EXHIBIT 99.14
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                  ADVANTAGE ENERGY INCOME FUND - NEWS RELEASE

                                 AUGUST 11, 2005

                    ADVANTAGE ANNOUNCES 2ND QUARTER RESULTS,
                  CONFERENCE CALL & WEBCAST ON AUGUST 12, 2005

Advantage Energy Income Fund (TSX: AVN.UN) ("Advantage" or the "Fund") is
pleased to announce its unaudited operating and financial results for the second
quarter ended June 30, 2005.

A conference call will be held on Friday, August 12, 2005 at 9:00 a.m. (11:00
a.m. Eastern time) and can be accessed toll-free at 1-877-407-9205. A replay of
the call will be available from approximately 5:00 p.m. on Friday, August 12,
2005 until approximately midnight, August 19, 2005 and can be accessed by
dialing toll free 1-877-660-6853. The account number is 286, conference ID
number 162510 (both are required for playback). A live web cast of the
conference call will be accessible via the Internet on Advantage's website at
www.advantageincome.com.



FINANCIAL AND OPERATING HIGHLIGHTS
                                                       Three             Three                Six                 Six
                                                 months ended        months ended        months ended        months ended
                                                 June 30, 2005       June 30, 2004       June 30, 2005       June 30, 2004
- --------------------------------------------------------------------------------------------------------------------------
                                                                                                  
FINANCIAL ($000)
Revenue before royalties                           $   87,476          $   54,181         $  170,685          $  108,017
    per Unit (1)                                   $     1.53          $     1.38         $     3.06          $     2.79
    per boe                                        $    48.01          $    38.87         $    45.67          $    38.58
Funds from operations                              $   49,705          $   30,693         $   95,060          $   60,593
    per Unit (2)                                   $     0.87          $     0.77         $     1.69          $     1.56
    per boe                                        $    27.28          $    22.02         $    25.43          $    21.64
Net income                                         $   26,537          $    9,770         $   30,552          $   14,218
    per Unit (1)                                   $     0.46          $     0.25         $     0.55          $     0.37
Cash distributions                                 $   44,693          $   27,450         $   91,032          $   53,717
    per Unit (2)                                   $     0.78          $     0.69         $     1.62          $     1.38
Payout ratio                                              90%                 89%                96%                 89%
Working capital deficit (3)                        $   17,283          $   17,349         $   17,283          $   17,349
Bank debt                                          $  237,302          $  161,707         $  237,302          $  161,707
Convertible debentures (face value)                $  143,881          $   66,396         $  143,881          $   66,396

OPERATING
Daily Production
    Natural gas (mcf/d)                                79,492              73,283             82,902              74,466
    Crude oil and NGLs (bbls/d)                         6,772               3,106              6,832               2,974
    Total boe/d @ 6:1                                  20,021              15,320             20,649              15,385
Average prices (including hedging)
    Natural gas ($/mcf)                            $     7.30          $     6.20         $     6.87          $     6.24
    Crude oil & NGLs ($/bbl)                       $    56.24          $    45.36         $    54.63          $    43.24

SUPPLEMENTAL (000)
Trust Units outstanding at end of period               57,340              39,952             57,340              39,952
Trust Units issuable
    Convertible Debentures                              7,318               4,074              7,318               4,074
    Exchangeable Shares                                   120                   -                120                   -
    Trust Units Rights Incentive Plan                     310                 310                310                 310
Trust Units outstanding
    and issuable at end of period                      65,088              44,336             65,088              44,336
Weighted average Units                                 57,274              39,326             55,741              38,653

(1) based on weighted average number of Trust Units outstanding
(2) based on number of Trust Units outstanding at each cash distribution date
(3) working capital deficit excludes hedging liability


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 2 OF 20

CASH DISTRIBUTIONS TO UNITHOLDERS

o   The Fund declared three distributions during the quarter totalling $0.78 per
    Unit. The distributions amounted to $0.28 per Unit, payable on May 16 and
    $0.25 per Unit payable on June 15 and July 15 to Unitholders of record on
    April 29, May 31 and June 30, respectively.

o   Funds from operations for the second quarter was $49.7 million or $0.87 per
    Unit compared to $30.7 million or $0.77 per Unit for the same period of
    2004. This represents a payout ratio of 90% of funds from operations for the
    three months ended June 30, 2005.

OIL & NATURAL GAS PRODUCTION

o    Production volumes increased by 31% to 20,021 boe/d in the second quarter
     of 2005 from 15,320 boe/d in the second quarter of 2004. Second quarter
     production declined by approximately 6% from the first quarter of 2005 due
     to the shut-in of approximately 520 boe/d from plant turnarounds and delays
     in bringing new wells on-stream as a result of early spring breakup and
     extremely wet weather conditions.

NATURAL GAS

o    Natural gas production for the second quarter of 2005 was 79.5 mmcf/d, an
     8% increase over the 73.3 mmcf/d reported in the second quarter of 2004.

o    Increased production in 2005 is primarily the result of the acquisitions of
     the Anadarko assets in September 2004 and Defiant Energy in December 2004.
     Partially offsetting the increased production was lower volumes related to
     flush production declines from the company's active natural gas drilling
     program.

CRUDE OIL & NGLS

o    Crude oil and natural gas liquids production averaged 6,772 bbls/d compared
     to 3,106 bbls/d in the second quarter of 2004 representing an increase of
     118%.

o    Increased liquids production is primarily the result of the Anadarko asset
     acquisition in September 2004, the Defiant Energy acquisition in December
     2004 and successful drilling on the Fund's Nevis property. Advantage's
     crude oil production is mainly comprised of long life assets that exhibit
     low rates of decline.

DEVELOPMENT ACTIVITY

NEVIS, ALBERTA
o    During the second quarter of 2005 Advantage drilled three 100% working
     interest horizontal oil wells bringing the total for 2005 to ten wells. At
     the time of writing, all but two of the wells have been completed and
     tied-in. The remaining eight wells were brought on-stream late in the
     second quarter and during the third quarter and as such did not make a
     significant contribution to the second quarter production volumes. Also at
     Nevis, the Fund constructed a central battery and added incremental
     compression in order to handle additional production volumes from the
     Fund's successful drilling program.

STEELMAN, SASKATCHEWAN
o    During the second quarter the Fund drilled two successful 100% working
     interest horizontal oil wells at Steelman. These two wells were brought
     on-stream early in the third quarter.

OTHER AREAS
o    The Fund drilled a 100% working interest well at Gadsby, Alberta which was
     tied-in during the third quarter.

o    At Chain, Alberta a five well multi-zone shallow gas program was completed
     in the second quarter and will be tied-in during the third quarter.

o    At Sweetgrass, Alberta the Fund drilled a 50% working interest gas well and
     is following up with a second location in the third quarter to further
     define the pool boundary.

o    At Sunset, Alberta the Fund drilled two 70% working interest oil wells.
     These wells will be brought on-stream in the third quarter.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 3 OF 20


MANAGEMENT'S DISCUSSION & ANALYSIS

The following Management's Discussion and Analysis ("MD&A"), dated as of August
11, 2005, provides a detailed explanation of the financial and operating results
of Advantage Energy Income Fund ("Advantage" or the "Fund") for the three months
ended June 30, 2005 and should be read in conjunction with the financial
statements contained within this interim report and the audited financial
statements and MD&A for the year ended December 31, 2004. All per barrel of oil
equivalent ("boe") amounts are stated at 6:1 conversion rate for natural gas to
oil.

