Covanta Posts Strong Third Quarter, Revenues Up by 13%

Date: October 24, 2007

Source: Covanta Holding Corporation

Covanta Holding Corporation Reports 2007 Third Quarter Results

Reaffirms 2007 Guidance

Covanta Holding Corporation (NYSE: CVA) reported financial results today for the three months ended September 30, 2007. Diluted earnings per share grew 19 percent to $0.25 in the third quarter of 2007, which included a net benefit of $0.01 per diluted share from net insurance recoveries relating to a fire at the Company's SEMASS facility which occurred in the first quarter of 2007. These results compare to diluted earnings per share of $0.21 in the prior year comparative period.

Third Quarter Results

For the three months ended September 30, 2007 total Company operating revenues grew 13 percent to $352 million, up from $311 million in the prior year comparative period.

The Company's domestic segment's operating revenues grew by 12 percent to $312 million, driven primarily by construction revenues related to the Hillsborough County facility expansion, revenue from four facilities added to the Company's portfolio this year, and contractual service fee escalation. International revenues of $37 million grew by 32 percent primarily due to higher electricity sales at two facilities located in India.

Adjusted EBITDA at the Company's principal subsidiary Covanta Energy Corporation ("Covanta Energy") was $152 million in the third quarter and total Company Cash Flow Provided by Operating Activities ("Operating Cash Flow") was $117 million for the same period.

YTD Results

For the nine months ended September 30, 2007, total Company operating revenues rose 9 percent to $1.04 billion. Covanta Energy's Adjusted EBITDA was $397 million and total Company Operating Cash Flow was $260 million for the year-to-date period.

"We are very pleased with the continued progress during the quarter on our growth initiatives. In the last two months we signed a definitive agreement to design, build and operate a 1,700 metric tonnes per day Energy-from-Waste facility in Dublin, Ireland, and we acquired two Energy-from-Waste facilities and four transfer stations to expand our portfolio in the northeastern United States. At the same time we continue to see improving growth opportunities in all our key markets, driven by higher energy prices and the environmental benefits of Energy-from-Waste," said Anthony Orlando, President and Chief Executive Officer of Covanta. "We are also pleased with our continued strong operating performance and smooth integration of the businesses we have acquired. This performance is a testament to Covanta's relentless focus on client service and operational excellence throughout the organization."

2007 Guidance

The Company is reaffirming its full year 2007 guidance for the following key metrics:

    -- Covanta Energy Adjusted EBITDA in the range of $545 million to $565
       million;
    -- Covanta diluted earnings per share in the range of $0.65 to $0.75; and
    -- Covanta's Operating Cash Flow is in the range of $345 million to $375
       million.

Conference Call Information

Covanta will host a conference call at 8:30 am (Eastern) on Thursday, October 25, 2007 to discuss its results for the three months ended September 30, 2007. Prepared remarks will be followed by a question-and-answer session. To participate, please dial 888-466-4447 approximately 10 minutes prior to the scheduled start of the call. If you are calling from outside of the United States, please dial 719-325-2188. The conference call will also be web cast live on the Investor Relations section of the Covanta website at www.covantaholding.com.

A replay of the conference call will be available from 11:00 am (Eastern) on Thursday, October 25, 2007 through midnight (Eastern) Thursday, November 1, 2007. To access the replay, please dial 888-203-1112 or 719-457-0820 and use the replay pass code: 2419442. The web cast will also be archived on www.covantaholding.com.

