficient capital from internal and external sources; failure to obtain required regulatory approvals. As a consequence, 
actual  results  may  differ  materially  from  those  anticipated  in  the  forward‐looking  statements.  Readers  are  cautioned  that  the  foregoing  list  of  factors  is  not 
exhaustive. Additional information  on  these  and  other  factors  that  could  affect  Penn  West’s  operations  or  financial  results  are  included  in    reports  on  file  with 
Canadian securities regulatory authorities and may be accessed through the SEDAR website (www.sedar.com), or at Penn West’s website (www.pennwest.com).

This  presentation and its  contents  should  not be  construed,  under any circumstances, as investment,  tax  or  legal  advice.    Any  person  accepting  delivery  of  this 
presentation acknowledges the need to conduct their own thorough investigation into Penn West before considering any investment in its securities. Furthermore, 
the forward‐looking statements contained in this presentation are made as of the date of this presentation, Penn West does not undertake any obligation to update 
publicly  or  to  revise  any  of  the  included  forward‐looking  statements,  whether  as  a  result  of  new  information,  future  events  or  otherwise,  except  as  may  be 
expressly required by applicable securities law.

Where reserves or production are stated on a barrel of oil equivalent (BOE) basis, natural gas volumes have been converted to a barrel of oil equivalent (BOE) at a 
ratio of six thousand cubic feet of natural gas to one barrel of oil. This conversion ratio is based upon an energy equivalent conversion method primarily applicable 
at the burner tip and does not represent value equivalence at the wellhead. BOEs may be misleading, particularly if used in isolation.

This presentation may contain references to non‐GAAP terms. Penn West uses these measures to help evaluate their respective performance.  These measures as 
presented do not have any standardized meaning prescribed by Canadian GAAP and therefore, they may not be comparable with calculations of similar measures 
for other companies or trusts.

All references are to Canadian Dollars unless otherwise specified.


                                                                                                                                                                                      2
Setting the Course for the Future


  • Restoring financial strength

  • Empowering corporate responsibility

  • Building the right team

  • Focusing on prospects,
    innovation, and potential




                                          3
Setting the Course for the Future
Financial Strength


   • Strong Balance Sheet
       - June 2008 - $4.8 total debt - 77% short term
       - June 2010 - $2.5 total debt - 36% short term

   • Debt diversification
       - 64% of debt in long term notes

   • Credit capacity
       - 3 year, $2.25 billion syndicated credit facility
       - $1.75 billion undrawn


                                                            4
Setting the Course for the Future

           Credit Capacity


                        $1.75 billion                                                                           Total Debt
                         undrawn**
                                                                                                        Bank Debt
                                                                                                        $0.5 billion                            Private
                                                                                                                                                 Debt
        $500                                                                                                                                     $1.6
                                                                                                    Convertible                                 billion
       million
                                                                                                   Debentures***
       drawn*                                                                                       $273 million




  * Pro Forma debt at March 31, 2010 net of equity private placement and funds received from the formation of the Peace River Oil Partnership announced May 13, 2010.
  ** On April 30, 2010 Penn West Petroleum Ltd. Closed the renewal of its unsecured revolving syndicated bank facility.
  *** All debentures expire prior to December 31, 2011 and can be settled with equity.


                                                                                                                                                                        5
Setting the Course for the Future
Corporate Responsibility


   • CAPP Stewardship Platinum level since 2002

   • Strong and respectful working relationship with First
     Nations and Métis in western Canada

   • Leader in CO2 capture and storage in North America

   • Leader in Enhanced Oil Recovery in North America

   • Actively engaged in our communities


                                                             6
Setting the Course for the Future
Management Team

 • Revitalized management team over the past three years:
     Murray Nunns                              Mark Fitzgerald
       President and Chief Operating Officer     Senior Vice President, Production
     David Middleton                           Thane Jensen
       Executive Vice President, Peace River     Senior Vice President, Operations
       Project, Managing Director                Engineering
     Todd Takeyasu                             Keith Luft
       Executive Vice President & Chief          General Counsel & Senior Vice President,
       Financial Officer                         Stakeholder Relations
     Hilary Foulkes                            Bob Shepherd
       Senior Vice President, Business           Senior Vice President, Exploration &
       Development                               Development

 • Strengthened technical teams & assembled a visionary exploration group
 • Team has worked to ‘right-size’ portfolio after successive corporate
   acquisitions and are now focused on concentrated play areas

                                                                                            7
Setting the Course for the Future
Conversion


   • Capital budget of $700 to $800 million necessary to
     maintain current production levels

   • Focus funds to increase pace of development in key play
     areas – anticipate $150 to $200 million for organic growth