CASH DISTRIBUTIONS

Cash distributions to Unitholders for the three months ended June 30, 2005 were
$0.78 per Unit, or $44.7 million and $1.62 per Unit, or $91.0 million for the
six months ended June 30, 2005. The second quarter 2005 distributions were
comprised of $0.28 per Unit for April and $0.25 per Unit for each of May and
June. The amount distributed for the quarter represents 90% of total funds from
operations during the period, compared to 89% in the second quarter of 2004.
Since inception, the Fund has distributed $361 million or $10.33 per Unit which
represents a total payout ratio of 93%.



Cash distributions to Unitholders were paid as follows:

Period ended             Record date         Payment date        Distribution     Distribution per Unit
- -------------------------------------------------------------------------------------------------------
                                                                             
April 30, 2005           April 29, 2005      May 16, 2005         $    16,036            $   0.28
May 31, 2005             May 31, 2005        June 15, 2005        $    14,322            $   0.25
June 30, 2005            June 30, 2005       July 15, 2005        $    14,335            $   0.25
- -------------------------------------------------------------------------------------------------------
                                                                  $    44,693            $   0.78
=======================================================================================================


PRODUCTION

Natural gas production for the three months ended June 30, 2005 averaged 79.5
mmcf/d, an increase of 8% over the 73.3 mmcf/d produced during the same period
of 2004. For the six months ended June 30, 2005, natural gas production averaged
82.9 mmcf/d, an increase of 11% from the 74.5 mmcf/d produced during the first
six months of 2004. The growth in gas production over 2004 was the result of the
property acquisition from Anadarko Canada Corporation on September 15, 2004 and
the acquisition of Defiant Energy Corporation on December 21, 2004 partially
offset by flush production declines that resulted from the Fund's capital
program.

Crude oil and natural gas liquids ("NGLs") production for the three months ended
June 30, 2005 averaged 6,772 bbls/d, an increase of 118% as compared with 3,106
bbls/d produced in the second quarter of 2004. Crude oil and NGLs production for
the first six months of 2005 averaged 6,832 bbls/d, an increase of 130% as
compared to 2,974 bbls/d for the same period of 2004. The significant increase
in liquids production was primarily the result of the acquisition of the
Anadarko assets, Defiant Energy and production additions as a result of the
ongoing success of the Fund's drilling program at Nevis, Alberta.

Declines in production for the second quarter of 2005 compared to the first
quarter of 2005 were primarily the result of flush production declines on the
2004 capital expenditure program combined with delays in production additions
from the Fund's 2005 capital program due to extremely wet field conditions. In
addition, plant turnarounds and maintenance during the second quarter of 2005
caused the shut-in of approximately 520 boe/d during the quarter.

COMMODITY PRICES & MARKETING

NATURAL GAS

Natural gas prices for the three months ended June 30, 2005 averaged $7.27/mcf
($7.30/mcf including hedging), compared to $6.65/mcf ($6.20/mcf including
hedging) for the three months ended June 30, 2004. For the three months ended
June 30, 2005 AECO daily prices averaged $7.35/mcf as compared to $6.64/mcf for
the second quarter of 2004. For the six months ended June 30, 2005, natural gas
prices averaged $6.88/mcf ($6.87/mcf including hedging), compared to $6.46/mcf
($6.24/mcf including hedging) realized in the same period of 2004.

Natural gas prices continue to strengthen as a result of summer heat in North
America which has increased gas fueled air conditioning demand which has also
continued to erode North American natural gas storage levels. Advantage
continues to believe that the short and long term pricing fundamentals for
natural gas remain strong. These fundamentals include (i) the continued strength
of crude oil prices which has eliminated the economic advantage of fuel
switching away from natural gas, (ii) continued tightness in supply that has
resulted from increased demand and the decline in North American natural gas


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 4 OF 20


production levels and (iii) ongoing weather related factors such as hot summers,
cold winters and annual hurricane season in the Gulf of Mexico all of which have
an impact on the delicate supply/demand balance that exists. In the second
quarter of 2005 Advantage's production was weighted 66% to natural gas.

CRUDE OIL

Crude oil and NGLs prices averaged $56.57/bbl ($56.24/bbl including hedging) for
the three months ended June 30, 2005, a 25% increase as compared with $45.36/bbl
($45.36/bbl including hedging) for the same period of 2004. For the six months
ended June 30, 2005, crude oil and NGLs prices averaged $54.79/bbl ($54.63/bbl
including hedging) compared to $43.24/bbl ($43.24/bbl including hedging) for the
same period of 2004. Advantage's crude oil prices are based on the benchmark
pricing of West Texas Intermediate Crude ("WTI") adjusted for quality,
transportation costs and Canadian/US exchange rate. The price of WTI fluctuates
based on worldwide supply and demand fundamentals. Crude oil prices continue to
be strong with many factors affecting the continued strength including (i)
supply management and supply restrictions by the OPEC cartel, (ii) ongoing civil
unrest in the Middle East, Venezuela and Nigeria, (iii) increased world wide
demand, particularly in China and India and (iv) North American refinery
capacity constraints. The price of WTI averaged $US53.13/bbl during the second
quarter of 2005 compared to $US38.31/bbl in 2004. Partially offsetting the
strength of WTI oil prices has been the strength of the Canadian dollar relative
to the U.S. dollar.

PRICE RISK MANAGEMENT

Advantage's natural gas hedging program resulted in gains of $0.2 million during
the second quarter of 2005 or $0.03/mcf compared to hedging losses of $3.0
million or $0.45/mcf for the same period of 2004. For 2005 the Fund has
currently hedged 56.9 mmcf/d for the period April to October at a variety of
prices through both fixed price contracts and price collars.

Advantage's crude oil hedging program resulted in losses of $0.2 million or
$0.33/bbl during the second quarter of 2005. Advantage did not have any crude
oil hedges in place for the same period of 2004. The Fund has currently hedged
3,500 bbls/d for the period April to October at a variety of prices through both
fixed price contracts and price collars.



As at June 30, 2005 the Fund has the following hedges in place:

     DESCRIPTION OF HEDGE                TERM                    VOLUME                  AVERAGE PRICE
- -------------------------------------------------------------------------------------------------------
                                                                       
     NATURAL GAS - AECO
         Fixed price             April to October 2005        34,123 mcf/d               Cdn$7.45/mcf
         Collar                  April to October 2005        11,374 mcf/d        Floor  Cdn$6.86/mcf
                                                                                Ceiling  Cdn$8.18/mcf
         Collar                  April to October 2005        11,374 mcf/d        Floor  Cdn$7.02/mcf
                                                                                Ceiling  Cdn$8.02/mcf
     CRUDE OIL - WTI
         Fixed price            April to September 2005       1,750 bbls/d               US$52.11/bbl
         Collar                  April to October 2005        1,750 bbls/d        Floor  US$47.00/bbl
                                                                                Ceiling  US$56.75/bbl


At June 30, 2005, the mark-to-market valuation of Advantage's outstanding hedges
was a loss of $1.3 million. This amount has been included in the income
statement as an unrealized hedging loss with a corresponding hedging liability
recorded on the balance sheet. The Fund continues to monitor the commodity
markets with a view to provide cash flow stability.

ROYALTIES

Total royalties amounted to $16.3 million for the three months ended June 30,
2005 or 18.6% of pre-hedged revenue compared with $10.6 million or 18.5% of
pre-hedged revenue for same period of 2004. For the six months ended June 30,
2005, total royalties were $32.7 million or 19.1% of pre-hedged revenue compared
with $21.1 million or 19.0% for the similar period of 2004. Advantage expects
royalty rates will average approximately 20% based on the current portfolio of
properties. The royalty rate for the three months ended June 30, 2005 was below
the 20% anticipated royalty rate due to royalty adjustments and refunds received
during the second quarter related to prior periods.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 5 OF 20


OPERATING COSTS

Operating costs for the second quarter of 2005 amounted to $13.3 million or
$7.31/boe compared with $8.2 million or $5.90/boe for the three months ended
June 30, 2004. Operating costs for the six months ended June 30, 2005 were $26.4
million or $7.05/boe as compared to $16.5 million or $5.91/boe for the same
period of 2004. The increase in operating cost amounts reflects the significant
increase in overall production. Higher per boe operating costs are partially due
to the higher costs associated with properties acquired from Anadarko and
Defiant during the second half of 2004. In addition, operating costs have
steadily increased over the past several years due to higher power costs and
higher field costs associated with the shortage of supplies and services that
has resulted from the high level of industry activity.