About Covanta

Covanta is an internationally recognized owner and operator of Energy- from-Waste and other renewable energy projects. Covanta's energy-from-waste facilities convert municipal solid waste into renewable energy for numerous communities, predominantly in the United States. As a premier operator of large-scale Energy-from-Waste facilities, Covanta is proud to offer an environmentally sound solution to communities' solid waste disposal needs. With over 30 facilities worldwide, Covanta uses municipal solid waste as a fuel to generate clean, renewable energy. Covanta's modern Energy-from-Waste facilities safely and securely turn 15 million tons of waste into over 8 million megawatt hours of clean, renewable electricity each year and create 10 billion pounds of steam that are sold to a variety of industries. For more information, visit www.covantaenergy.com.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements in this press release may constitute "forward-looking" statements as defined in Section 27A of the Securities Act of 1933 (the "Securities Act"), Section 21E of the Securities Exchange Act of 1934 (the "Exchange Act"), the Private Securities Litigation Reform Act of 1995 (the "PSLRA") or in releases made by the Securities and Exchange Commission ("SEC"), all as may be amended from time to time. Such forward-looking statements involve known and unknown risks, uncertainties and other important factors that could cause the actual results, performance or achievements of Covanta and its subsidiaries, or industry results, to differ materially from any future results, performance or achievements expressed or implied by such forward-looking statements. Statements that are not historical fact are forward-looking statements. Forward-looking statements can be identified by, among other things, the use of forward-looking language, such as the words "plan," "believe," "expect," "anticipate," "intend," "estimate," "project," "may," "will," "would," "could," "should," "seeks," or "scheduled to," or other similar words, or the negative of these terms or other variations of these terms or comparable language, or by discussion of strategy or intentions. These cautionary statements are being made pursuant to the Securities Act, the Exchange Act and the PSLRA with the intention of obtaining the benefits of the "safe harbor" provisions of such laws. Covanta cautions investors that any forward-looking statements made by Covanta are not guarantees or indicative of future performance. Important assumptions and other important factors that could cause actual results to differ materially from those forward-looking statements with respect to Covanta, include, but are not limited to, those factors, risks and uncertainties that are described in Item 1A of its Annual Report on Form 10-K for the year ended December 31, 2006, and in securities filings by Covanta with the SEC.

Although Covanta believes that its plans, intentions and expectations reflected in or suggested by such forward-looking statements are reasonable, actual results could differ materially from a projection or assumption in any forward-looking statements. Covanta's future financial condition and results of operations, as well as any forward-looking statements, are subject to change and inherent risks and uncertainties. The forward-looking statements contained in this press release are made only as of the date hereof and Covanta does not have or undertake any obligation to update or revise any forward-looking statements whether as a result of new information, subsequent events or otherwise, unless otherwise required by law.



      Covanta Holding Corporation                                    Exhibit 1
      Condensed Consolidated Statements of Operations

                                      Three Months Ended   Nine Months Ended
                                        September 30,        September 30,
                                        2007    2006 (A)    2007     2006 (A)
                          (Unaudited, in thousands, except per share amounts)

       Operating revenues
        Waste and service revenues    $212,088  $203,103   $629,039  $607,973
        Electricity and steam sales    123,684   104,019    364,165   329,610
        Other operating revenues        16,578     3,993     44,495    13,024
         Total operating revenues      352,350   311,115  1,037,699   950,607

       Operating expenses
        Plant operating expenses (B)   187,874   162,211    589,442   524,456
        Depreciation and amortization
         expense                        50,540    47,752    147,019   142,987
        Net interest expense on
         project debt                   12,501    14,722     40,992    46,013
        General and administrative
         expenses                       18,483    17,746     60,704    52,051
        Write-down of assets, net
         of insurance recoveries (B)       -         -        4,925       -
        Other operating expenses        11,325    (2,959)    37,498     1,251
          Total operating expenses     280,723   239,472    880,580   766,758

       Operating income                 71,627    71,643    157,119   183,849

       Other income (expense)
        Investment income                1,963     2,483      8,966     7,801
        Interest expense               (16,018)  (26,968)   (51,996)  (82,812)
        Loss on extinguishment of
         debt (C)(D)                       (65)      -      (32,071)   (6,795)
         Total other expenses          (14,120)  (24,485)   (75,101)  (81,806)