   • Timing for conversion at year-end 2010

   • Set dividend with objective to remain within funds flow
     for sustaining capital, growth capital and dividend

   • Fine tune model for 2011 and provide guidance for capital
     plans during Q4 2010

                                                                  8
Focus on Prospects
Calgary, Alberta
June 8, 2010
#
producer of
light & medium oil
in western Canada

                     10
million acres
Significant Light Oil Potential

                                  11
%
                                               95
                                               Vertically
                                                            %
 Proved Oil                                     Booked
  Reserves

                      Oil          Gas           BOE
Proved                341 mmbbls   938 bcf       497 mmboe
Proved and Probable   472 mmbbls   1,292 bcf     687 mmboe
                                                             12
Horizontal Technology
U.S. vs. Canadian Field Development

  Permian Basin                        Pembina Cardium
  Odessa, Texas                       Drayton Valley, Alberta
  5 acre well spacing                        80 acre well spacing




                                                                    13
Infrastructure
Advantage
                 14
Strategic Portfolio Management

     Wildboy


                           North Central
                           Carbonates

        Peace River
        Oil Sands
                                  Eastern Alberta
               Cardium
                                       Dodsland     Waskada
           Penn West
           land position




                                                        15
Prospect Inventory
                                                                                    Cumulative

                                                                                                                 1%
                                                                                     Resource                          Incremental
                                          OOIP / OGIP                               Production                         Recovery

Light Oil                                 8.5 B bbls                                        14%                   85 million bbls

Gas                                           18 Tcf                                         2%                      180 Bcf

Oil Sands                               2.75 B bbls                                          0%                  27.5 million bbls


Discovered Petroleum Initially in Place (DPIIP), is defined in the COGEH handbook as the quantity of
hydrocarbons that are estimated to be in place within a known accumulation. DPIIP is divided into
recoverable and unrecoverable portions, with the estimated future recoverable portion classified as reserves
and contingent resources. There is no certainty that it will be economically viable or technically feasible to
produce any portion of this DPIIP except for those identified as proved or probable reserves. At this time all
of the DPIIP not classified as reserves would be classified as Unrecoverable Resources.




                                                                                                                                     16
Unlocking Oil in Place
Cardium
West Central Alberta




                         17
West Central AB - Cardium
Program Summary


                                                                       880     sections (net)

                     Pembina



                                      Buck                           2,400     wells (net)
                                      Lake

     West                                        Ferrybank
   Pembina
                          Willesden                          ~25,000 boe/d     current production
                           Green

                                      Leafland
                                                                 10 billion    bbls OOIP

     Strachan

30 kms

20 miles                               Garrington
                                                                1.6 billion    bbls recovered to date


   Vertically defined
                                                                               bbls potential
                                                               2 – 5 billion
   pool boundary
   Cardium trend                                                               OOIP additions


         Penn West land                                                                             18
Cardium Land Holding – Existing + Halo

     Net
               880
Sections

    800

    700

    600
                      530
    500

    400

    300
                     204
    200                    160 150150150
                                                   100 95 92
    100                                                      81 75 66
                                                                      52 49 47 40 40 38
                                                                                        30 23 19 17 17
                                                                                                       9         8
      0
              Penn 2         3     4     5     6     7     8    9   10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
              West

           Source: Company reports, Scotia Capital estimates.


                                                                                                                      19
Light Oil Resource Plays

                                     2010
                               50    net wells
                                     net
                              880    sections
                                     well
                           2,000 +   inventory




           Cardium


          Penn West
          land position




                                                20
Light Oil Resource Plays

                                   2010
                             60    net wells
                                   net
                            125    sections
                                   well
                           1,000   inventory




           Cardium
                                   Waskada
          Penn West
          land position




                                              21
Light Oil Resource Plays

                                       2010
                                  70   net wells
                                       net
                                 280   sections
                                       well
                               1,000   inventory




           Cardium
                           Dodsland    Waskada
          Penn West
          land position




                                                  22
Light Oil Resource Plays

                                                       2010
                                                  25   net wells
                          Devonian                     net
                          Carbonates         300       sections
                                                       well
                                            200 +      inventory




           Cardium
                                       Dodsland        Waskada
          Penn West
          land position




                                                                  23
Gas Resource Plays

     Wildboy




                           Eastern Alberta




           Penn West
           land position




                                             24
Unlocking Oil in Place
Peace River
Central Alberta




                         25
Peace River Oil Partnership
Program Summary


                                                                            237,000    acres

                                                                  T86
 10 kms
                                          Nampa
 5 miles                                                                         70    stratigraphic wells
                    Cadotte                          Seal
                                 Harmon              North
                                                                  T84
                                 Valley                                          84    hz wells
         Harmon                          Harmon
         Valley                          Valley
         West                            South
                                                                  T82
                                                                         2,700 boe/d   current production