GENERAL AND ADMINISTRATIVE AND MANAGEMENT FEES

General and administrative ("G&A") expense for the three months ended June 30,
2005 amounted to $1.6 million or $0.86/boe compared with $0.8 million or
$0.56/boe for the three months ended June 30, 2004. For the six months ended
June 30, 2005, G&A expense was $3.0 million or $0.81/boe, compared to $1.6
million or $0.58/boe for the same period of 2004. G&A expense increased due to
higher staff levels that resulted from the growth of the Fund from production
additions and acquisitions.

Management fees for the three months ended June 30, 2005 amounted to $0.9
million compared to $0.5 million for the second quarter of 2004. On a boe basis,
management fees were $0.48/boe compared to $0.38/boe in 2004. For the six months
ended June 30, 2005 management fees were $1.7 million or $0.45/boe compared to
$1.1 million or $0.38/boe for the similar period of 2004. Management fees are
calculated based on 1.5% of operating cash flow, which is defined as revenues
less royalties and operating expenses. The 26% increase in management fees in
the second quarter on a boe basis is primarily due to increased operating
netbacks resulting from higher commodity prices.

The Fund Manager is entitled to earn a performance fee to the extent that the
total annual return of the Fund exceeds 8%. The total annual return is
calculated at the end of each year by dividing the year over year change in Unit
price plus cash distributions by the opening Unit price. One tenth (10%) of the
amount of the total annual return in excess of 8% is multiplied by the market
capitalization (defined as the opening Unit price times the weighted average
number of Trust Units outstanding during the year) to determine the performance
fee. For the three months and six months ending June 30, 2005 no performance fee
incentive has been accrued given that the total annualized return of the Fund is
currently less than the 8% threshold. The Manager does not receive any form of
compensation in respect of acquisition or divestiture fees nor is there any form
of stock option plan for the Manager or the employees of Advantage.

INTEREST

Interest expense on bank debt for the second quarter of 2005 amounted to $2.3
million compared to the $1.4 million for the same period of 2004. For the six
months ended June 30, 2005 interest expense was $4.9 million as compared to $2.7
million for the six months ended June 30, 2004. Average debt levels were higher
during the three months ended June 30, 2005 but were offset by lower interest
rates. The Fund's interest rates are primarily based on short term Bankers
Acceptance rates plus a stamping fee.

INTEREST AND ACCRETION ON CONVERTIBLE DEBENTURES

Interest and accretion on convertible debentures was $3.4 million for the three
months ended June 30, 2005 as compared to $2.0 million for the second quarter of
2004. For the first six months of 2005 interest and accretion expense was $6.8
million as compared to $4.5 million for the six months ended June 30, 2004.
Interest and accretion expense increased primarily due to the issuance of $75
million 7.75% and $50 million 7.5% convertible debentures in September 2004 to
partially finance the Anadarko asset acquisition. The increased interest from
the additional debentures is partially offset by a general reduction of the
other outstanding debenture balances resulting from holders exercising the
conversion option. Accretion expense for the quarter ended June 30, 2005 was
$0.5 million compared to $0.3 million for the three months ended June 30, 2004.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 6 OF 20




CASH NETBACKS (PER BOE)

                                                     Three months ended            Six months ended
                                                           June 30                      June 30
                                                      2005        2004            2005         2004
     -------------------------------------------------------------------------------------------------
                                                                                 
     Revenue                                       $  47.99     $  41.02        $  45.75     $  39.65
     Hedging                                           0.02        (2.15)          (0.08)       (1.07)
     Royalties                                        (8.94)       (7.59)          (8.74)       (7.55)
     Operating costs                                  (7.31)       (5.90)          (7.05)       (5.91)
     -------------------------------------------------------------------------------------------------

     Operating                                     $  31.76     $  25.38        $  29.88     $  25.12
     General and administrative                       (0.86)       (0.56)          (0.81)       (0.58)
     Management fees                                  (0.48)       (0.38)          (0.45)       (0.38)
     Interest expense                                 (1.28)       (1.00)          (1.32)       (0.96)
     Interest on convertible debentures               (1.55)       (1.19)          (1.52)       (1.34)
     Taxes                                            (0.31)       (0.23)          (0.35)       (0.22)
     -------------------------------------------------------------------------------------------------

     FUNDS FROM OPERATIONS                         $  27.28     $  22.02        $  25.43     $  21.64
     =================================================================================================


DEPLETION, DEPRECIATION AND ACCRETION

Depletion and depreciation of property and equipment is provided on the unit of
production method based on total proved reserves. The depletion, depreciation
and accretion ("DD&A") provision for three months ended June 30, 2005 increased
to $33.5 million from $20.7 million for the same period of 2004. The increased
provision is the result of higher production volumes and a higher per boe rate.
The DD&A rate for the second quarter of 2005 was $18.39/boe compared with
$14.58/boe in 2004. The DD&A provision for the six months ended June 30, 2005
was $68.3 million or $18.27/boe compared to $41.0 million or $14.64/boe for the
same period of 2004.

TAXES

Current taxes paid or payable for the three months ended June 30, 2005 primarily
represents capital tax and amounted to $0.6 million, compared to $0.3 million
expensed in the three months ended June 30, 2004. Current taxes for the six
months ended June 30, 2005 was $1.3 million, an increase from $0.6 million for
the same period of 2004. Capital taxes are based on debt and equity levels of
the Fund at the end of the year and have increased due to Advantage's
significant growth. As a result of new legislation, capital taxes are to be
gradually eliminated over the next several years.

Future income taxes arise from differences between the accounting and tax bases
of the operating company's assets and liabilities. For the three months ended
June 30, 2005, the Fund recognized an income tax recovery of $1.0 million
compared to a $1.8 million recovery for the second quarter of 2004. The future
income tax recovery for the six months ended June 30, 2005 was $6.1 million
compared to $9.5 million for the similar period ended June 30, 2004.

In the Fund's structure, payments are made between the operating company and the
Fund transferring income tax obligations to the Unitholders. Therefore, it is
expected, based on current legislation that no cash income taxes are to be paid
by the operating company or the Fund in the future, and as such, the future
income tax liability recorded on the balance sheet will be recovered through
earnings over time. As at June 30, 2005 the operating company had a future
income tax liability balance of $104.3 million. Canadian generally accepted
accounting principles require that a future income tax liability be recorded
when the book value of assets exceeds the balance of tax pools.

NON-CONTROLLING INTEREST

Non-controlling interest expense for the three month period ended March 31, 2005
was $0.1 million. Non-controlling interest expense represents the net income
attributable to Exchangeable Share ownership interests. The non-controlling
interest was created when Advantage Oil & Gas Ltd. ("AOG") issued Exchangeable
Shares as partial consideration for the acquisition of Defiant that occurred at
the end of 2004. The Exchangeable Shares and Trust Units are considered
economically equivalent since all shares must be exchanged for either Trust
Units or cash over time, based on the current market price of the Trust


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 7 OF 20



Units. Since the Exchangeable Shares are required to be exchanged, there is no
permanent non-controlling interest. At June 30, 2005, only 110,416 Exchangeable
Shares were outstanding and non-controlling interest expense will continue to be
minor.




PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 8 OF 20


CONTRACTUAL OBLIGATIONS AND COMMITMENTS

The Fund has contractual obligations in the normal course of operations
including purchases of assets and services, operating agreements, transportation
commitments and sales contracts. These obligations are of a recurring and
consistent nature and impact cash flow in an ongoing manner. The following is a
summary of the Fund's remaining contractual obligations and commitments:



                                                                 PAYMENTS DUE BY PERIOD
     ($ millions)                      TOTAL             2005             2006              2007             2008
     --------------------------------------------------------------------------------------------------------------
                                                                                             
     Building lease                    $   3.9          $  0.7           $   1.4           $  1.3           $   0.5
     Capital lease                     $   2.0          $  0.2           $   0.4           $  1.4               -
     Pipeline/transportation           $   3.6          $  1.2           $   1.8           $  0.5           $   0.1
     --------------------------------------------------------------------------------------------------------------
     TOTAL CONTRACTUAL OBLIGATIONS     $   9.5          $  2.1           $   3.6           $  3.2           $   0.6
     ==============================================================================================================



LIQUIDITY AND CAPITAL RESOURCES

On February 9, 2005 Advantage issued 5,250,000 Advantage Trust Units at $21.65
per Unit for gross proceeds of $113.7 million, $107.6 million net of related
issuance costs. The net proceeds of the offering were used to pay down debt
incurred in the acquisition of Defiant Energy Corporation, for 2005 capital
expenditures and for general corporate purposes. As at June 30, 2005 the Fund
had 57.3 million Trust Units outstanding.

As at August 11, 2005, Advantage has 57.3 million Trust Units and 110,296
Exchangeable Shares issued and outstanding. The exchange ratio of the
Exchangeable Shares adjusts each month on the distribution payment date and the
number of Trust Units ultimately issuable will increase over time. The
Exchangeable Shares are currently exchangeable for the issuance of 121,184 Trust
Units. The Fund also had $143.8 million convertible debentures outstanding at
August 11, 2005 that can be converted to 7.3 million Trust Units.

At June 30, 2005 Advantage had bank debt outstanding of $237.3 million.
Advantage has an agreement with a syndicate of four Canadian chartered banks and
finalized the renewal of the facility in May 2005. The agreement provides for a
$335 million facility consisting of a $325 million extendible revolving loan
facility and a $10 million operating loan facility, both of which are due for
renewal in May 2006. The credit facilities are secured by a $500 million
floating charge demand debenture, a general security agreement and a
subordination agreement from the Fund covering all assets and cash flows. Given
amendments made in 2005 to the repayment terms, the debt is classified as a
long-term liability on the consolidated balance sheet. At June 30, 2005
Advantage also had a working capital deficiency of $17.3 million.

In December 2004, Advantage assumed two capital lease obligations as a result of
the Defiant acquisition. These two capital leases were repaid in May 2005 for
$6.8 million.

For the three month period ended June 30, 2005, the Fund spent $21.8 million on
capital expenditures. Approximately $17.2 million was expended on drilling and
completion operations where the Fund drilled a total of 7.4 net (12 gross) wells
and recompleted an additional eight wells primarily at Open Lake and in
southeast Saskatchewan. Three 100% working interest horizontal wells were
drilled and completed at Nevis, Alberta and two 100% working interest horizontal
wells were drilled at Steelman, Saskatchewan. Approximately $4.3 million was
expended during the quarter on facilities and equipping primarily related to the
construction of a central oil battery and additional compression facilities at
Nevis and to install two three stage compressors at Wainwright and Manville,
Alberta. Capital expenditures for the six months ended June 30, 2005 amounted to
$54.5 million.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                        PAGE 9 OF 20


     SOURCES AND USES OF FUNDS ($ THOUSANDS)
                                                                SIX MONTHS ENDED
                                                                  JUNE 30, 2005
     ---------------------------------------------------------------------------
     SOURCES OF FUNDS
        Funds from operations                                       $   95,060
        Units issued, net of costs                                     107,616
        Property dispositions                                            2,581
     ---------------------------------------------------------------------------
                                                                    $  205,257
     ===========================================================================

     USES OF FUNDS
        Capital expenditures                                        $   54,537
        Asset retirement expenditures                                      737
        Purchase adjustment of Defiant acquisition                         352
        Property acquisitions                                              213
        Distributions paid to Unitholders                               89,116
        Decrease in bank debt                                           29,752
        Reduction of capital lease obligations                           7,515
        Increase in working capital and other                           23,035
     ---------------------------------------------------------------------------
                                                                    $  205,257
     ===========================================================================



QUARTERLY PERFORMANCE

     ($ thousands, except per Unit amounts)
                                                   2005                            2004                         2003
                                               Q2        Q1        Q4        Q3        Q2        Q1         Q4        Q3
     -------------------------------------------------------------------------------------------------------------------
                                                                                         
     Net revenues                        $ 81,144  $ 55,778  $ 68,521  $ 48,255  $ 44,436  $ 32,227   $ 36,074   $34,483
     Net income (loss) (1)               $ 26,537  $  4,015  $  4,855  $  4,965  $  9,770  $  4,448   $ (3,527)  $ 8,386
     Net income (loss) per Unit, basic   $   0.46  $   0.07  $   0.11  $   0.12  $   0.25  $   0.12   $  (0.11)  $  0.27
     Net income (loss) per Unit, diluted $   0.46  $   0.07  $   0.11  $   0.12  $   0.25  $   0.12   $  (0.11)  $  0.27

     (1) Net income (loss) has been restated to reflect changes in accounting
         policies as disclosed in the Notes to the Consolidated Financial
         Statements.

The table above highlights the Fund's performance for the second quarter of 2005
and also for the preceding seven quarters. Net revenues are primarily impacted
by commodity prices, production volumes and royalties. Significant increases in
net revenues occurred in the second quarter of 2004 through the second quarter
of 2005 due to considerably higher crude oil prices and the acquisition of the
Anadarko assets in September 2004 and Defiant in December 2004.

FINANCIAL REPORTING UPDATE

During 2005 there were several changes to financial reporting requirements. The
changes impacting Advantage are noted below. FINANCIAL INSTRUMENTS -
PRESENTATION AND DISCLOSURE Effective January 1, 2005, the Fund retroactively
adopted the revised accounting standard Section 3860 "Financial Instruments -
Presentation and Disclosure" as issued by the Canadian Institute of Chartered
Accountants. The revised standard applies to financial instruments that may be
settled at the issuer's option in cash or its own equity instruments and impacts
the Fund's prior accounting for convertible debentures and the performance
incentive fee. The Fund previously classified the issuance of convertible
debentures and the performance fee obligation as components of equity on the
basis that the obligations could be settled with the issuance of Trust Units.
Interest expense and issuance costs related to the debentures were charged to
accumulated income as a component of equity. Based on the revised standard, a
financial instrument is presented based on the substance of the contractual
arrangement regardless of the means of settlement. This results in the
reclassification of convertible debentures to long-term liabilities and the
performance fee to current liabilities. Additionally, a financial instrument
with an embedded conversion feature must be segregated between liabilities and
equity


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 10 OF 20


based on the relative fair market value of the liability and equity
portions. Therefore, the debenture liabilities are presented at less than their
eventual maturity values. The liability and equity components are further
reduced for issuance costs initially incurred. The discount of the liability
component as compared to maturity value is accreted by the effective interest
method over the debenture term. As debentures are converted to Trust Units, an
appropriate portion of the liability and equity components are transferred to
Unitholders' capital. Interest and accretion expense on the convertible
debentures are shown on the Consolidated Statement of Income.