       Income before income tax expense,
        minority interests and equity in net
        income from unconsolidated
        investments                     57,507    47,158     82,018   102,043
       Income tax expense              (23,768)  (18,870)   (34,414)  (29,795)
       Minority interests               (2,055)   (1,982)    (5,544)   (4,861)
       Equity in net income from
        unconsolidated investments       6,731     4,945     16,153    26,460

       Net Income                      $38,415   $31,251    $58,213   $93,847

       Earnings Per Share:
       Basic                             $0.25     $0.21      $0.38     $0.65
       Weighted Average Shares         153,035   146,418    152,504   145,393

       Diluted                           $0.25     $0.21      $0.38     $0.64
       Weighted Average Shares         154,319   147,266    153,844   146,710


    (A) Certain prior period amounts have been reclassified to conform to
        current period presentation.

    (B) On March 31, 2007, the SEMASS energy-from-waste facility experienced a
        fire in the front-end receiving portion of the facility. Damage was
        extensive to this portion of the facility and operations at the
        facility were suspended completely for approximately 20 days. As a
        result of this loss, Covanta recorded an asset impairment of $18.3
        million, pre-tax, in the first quarter of 2007, which represented a
        preliminary estimate of  the net book value of the assets destroyed.
        Based upon additional analysis as the facility is fully restored,
        Covanta may increase the impairment recorded.

        The cost of repair or replacement, and business interruption losses,
        are insured under the terms of applicable insurance policies, subject
        to deductibles. Covanta cannot predict the timing of when it will
        receive the proceeds under such policies. During the second quarter of
        2007, Covanta recorded insurance recoveries of $13.3 million related
        to repair and reconstruction and $2.7 million related to clean-up
        costs.  During the third quarter of 2007, Covanta recorded insurance
        recoveries of $2.0 million related to business interruption losses.
        Insurance recoveries are recorded as a reduction to the loss related
        to the write-down of assets where such recoveries relate to repair and
        reconstruction costs, or as a reduction to operating expenses where
        such recoveries relate to other costs or business interruption losses.
        Covanta expects the cost of repair or replacement and business
        interruption losses it does not recover, representing deductibles
        under such policies, will not be material.

    (C) During January and February 2007, Covanta completed public offerings
        of common stock and 1.00% Senior Convertible Debentures, and Covanta
        Energy closed on new credit facilities. In addition, in February 2007,
        Covanta Energy completed tender offers for outstanding notes
        previously issued by its intermediate subsidiaries.  As a result of
        the recapitalization plan, Covanta recognized a loss on extinguishment
        of debt charge of approximately $32.1 million, pre-tax, which was
        comprised of the write- down of deferred financing costs, tender
        premiums paid for the intermediate subsidiary debt, and a call premium
        paid for a credit facility refinanced, which was in effect prior to
        Covanta Energy's new credit facilities.  These amounts were partially
        offset by the write-down of unamortized premiums relating to the
        intermediate subsidiary debt and a gain associated with the settlement
        of interest rate swap agreements.

    (D) As a result of amendments to Covanta Energy's financing arrangements
        in May 2006, in the three months ended June 30, 2006, Covanta
        recognized a loss on extinguishment of debt of $6.8 million, pre-tax,
        which was comprised of the write-down of deferred financing costs and
        a call premium paid on the extinguishment.



     Covanta Holding Corporation                                     Exhibit 2
     Reconciliation of Net Income to Adjusted EBITDA

                       Three Months Ended       Nine Months Ended   Full Year
                           September 30,          September 30,     Estimated

                           2007      2006         2007      2006      2007
                                 (Unaudited, in thousands)

     Net Income -
      Covanta Holding
      Corporation         $38,415   $31,251      $58,213   $93,847

     Less:  Net (Loss)
      Income - All Other   (2,898)      427       (3,746)    1,476

     Net Income -
      Covanta Energy                                                $99,000 -
      Corporation          41,313    30,824       61,959    92,371  $114,000