                                              Seal Main
                                                                   T80




 R22              R20              R18       R16          R14W5


       Joint Venture Partnership land
                                                                                                       26
Peace River Oil Partnership
Key Points


   Penn West contributes:
   • 106,650 acres (45% of 237,000 acres)
   • 1,215 boe/d (45% of 2,700 boe/d)

   • $56 million go forward investment (10% of PWT’s 55% interest)


   Partner contributes:
   • $312 million cash (paid to PWT directly)
   • $505 million go forward investment (90% of PWT’s 55% interest)

   • $459 million capital (45% interest)

                                                                      27
Peace River Oil Partnership
Strategic Rationale


   • Establish key technical and financial relationship

   • Increase pace of development
      (primary and thermal)

   • Operate Peace River as a stand alone project
      reflecting its uniqueness in Penn West




                                                          28
Growth   Yield


             29
Total Shareholder

Return

            Fairness
            To All Stakeholders
                                  30
Penn West Total Return vs. Indices
2009 – 2010 (18 months)



                            Penn West
 100%
                            S&P/TSX Capped Energy Trust
                            S&P/TSX Capped Energy
  80%
                            S&P/TSX 60
                            S&P/TSX Composite
  60%

  40%

  20%

   0%

 -20%

 -40%
        Jan   Feb   Mar   Apr   May   Jun    Jul   Aug    Sep   Oct   Nov   Dec   Jan   Feb   Mar   Apr   May


                                      2009                                                      2010


                                                                                                                31
Stock Exchange                    Investor Relations
Toronto:     PWT.UN               Jason Fleury, Manager, Investor Relations
New York:    PWE                  Telephone: (403) 539-6343
                                  Email: jason.fleury@pennwest.com
Legal Counsel
Burnet, Duckworth & Palmer LLP    Toll Free: 1-888-770-2633
Independent Reserves Evaluators   Email: investor_relations@pennwest.com
GLJ Petroleum Consultants Ltd.    Website: www.pennwest.com
Sproule Associates Limited        Penn West Energy
Transfer Agent                    Suite 200, 207 – 9th Avenue SW
CIBC Mellon Trust Company         Calgary, Alberta, Canada T2P 1K3
Toll Free: 1-800-387-0825         Telephone: (403) 777-2707
Email: inquiries@cibcmellon.ca    Toll Free: 1-866-693-2707
Website: www.cibcmellon.ca        Facsimile: (403) 777-2699
                                  Website: www.pennwest.com