EXCHANGEABLE SHARES

In March 2005, the CICA's Emerging Issues Committee ("EIC") amended EIC-151
"Exchangeable Securities Issued by Subsidiaries of Income Trusts" which is
effective for periods ending on June 30, 2005. The EIC specifies the required
criteria to present exchangeable shares as a component of Unitholders' equity.
Exchangeable shares that do not meet both criteria are classified as either debt
or non-controlling interest depending on the nature of the instrument. Prior to
the amendment, Exchangeable Shares of Advantage Oil & Gas Ltd. ("AOG"), a
subsidiary of Advantage, were shown as a component of Unitholders' equity.
However, the Exchangeable Shares do not meet the requirements of the amended
standard given that the shares are transferable, although not publicly traded.
Therefore, Exchangeable Shares are now classified as non-controlling interest,
outside of Unitholders' equity. The Exchangeable Shares and Trust Units are
considered economically equivalent since all shares must be exchanged for either
Trust Units or cash, based on the current market price of the Trust Units. Since
the Exchangeable Shares are required to be exchanged, there is no permanent
non-controlling interest. As a consequence of presenting Exchangeable Shares as
non-controlling interest, a corresponding expense is recorded that reflects the
earnings attributable to the non-controlling interest. When Exchangeable Shares
are converted to Trust Units, the carrying value of non-controlling interest on
the balance sheet is reclassified to Unitholders' capital. The Fund
retroactively implemented the revised standard but there was no impact on
periods prior to 2005 given that the Exchangeable Shares were issued at the end
of 2004.

NON-GAAP MEASURES

Funds from operations and per Unit and payout ratio are not recognized measures
under the Canadian generally accepted accounting principles ("GAAP"). Management
believes that funds from operations and payout ratio are useful supplemental
measures to analyse operating performance and provide an indication of the
results generated by the Fund's principal business activities prior to the
consideration of how those activities are financed or how the results are taxed.
Investors should be cautioned, however, that these measures should not be
construed as an alternative to net income determined in accordance with GAAP as
an indication of Advantage's performance. Advantage's method of calculating
these measures may differ from other companies, and accordingly, they may not be
comparable to measures used by other companies.

ADDITIONAL INFORMATION

Additional information relating to Advantage, including the annual information
form, can be found on SEDAR at www.sedar.com


August 11, 2005





PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 11 OF 20


CONSOLIDATED FINANCIAL STATEMENTS



CONSOLIDATED BALANCE SHEETS

(thousands of dollars)                                        June 30, 2005              December 31, 2004
- -----------------------------------------------------------------------------------------------------------
                                                               (unaudited)              (restated - note 1)
                                                                                     
ASSETS

Current assets
     Accounts receivable                                      $      49,928                $      48,961

Fixed assets
     Property and equipment                                       1,243,417                    1,190,552
     Accumulated depletion and depreciation                        (321,190)                    (253,506)
- -----------------------------------------------------------------------------------------------------------

                                                                    922,227                      937,046
Goodwill                                                             45,726                       47,244
- -----------------------------------------------------------------------------------------------------------

                                                              $   1,017,881                $   1,033,251
===========================================================================================================

LIABILITIES

Current liabilities
     Accounts payable and accrued liabilities                 $      52,527                $      91,165
     Cash distributions payable to Unitholders                       14,335                       12,419
     Current portion of capital lease obligations (note 2)              349                        1,785
     Hedging liability (note 7)                                       1,323                          214
     Bank indebtedness (note 3)                                           -                      267,054
- -----------------------------------------------------------------------------------------------------------

                                                                     68,534                      372,637

Capital lease obligations (note 2)                                    1,527                        7,606
Bank indebtedness (note 3)                                          237,302                            -
Convertible debentures (notes 1 and 4)                              133,255                      136,433
Asset retirement obligations                                         18,043                       17,503
Future income taxes                                                 104,295                      112,266
- -----------------------------------------------------------------------------------------------------------

                                                                    562,956                      646,445
===========================================================================================================

NON-CONTROLLING INTEREST

Exchangeable shares (note 5)                                          2,401                       30,842
- -----------------------------------------------------------------------------------------------------------

UNITHOLDERS' EQUITY

Unitholders' capital (note 6i)                                      672,792                      515,544
Convertible debentures equity component (notes 1 and 4)               6,556                        6,764
Contributed surplus                                                   1,036                        1,036
Accumulated income                                                  133,189                      102,637
Accumulated cash distributions                                     (361,049)                    (270,017)
- -----------------------------------------------------------------------------------------------------------


                                                                    452,524                      355,964
- -----------------------------------------------------------------------------------------------------------

                                                               $  1,017,881                $   1,033,251
===========================================================================================================


see accompanying Notes to Consolidated Financial Statements


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 12 OF 20




CONSOLIDATED STATEMENTS OF INCOME AND ACCUMULATED INCOME

                                                        Three              Three                Six                 Six
(thousands of dollars, except for                    months ended       months ended        months ended        months ended
per Unit amounts) (unaudited)                       June 30, 2005       June 30, 2004       June 30, 2005      June 30, 2004
- -------------------------------------------------------------------------------------------------------------------------------
                                                                    (restated - note 1)                     (restated - note 1)
                                                                                                  
REVENUE

   Petroleum and natural gas                          $  87,476         $    54,181         $   170,685       $  108,017
   Unrealized hedging gain (loss) (note 7)                9,957                 833              (1,109)         (10,224)
   Royalties, net of Alberta Royalty Credit             (16,289)            (10,578)            (32,654)         (21,130)
- -------------------------------------------------------------------------------------------------------------------------------

                                                         81,144              44,436             136,922           76,663
===============================================================================================================================

EXPENSES

   Operating                                             13,327               8,218              26,357           16,538
   General and administrative                             1,567                 788               3,030            1,634
   Unit-based compensation                                    -               1,036                   -            1,036
   Management fee                                           868                 530               1,675            1,055
   Performance incentive (note 8)                             -               1,500                   -            2,900
   Interest                                               2,332               1,399               4,941            2,677
   Interest and accretion on convertible debentures       3,364               1,992               6,765            4,516
   Depletion, depreciation and accretion                 33,499              20,655              68,265           41,001
- -------------------------------------------------------------------------------------------------------------------------------

                                                         54,957              36,118             111,033           71,357
===============================================================================================================================

Income before taxes and non-controlling interest         26,187               8,318              25,889            5,306
Future income tax recovery                               (1,000)             (1,767)             (6,101)          (9,542)
Income and capital taxes                                    573                 315               1,303              630
- -------------------------------------------------------------------------------------------------------------------------------

                                                           (427)             (1,452)             (4,798)          (8,912)
===============================================================================================================================

Net income before non-controlling interest               26,614               9,770              30,687           14,218
Non-controlling interest (note 5)                            77                   -                 135                -
- -------------------------------------------------------------------------------------------------------------------------------

NET INCOME                                               26,537               9,770              30,552           14,218
Accumulated income, beginning of period
   as previously reported                               106,710              77,957              93,451           73,137
Effect of change in accounting policies (note 1)            (58)              5,090               9,186            5,462
- -------------------------------------------------------------------------------------------------------------------------------


Accumulated income, beginning of period as restated     106,652              83,047             102,637           78,599
- -------------------------------------------------------------------------------------------------------------------------------

Accumulated income, end of period                     $ 133,189         $    92,817         $   133,189       $   92,817
===============================================================================================================================

Net income per Trust Unit
   Basic and diluted                                  $    0.46         $      0.25         $      0.55       $     0.37


see accompanying Notes to Consolidated Financial Statements


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 13 OF 20



CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                        Three               Three               Six                Six
                                                    months ended        months ended       months ended       months ended
(thousands of dollars) (unaudited)                  June 30, 2005       June 30, 2004      June 30, 2005      June 30, 2004
- ------------------------------------------------------------------------------------------------------------------------------
                                                                     (restated - note 1)                   (restated - note 1)
                                                                                                  
OPERATING ACTIVITIES

Net income                                            $  26,537         $     9,770         $    30,552       $   14,218
Add (deduct) items not requiring cash:
   Unit-based compensation                                    -               1,036                   -            1,036
   Non-cash performance incentive (note 8)                    -               1,500                   -            2,900
   Future income taxes                                   (1,000)             (1,767)             (6,101)          (9,542)
   Unrealized hedging (note 7)                           (9,957)               (833)              1,109           10,224
   Accretion on convertible debentures                      549                 332               1,100              756
   Depletion, depreciation and accretion                 33,499              20,655              68,265           41,001
   Non-controlling interest                                  77                   -                 135                -
- ------------------------------------------------------------------------------------------------------------------------------

Funds from operations                                    49,705              30,693              95,060           60,593
Expenditures on asset retirement                           (330)                (86)               (737)            (148)
Changes in non-cash working capital                     (17,006)             (4,959)            (23,346)         (13,291)
- ------------------------------------------------------------------------------------------------------------------------------

Cash provided by operating activities                    32,369              25,648              70,977           47,154
==============================================================================================================================

FINANCING ACTIVITIES

Units issued, net of costs (note 6i)                        (85)                112             107,616              228
Increase (decrease) in bank debt                         40,940              25,552             (29,752)          58,739
Reduction of capital lease obligations                   (7,071)                (80)             (7,515)            (158)
Cash distributions to Unitholders                       (46,382)            (27,040)            (89,116)         (52,974)
- ------------------------------------------------------------------------------------------------------------------------------

Cash provided by (used in) financing activities         (12,598)             (1,456)            (18,767)           5,835
==============================================================================================================================

INVESTING ACTIVITIES

Expenditures on property and equipment                  (21,822)            (23,023)            (54,537)         (53,225)
Property acquisitions                                      (185)                  -                (213)               -
Property dispositions                                     2,547                   -               2,581              791
Purchase adjustment of Defiant Energy acquisition           132                   -                (352)               -
Changes in non-cash working capital                        (443)             (1,169)                311             (555)
- ------------------------------------------------------------------------------------------------------------------------------

Cash used in investing activities                       (19,771)            (24,192)            (52,210)         (52,989)
==============================================================================================================================

Net change in cash                                            -                   -                   -                -

Cash, beginning of period                                     -                   -                   -                -
- ------------------------------------------------------------------------------------------------------------------------------

Cash, end of period                                   $       -         $         -         $         -       $        -
==============================================================================================================================

SUPPLEMENTARY CASH FLOW INFORMATION

Taxes paid                                            $     864         $       315         $     1,461       $      631
Interest paid                                         $   5,472         $     4,166         $    11,557       $    7,081


see accompanying Notes to Consolidated Financial Statements


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 14 OF 20


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

June 30, 2005 (unaudited)

All tabular amounts in thousands, except for Units and per Unit amounts

The interim consolidated financial statements of Advantage Energy Income Fund
("Advantage" or the "Fund") have been prepared by management in accordance with
Canadian generally accepted accounting principles using the same accounting
policies as those set out in note 2 to the consolidated financial statements for
the year ended December 31, 2004 except as described below. The interim
consolidated financial statements should be read in conjunction with the audited
consolidated financial statements of Advantage for the year ended December 31,
2004 as set out in Advantage's Annual Report.

1.   CHANGE IN ACCOUNTING POLICIES

     (a) FINANCIAL INSTRUMENTS - PRESENTATION AND DISCLOSURE
     Effective January 1, 2005, the Fund retroactively adopted the revised
     accounting standard Section 3860 "Financial Instruments - Presentation and
     Disclosure" as issued by the Canadian Institute of Chartered Accountants
     ("CICA"). The revised standard applies to financial instruments that may be
     settled at the issuer's option in cash or its own equity instruments and
     impacts the Fund's prior accounting for convertible debentures and the
     performance incentive fee. The Fund previously classified the issuance of
     convertible debentures and the performance fee obligation as components of
     equity on the basis that the obligations could be settled with the issuance
     of Trust Units. Interest expense and issuance costs related to the
     debentures were charged to accumulated income as a component of equity.
     Based on the revised standard, a financial instrument is presented based on
     the substance of the contractual arrangement regardless of the means of
     settlement. This results in the reclassification of convertible debentures
     to long-term liabilities and the performance fee to current liabilities.
     Additionally, a financial instrument with an embedded conversion feature
     must be segregated between liabilities and equity based on the relative
     fair market value of the liability and equity portions. Therefore, the
     debenture liabilities are presented at less than their eventual maturity
     values. The liability and equity components are further reduced for
     issuance costs initially incurred. The discount of the liability component
     as compared to maturity value is accreted by the effective interest method
     over the debenture term. As debentures are converted to Trust Units, an
     appropriate portion of the liability and equity components are transferred
     to Unitholders' capital. Interest and accretion expense on the convertible
     debentures are shown on the Consolidated Statement of Income.

     The effect of this change in accounting policy has been recorded
     retroactively with restatement of prior periods. The effect of the adoption
     is presented below as increases (decreases):



     BALANCE SHEETS                                         DECEMBER 31, 2004     DECEMBER 31, 2003
     ----------------------------------------------------------------------------------------------
                                                                                
     Current liabilities

       Accounts payable and accrued liabilities               $    16,570             $   19,592

     Long-term liabilities
       Convertible debentures                                 $   136,433             $   91,372
     Unitholders' equity
       Convertible debentures                                 $  (148,450)            $  (99,984)
       Convertible debentures equity component                $     6,764             $    4,726
       Unitholders' capital                                   $   (20,503)            $  (21,168)
       Accumulated income                                     $     9,186             $    5,462




                                                         THREE MONTHS            SIX MONTHS
                                                             ENDED                  ENDED                YEAR ENDED
     STATEMENTS OF INCOME                                JUNE 30, 2004          JUNE 30, 2004         DECEMBER 31, 2004
     ------------------------------------------------------------------------------------------------------------------
                                                                                                 
     Interest and accretion on convertible debentures     $    1,992              $  4,516                $   10,425
     ------------------------------------------------------------------------------------------------------------------



PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 15 OF 20




                                                                                                 
     Net income                                           $   (1,992)             $ (4,516)               $  (10,425)
     ------------------------------------------------------------------------------------------------------------------
     Net income per Trust Unit (basic and diluted)        $    (0.01)             $  (0.02)               $   (0.04)








PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 16 OF 20


     (b) EXCHANGEABLE SHARES

     In March 2005, the CICA's Emerging Issues Committee amended EIC-151
     "Exchangeable Securities Issued by Subsidiaries of Income Trusts". The EIC
     specifies the required criteria to present exchangeable shares as a
     component of Unitholders' equity. Exchangeable shares that do not meet both
     criteria are classified as either debt or non-controlling interest
     depending on the nature of the instrument. Prior to the amendment,
     Exchangeable Shares of Advantage Oil & Gas Ltd. ("AOG"), a subsidiary of
     Advantage, were shown as a component of Unitholders' equity. However, the
     Exchangeable Shares do not meet the requirements of the amended standard
     given that the shares are transferable, although not publicly traded.
     Therefore, Exchangeable Shares are now classified as non-controlling
     interest, outside of Unitholders' equity. The Exchangeable Shares and Trust
     Units are considered economically equivalent since the exchange ratio is
     increased on each date that a distribution is paid on the Trust Units and
     all shares must be exchanged for either Trust Units or cash, based on the
     current market price of the Trust Units. Since the Exchangeable Shares are
     required to be exchanged, there is no permanent non-controlling interest.
     As a consequence of presenting Exchangeable Shares as non-controlling
     interest, a corresponding expense is recorded that reflects the earnings
     attributable to the non-controlling interest. When Exchangeable Shares are
     converted to Trust Units, the carrying value of non-controlling interest on
     the balance sheet is reclassified to Unitholders' capital. The Fund
     retroactively implemented the revised standard but there was no income
     impact on periods prior to 2005 given that the Exchangeable Shares were
     issued at the end of 2004. Non-controlling interest expense of $58,000 was
     recorded for the three month period ended March 31, 2005, with a
     corresponding decrease in net income.