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060810 Agm Calgary 000

  • 1. Annual General Meeting Calgary, Alberta June 8, 2010
  • 2. Advisory This presentation is for information purposes only and is not intended to, and should not be construed to, constitute an offer to sell or the solicitation of an offer to  buy securities of Penn West. Discovered Petroleum Initially‐In‐Place (DPIIP) is equivalent to Original Oil In Place (OOIP). DPIIP, also known as a "discovered resource", is defined as that quantity  of petroleum that is estimated, as of a given date, to be contained in known accumulations prior to production. The recoverable portion of discovered petroleum  initially‐in‐place includes production, reserves and contingent resources; the remainder is unrecoverable. A recovery project cannot be defined for this volume of  discovered petroleum initially‐in‐place at this time. There is no certainty that it will be commercially viable to produce any portion of the resources. Certain information regarding Penn West Energy Trust and the transactions reviewed in this presentation including management’s assessment of future plans and  operations, may constitute forward‐looking statements under applicable securities law and necessarily involve risks, including, without limitation, risks associated  with  oil  and  gas  exploration,  development,  exploitation,  production,  marketing  and  transportation,  loss  of  markets,  volatility  of  commodity  prices,  currency  fluctuations, imprecision of reserve estimates, environmental risks, competition, incorrect assessment of the value of acquisitions, failure to realize the anticipated  benefits of acquisitions and ability to access sufficient capital from internal and external sources; failure to obtain required regulatory approvals. As a consequence,  actual  results  may  differ  materially  from  those  anticipated  in  the  forward‐looking  statements.  Readers  are  cautioned  that  the  foregoing  list  of  factors  is  not  exhaustive. Additional information  on  these  and  other  factors  that  could  affect  Penn  West’s  operations  or  financial  results  are  included  in    reports  on  file  with  Canadian securities regulatory authorities and may be accessed through the SEDAR website (www.sedar.com), or at Penn West’s website (www.pennwest.com). This  presentation and its  contents  should  not be  construed,  under any circumstances, as investment,  tax  or  legal  advice.    Any  person  accepting  delivery  of  this  presentation acknowledges the need to conduct their own thorough investigation into Penn West before considering any investment in its securities. Furthermore,  the forward‐looking statements contained in this presentation are made as of the date of this presentation, Penn West does not undertake any obligation to update  publicly  or  to  revise  any  of  the  included  forward‐looking  statements,  whether  as  a  result  of  new  information,  future  events  or  otherwise,  except  as  may  be  expressly required by applicable securities law. Where reserves or production are stated on a barrel of oil equivalent (BOE) basis, natural gas volumes have been converted to a barrel of oil equivalent (BOE) at a  ratio of six thousand cubic feet of natural gas to one barrel of oil. This conversion ratio is based upon an energy equivalent conversion method primarily applicable  at the burner tip and does not represent value equivalence at the wellhead. BOEs may be misleading, particularly if used in isolation. This presentation may contain references to non‐GAAP terms. Penn West uses these measures to help evaluate their respective performance.  These measures as  presented do not have any standardized meaning prescribed by Canadian GAAP and therefore, they may not be comparable with calculations of similar measures  for other companies or trusts. All references are to Canadian Dollars unless otherwise specified. 2
  • 3. Setting the Course for the Future • Restoring financial strength • Empowering corporate responsibility • Building the right team • Focusing on prospects, innovation, and potential 3
  • 4. Setting the Course for the Future Financial Strength • Strong Balance Sheet - June 2008 - $4.8 total debt - 77% short term - June 2010 - $2.5 total debt - 36% short term • Debt diversification - 64% of debt in long term notes • Credit capacity - 3 year, $2.25 billion syndicated credit facility - $1.75 billion undrawn 4
  • 5. Setting the Course for the Future Credit Capacity $1.75 billion Total Debt undrawn** Bank Debt $0.5 billion Private Debt $500 $1.6 Convertible billion million Debentures*** drawn* $273 million * Pro Forma debt at March 31, 2010 net of equity private placement and funds received from the formation of the Peace River Oil Partnership announced May 13, 2010. ** On April 30, 2010 Penn West Petroleum Ltd. Closed the renewal of its unsecured revolving syndicated bank facility. *** All debentures expire prior to December 31, 2011 and can be settled with equity. 5
  • 6. Setting the Course for the Future Corporate Responsibility • CAPP Stewardship Platinum level since 2002 • Strong and respectful working relationship with First Nations and Métis in western Canada • Leader in CO2 capture and storage in North America • Leader in Enhanced Oil Recovery in North America • Actively engaged in our communities 6