2.   CAPITAL LEASE OBLIGATIONS
     The Fund has capital leases on a variety of property and equipment. Future
     minimum lease payments at June 30, 2005 consist of the following:

     2005                                         $     221
     2006                                               443
     2007                                             1,364
     -------------------------------------------------------
                                                  $   2,028
     Less amounts representing interest                (152)
     -------------------------------------------------------
                                                      1,876
     Current portion                                   (349)
     -------------------------------------------------------
                                                  $   1,527
     =======================================================


3.   BANK INDEBTEDNESS

     Advantage has a credit facility agreement with a syndicate of Canadian
     chartered banks which provides for a $325 million extendible revolving loan
     facility and a $10 million operating loan facility. The loan's interest
     rate is based on either prime or bankers' acceptance rates at the Fund's
     option subject to certain basis point or stamping fee adjustments ranging
     from 0% to 1.4% depending on the Fund's debt to cash flow ratio. The credit
     facilities are secured by a $500 million floating charge demand debenture,
     a general security agreement and a subordination agreement from the Fund
     covering all assets and cash flows. The credit facilities are subject to
     review on an annual basis, with the next review anticipated to take place
     in May 2006. Various borrowing options are available under the credit
     facilities, including prime rate-based advances and bankers' acceptances
     loans. The credit facilities constitute a revolving facility for a 364 day
     term which is extendible annually for a further 364 day revolving period.
     If not extended, the revolving credit facility is converted to a two year
     term facility with the first payment due one year and one day after
     commencement of the term. The credit facilities contain standard commercial
     covenants for facilities of this nature, and distributions by AOG to the
     Fund (and effectively by the Fund to Unitholders) are subordinated to the
     repayment of any amounts owing under the credit facilities. Distributions
     to Unitholders are not permitted if the Fund is in default of such credit
     facilities or if the amount of the Fund's outstanding indebtedness under
     such facilities exceeds the then existing current borrowing base. Interest
     payments under the debentures are also subordinated to indebtedness under
     the credit facilities and payments under the debentures are similarly
     restricted.

     At June 30, 2005, the effective interest rate on the outstanding amounts
     under the facility was approximately 4.4%.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 17 OF 20


4.   CONVERTIBLE DEBENTURES
     The convertible unsecured subordinated debentures pay interest
     semi-annually and are convertible at the option of the holder into Trust
     Units of Advantage at the applicable conversion price per Unit plus accrued
     and unpaid interest. Based on revised accounting standards (note 1),
     Advantage initially records the proceeds as a liability and equity
     component, net of issue costs, based on their relative fair market values.
     The details of the convertible debentures including fair market values
     initially assigned and issuance costs are as follows:



                                10.00%           9.00%           8.25%             7.75%           7.50%            TOTAL
     ----------------------------------------------------------------------------------------------------------------------
                                                                               
     Issue Date              Oct. 18, 2002   Jul. 8, 2003    Dec. 2, 2003     Sept. 15, 2004  Sept. 15, 2004
     Maturity Date           Nov. 1, 2007    Aug. 1, 2008    Feb. 1, 2009      Dec. 1, 2011    Oct. 1, 2009
     Conversion Price         $   13.30        $  17.00        $   16.50         $  21.00        $   20.25

     Liability component      $  52,722        $ 28,662        $  56,802         $ 47,444        $  71,631     $   257,261
     Equity component             2,278           1,338            3,198            2,556            3,369          12,739
     ----------------------------------------------------------------------------------------------------------------------
     Gross proceeds              55,000          30,000           60,000           50,000           75,000         270,000
     Issuance costs              (2,495)         (1,444)          (2,588)          (2,190)          (3,190)        (11,907)
     ----------------------------------------------------------------------------------------------------------------------
     NET PROCEEDS             $  52,505        $ 28,556        $  57,412         $ 47,810        $  71,810     $   258,093
     ======================================================================================================================


     The balance of debentures outstanding at June 30, 2005 and changes in the
     liability and equity components during the six month period then ended are
     as follows:



                                  10.00%         9.00%             8.25%            7.75%          7.50%            TOTAL
     ----------------------------------------------------------------------------------------------------------------------
                                                                                             
     Debentures outstanding     $  3,169       $  9,579        $  11,445         $ 49,835        $  69,853     $   143,881
     Liability component
      Balance at Dec. 31, 2004  $  3,923       $ 10,388        $  12,237         $ 45,548        $  64,337     $   136,433
      Accretion of discount           30             88              107              306              569           1,100
      Converted to Trust Units      (912)        (1,435)          (1,658)            (151)            (122)         (4,278)
     ----------------------------------------------------------------------------------------------------------------------
     BALANCE AT JUNE 30, 2005   $  3,041       $  9,041        $  10,686         $ 45,703        $  64,784     $   133,255
     ======================================================================================================================
     Equity component
      Balance at Dec. 31, 2004  $    163       $    472        $     675         $  2,444        $   3,010     $     6,764
      Converted to Trust Units       (38)           (65)             (91)              (8)              (6)           (208)
     ----------------------------------------------------------------------------------------------------------------------
     BALANCE AT JUNE 30, 2005   $    125       $    407        $     584         $  2,436        $   3,004     $     6,556
     ======================================================================================================================


     During the six months ended June 30, 2005 $4,569,000 debentures were
     converted resulting in the issuance of 284,727 Advantage Trust Units.



5.   EXCHANGEABLE SHARES
                                                                          NUMBER OF SHARES                   AMOUNT
     ----------------------------------------------------------------------------------------------------------------------
                                                                                                     
     Balance at December 31, 2004                                              1,450,030                   $    30,842
     Converted to Trust Units                                                 (1,339,614)                      (28,576)
     Non-controlling interest in net income                                            -                           135
     ----------------------------------------------------------------------------------------------------------------------
     Balance at June 30, 2005                                                    110,416                   $     2,401
     ======================================================================================================================


     AOG is authorized to issue an unlimited number of non-voting Exchangeable
     Shares. As partial consideration for the acquisition of Defiant which
     closed on December 21, 2004, AOG issued 1,450,030 Exchangeable Shares. The
     value of the Exchangeable Shares issued was determined based on the
     weighted average trading value of Advantage Trust Units during the two-day
     period before and after the terms of the acquisition were agreed to and
     announced. Each Exchangeable Share issued by AOG is exchangeable for
     Advantage Trust Units at any time (subject to the provisions of the Voting
     and Exchange Trust Agreement), on the basis of the applicable exchange
     ratio in effect at that time. The exchange ratio was equal to 1.08317 at
     June 30, 2005 and will be increased on each date that a distribution is
     paid by Advantage on the Advantage Trust Units by an amount equal to the
     cash distribution paid divided by the five-day


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 18 OF 20


     weighted average unit price preceding the record date. It is not
     anticipated that dividends will be declared or paid on the Exchangeable
     Shares. The Exchangeable Shares are not publicly traded. However, holders
     of AOG Exchangeable Shares can exchange all or a portion of their holdings
     at any time by giving notice to their investment advisor or AOG's transfer
     agent, Computershare Trust Company of Canada.

     The Exchangeable Shares will not be entitled to any vote at meetings of
     shareholders of AOG but will, through a Special Voting Unit of Advantage
     held by the Trustee as trustee under the Voting and Exchange Trust
     Agreement, be entitled to vote (on the basis of the number of votes equal
     to the number of Advantage Trust Units into which the Exchangeable Shares
     are then exchangeable) with the holders of Advantage Trust Units as a
     class. The Exchangeable Shares will be redeemable by AOG, in certain
     circumstances, and will be retractable by holders of Exchangeable Shares,
     in certain circumstances.

     Exchangeable Shares not previously redeemed or retracted will be redeemed
     by AOG or purchased by Advantage on January 15, 2008. If the number of
     Exchangeable Shares outstanding is less than 100,000, the Fund can elect to
     redeem the Exchangeable Shares for Trust Units or an amount in cash equal
     to the amount determined by multiplying the exchange ratio on the last
     business day prior to the redemption date by the current market price of a
     trust unit on the last business day prior to such redemption date.

6.   UNITHOLDERS' EQUITY

     (i) UNITHOLDERS' CAPITAL

     (a) Authorized

     Unlimited number of voting Trust Units

     (b) Issued



                                                           NUMBER OF UNITS         AMOUNT
     ---------------------------------------------------------------------------------------
                                                                          
     Balance at December 31, 2004 (restated - note 1)         49,674,783        $    515,544
     2004 non-cash performance incentive                         763,371              16,570
     Issued on conversion of debentures                          284,727               4,486
     Issued on conversion of exchangeable shares               1,367,604              28,576
     Issued for cash, net of costs                             5,250,000             107,616
     ---------------------------------------------------------------------------------------
     Balance at June 30, 2005                                 57,340,485        $    672,792
     =======================================================================================


     On January 19, 2005 Advantage issued 763,371 Trust Units to partially
     satisfy the obligation related to the 2004 year end performance fee.

     On February 9, 2005 Advantage issued 5,250,000 Trust Units at $21.65 per
     Trust Unit for net proceeds of $107.6 million (net of Underwriters' fees
     and other issue costs of $6.1 million). The net proceeds of the offering
     were used to pay down debt incurred in the acquisition of Defiant, for 2005
     capital expenditures and for general corporate purposes.



     (c) Trust Units Rights Incentive Plan
                                                            SERIES A                                 SERIES B
                                                    NUMBER            PRICE                 NUMBER              PRICE
     ------------------------------------------------------------------------------------------------------------------
                                                                                                 
     Balance at December 31, 2004                   85,000          $    5.05                225,000         $   16.75
     Reduction of exercise price                         -              (1.62)                     -             (1.62)
     ------------------------------------------------------------------------------------------------------------------
     Balance at June 30, 2005                       85,000          $    3.43                225,000         $   15.13
     ==================================================================================================================


     The Series A Trust Unit rights were issued in 2002 and the Fund was unable
     to determine the fair value for the rights granted under the Plan at that
     time. The Fund has disclosed pro forma results as if the Fund followed the
     intrinsic value methodology in accounting for such rights. The intrinsic
     value methodology would result in recording compensation expense for the
     rights based on the underlying Trust Unit price at the date of exercise or
     at the date of the financial statements for unexercised rights as compared
     to the exercise price.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 19 OF 20




                                                        THREE             THREE              SIX              SIX
                                                    MONTHS ENDED      MONTHS ENDED      MONTHS ENDED     MONTHS ENDED
     PRO FORMA RESULTS                              JUNE 30, 2005     JUNE 30, 2004     JUNE 30, 2005    JUNE 30, 2004
     --------------------------------------------------------------------------------------------------------------------
                                                                   (restated - note 1)                (restated - note 1)
                                                                                              
     Net income as reported                          $    26,537       $    9,770       $    30,552       $    14,218
     Less compensation expense (recovery)
         for rights issued in 2002                          (145)              42              (292)              233
     --------------------------------------------------------------------------------------------------------------------
     Pro Forma net income                            $    26,682       $    9,728       $    30,844       $    13,985
     ====================================================================================================================

     Net income per Trust Unit - basic and diluted
         As reported                                 $      0.46       $     0.25       $      0.55       $      0.37
         Pro Forma                                   $      0.46       $     0.25       $      0.55       $      0.36
     --------------------------------------------------------------------------------------------------------------------



7.   FINANCIAL INSTRUMENTS



     As at June 30, 2005 the Fund has the following hedges in place:

     DESCRIPTION OF HEDGE                 TERM                    VOLUME                 AVERAGE PRICE
     -------------------------------------------------------------------------------------------------
                                                                       
     NATURAL GAS - AECO
         Fixed price              April to October 2005        34,123 mcf/d              Cdn$7.45/mcf
         Collar                   April to October 2005        11,374 mcf/d       Floor  Cdn$6.86/mcf
                                                                                Ceiling  Cdn$8.18/mcf
         Collar                   April to October 2005        11,374 mcf/d       Floor  Cdn$7.02/mcf
                                                                                Ceiling  Cdn$8.02/mcf
     CRUDE OIL - WTI
         Fixed price             April to September 2005       1,750 bbls/d              US$52.11/bbl
         Collar                   April to October 2005        1,750 bbls/d       Floor  US$47.00/bbl
                                                                                Ceiling  US$56.75/bbl


     As at June 30, 2005 the settlement value of the hedges outstanding was
     approximately $1.3 million and has been charged to income as an unrealized
     hedging loss.

8.   PERFORMANCE INCENTIVE
     The Manager of the Fund is entitled to earn an annual performance incentive
     fee which is calculated based on the total return of the Fund. During
     interim periods no amount is paid to the Manager, nor is the Manager
     entitled to receive any payment related to the Fund's performance as the
     actual amount is only calculated and paid on an annual basis.

     The Manager earns the performance incentive fee when the Fund's total
     annual return exceeds 8%. The total annual return is calculated at the end
     of the year by dividing the year over year change in Unit price plus cash
     distributions by the opening Unit price. The 2005 opening Unit price was
     $21.71 and cash distributions for the six months ended June 30, 2005
     amounted to $1.62 per Trust Unit. Ten percent of the amount of the total
     annual return in excess of 8% is multiplied by the market capitalization
     (defined as the opening Unit price multiplied by the average number of
     Units outstanding during the year) to determine the performance incentive.
     No performance fee has been accrued for the period as the total annual
     return was less than the 8% prorated threshold. The Manager does not
     receive any form of compensation in respect of acquisition or divestiture
     activities.


PRESS RELEASE                                                    AUGUST 11, 2005
ADVANTAGE ENERGY INCOME FUND                                       PAGE 20 OF 20


FORWARD-LOOKING INFORMATION

The information in this release contains certain forward-looking statements that
involve substantial known and unknown risks and uncertainties, certain of which
are beyond Advantage's control, including: the impact of general economic
conditions, industry conditions, changes in laws and regulations including the
adoption of new environmental laws and regulations and changes in how they are
interpreted and enforced, increased competition, fluctuations in commodity
prices and foreign exchange and interest rates, stock market volatility and
obtaining required approvals of regulatory authorities. Advantage's actual
results, performance or achievement could differ materially from those expressed
in, or implied by, such forward-looking statements and, accordingly, no
assurances can be given that any of the events anticipated by the
forward-looking statements will transpire or occur or, if any of them do, what
benefits that Advantage will derive from them.

For further information contact:

                 Mr. Gary F. Bourgeois, VP Corporate Development
                              Phone: (416) 945-6636
                            TOLL FREE: 1-866-393-0393

                          ADVANTAGE ENERGY INCOME FUND
                            3100, 150 - 6th Avenue SW
                            Calgary, Alberta T2P 3Y7
                              Phone: (403) 261-8810
                               Fax: (403) 262-0723
                        Web Site: www.advantageincome.com
                      E-mail: advantage@advantageincome.com