  • 7. Setting the Course for the Future Management Team • Revitalized management team over the past three years: Murray Nunns Mark Fitzgerald President and Chief Operating Officer Senior Vice President, Production David Middleton Thane Jensen Executive Vice President, Peace River Senior Vice President, Operations Project, Managing Director Engineering Todd Takeyasu Keith Luft Executive Vice President & Chief General Counsel & Senior Vice President, Financial Officer Stakeholder Relations Hilary Foulkes Bob Shepherd Senior Vice President, Business Senior Vice President, Exploration & Development Development • Strengthened technical teams & assembled a visionary exploration group • Team has worked to ‘right-size’ portfolio after successive corporate acquisitions and are now focused on concentrated play areas 7
  • 8. Setting the Course for the Future Conversion • Capital budget of $700 to $800 million necessary to maintain current production levels • Focus funds to increase pace of development in key play areas – anticipate $150 to $200 million for organic growth • Timing for conversion at year-end 2010 • Set dividend with objective to remain within funds flow for sustaining capital, growth capital and dividend • Fine tune model for 2011 and provide guidance for capital plans during Q4 2010 8
  • 9. Focus on Prospects Calgary, Alberta June 8, 2010
  • 10. # producer of light & medium oil in western Canada 10
  • 12. % 95 Vertically % Proved Oil Booked Reserves Oil Gas BOE Proved 341 mmbbls 938 bcf 497 mmboe Proved and Probable 472 mmbbls 1,292 bcf 687 mmboe 12
  • 13. Horizontal Technology U.S. vs. Canadian Field Development Permian Basin Pembina Cardium Odessa, Texas Drayton Valley, Alberta 5 acre well spacing 80 acre well spacing 13
  • 15. Strategic Portfolio Management Wildboy North Central Carbonates Peace River Oil Sands Eastern Alberta Cardium Dodsland Waskada Penn West land position 15
  • 16. Prospect Inventory Cumulative 1% Resource Incremental OOIP / OGIP Production Recovery Light Oil 8.5 B bbls 14% 85 million bbls Gas 18 Tcf 2% 180 Bcf Oil Sands 2.75 B bbls 0% 27.5 million bbls Discovered Petroleum Initially in Place (DPIIP), is defined in the COGEH handbook as the quantity of hydrocarbons that are estimated to be in place within a known accumulation. DPIIP is divided into recoverable and unrecoverable portions, with the estimated future recoverable portion classified as reserves and contingent resources. There is no certainty that it will be economically viable or technically feasible to produce any portion of this DPIIP except for those identified as proved or probable reserves. At this time all of the DPIIP not classified as reserves would be classified as Unrecoverable Resources. 16
  • 17. Unlocking Oil in Place Cardium West Central Alberta 17
  • 18. West Central AB - Cardium Program Summary 880 sections (net) Pembina Buck 2,400 wells (net) Lake West Ferrybank Pembina Willesden ~25,000 boe/d current production Green Leafland 10 billion bbls OOIP Strachan 30 kms 20 miles Garrington 1.6 billion bbls recovered to date Vertically defined bbls potential 2 – 5 billion pool boundary Cardium trend OOIP additions Penn West land 18
  • 19. Cardium Land Holding – Existing + Halo Net 880 Sections 800 700 600 530 500 400 300 204 200 160 150150150 100 95 92 100 81 75 66 52 49 47 40 40 38 30 23 19 17 17 9 8 0 Penn 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 West Source: Company reports, Scotia Capital estimates. 19
  • 20. Light Oil Resource Plays 2010 50 net wells net 880 sections well 2,000 + inventory Cardium Penn West land position 20
  • 21. Light Oil Resource Plays 2010 60 net wells net 125 sections well 1,000 inventory Cardium Waskada Penn West land position 21
  • 22. Light Oil Resource Plays 2010 70 net wells net 280 sections well 1,000 inventory Cardium Dodsland Waskada Penn West land position 22
  • 23. Light Oil Resource Plays 2010 25 net wells Devonian net Carbonates 300 sections well 200 + inventory Cardium Dodsland Waskada Penn West land position 23
  • 24. Gas Resource Plays Wildboy Eastern Alberta Penn West land position 24
  • 25. Unlocking Oil in Place Peace River Central Alberta 25
  • 26. Peace River Oil Partnership Program Summary 237,000 acres T86 10 kms Nampa 5 miles 70 stratigraphic wells Cadotte Seal Harmon North T84 Valley 84 hz wells Harmon Harmon Valley Valley West South T82 2,700 boe/d current production Seal Main T80 R22 R20 R18 R16 R14W5 Joint Venture Partnership land 26
  • 27. Peace River Oil Partnership Key Points Penn West contributes: • 106,650 acres (45% of 237,000 acres) • 1,215 boe/d (45% of 2,700 boe/d) • $56 million go forward investment (10% of PWT’s 55% interest) Partner contributes: • $312 million cash (paid to PWT directly) • $505 million go forward investment (90% of PWT’s 55% interest) • $459 million capital (45% interest) 27
  • 28. Peace River Oil Partnership Strategic Rationale • Establish key technical and financial relationship • Increase pace of development (primary and thermal) • Operate Peace River as a stand alone project reflecting its uniqueness in Penn West 28
  • 29. Growth Yield 29
  • 30. Total Shareholder Return Fairness To All Stakeholders 30
  • 31. Penn West Total Return vs. Indices 2009 – 2010 (18 months) Penn West 100% S&P/TSX Capped Energy Trust S&P/TSX Capped Energy 80% S&P/TSX 60 S&P/TSX Composite 60% 40% 20% 0% -20% -40% Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May 2009 2010 31
  • 32. Stock Exchange Investor Relations Toronto: PWT.UN Jason Fleury, Manager, Investor Relations New York: PWE Telephone: (403) 539-6343 Email: jason.fleury@pennwest.com Legal Counsel Burnet, Duckworth & Palmer LLP Toll Free: 1-888-770-2633 Independent Reserves Evaluators Email: investor_relations@pennwest.com GLJ Petroleum Consultants Ltd. Website: www.pennwest.com Sproule Associates Limited Penn West Energy Transfer Agent Suite 200, 207 – 9th Avenue SW CIBC Mellon Trust Company Calgary, Alberta, Canada T2P 1K3 Toll Free: 1-800-387-0825 Telephone: (403) 777-2707 Email: inquiries@cibcmellon.ca Toll Free: 1-866-693-2707 Website: www.cibcmellon.ca Facsimile: (403) 777-2699 Website: www.pennwest.com