     Depreciation and
      amortization
      expense              50,499    47,726      146,941   142,926    193,000

     Debt service:
        Net interest
         expense on
         project debt      12,501    14,722       40,992    46,013
        Interest expense   14,510    26,968       48,021    82,812
        Investment
         income            (1,031)   (1,771)      (4,632)   (5,905)
      Subtotal debt
       service             25,980    39,919       84,381   122,920   114,000

     Income tax expense    21,464    18,406       31,235    28,556   61,000 -
                                                                     69,000

     Other Adjustments: (A)
        Change in unbilled
         service
         receivables        5,087     4,360       15,278    12,622
        Non-cash compensation
         expense            3,645     1,498        9,766     4,866
        Other               1,120     2,443        4,757     7,926
      Subtotal other                                                 38,000 -
       adjustments          9,852     8,301       29,801    25,414   35,000

     Write-down of assets, net of
      insurance
      recoveries (B)          -         -          4,925       -

     Loss on extinguishment
      of debt (C)(D)           65       -         32,071     6,795    32,000

     Minority interests     2,432     2,262        6,160     5,498     8,000
     Total adjustments    110,292   116,614      335,514   332,109

     Adjusted EBITDA -
      Covanta Energy                                                $545,000 -
      Corporation        $151,605  $147,438     $397,473  $424,480  $565,000

    (A) These items represent amounts that are non-cash in nature.

    (B) On March 31, 2007, the SEMASS energy-from-waste facility experienced a
        fire in the front-end receiving portion of the facility. Damage was
        extensive to this portion of the facility and operations at the
        facility were suspended completely for approximately 20 days. As a
        result of this loss, Covanta recorded an asset impairment of $18.3
        million, pre-tax, in the first quarter of 2007, which represented a
        preliminary estimate of the net book value of the assets destroyed.
        Based upon additional analysis as the facility is fully restored,
        Covanta may increase the impairment recorded.

        The cost of repair or replacement, and business interruption losses,
        are insured under the terms of applicable insurance policies, subject
        to deductibles. Covanta cannot predict the timing of when it will
        receive the proceeds under such policies. During the second quarter of
        2007, Covanta recorded insurance recoveries of $13.3 million related
        to repair and reconstruction and $2.7 million related to clean-up
        costs. During the third quarter of 2007, Covanta recorded insurance
        recoveries of $2.0 million related to business interruption losses.
        Insurance recoveries are recorded as a reduction to the loss related
        to the write-down of assets where such recoveries relate to repair and
        reconstruction costs, or as a reduction to operating expenses where
        such recoveries relate to other costs or business interruption losses.
        Covanta expects the cost of repair or replacement and business
        interruption losses it does not recover, representing deductibles
        under such policies, will not be material.

    (C) During January and February 2007, Covanta completed public offerings
        of common stock and 1.00% Senior Convertible Debentures, and Covanta
        Energy closed on new credit facilities. In addition, in February 2007,
        Covanta Energy completed tender offers for outstanding notes
        previously issued by its intermediate subsidiaries.  As a result of
        the recapitalization plan, Covanta recognized a loss on extinguishment
        of debt charge of approximately $32.1 million, pre-tax, which was
        comprised of the write-down of deferred financing costs, tender
        premiums paid for the intermediate subsidiary debt, and a call premium
        paid for a credit facility refinanced, which was in effect prior to
        Covanta Energy's new credit facilities.  These amounts were partially
        offset by the write-down of unamortized premiums relating to the
        intermediate subsidiary debt and a gain associated with the settlement
        of interest rate swap agreements.

    (D) As a result of amendments to Covanta Energy's financing arrangements
        in May 2006, in the three months ended June 30, 2006, Covanta
        recognized a loss on extinguishment of debt of $6.8 million, pre-tax,
        which was comprised of the write-down of deferred financing costs and
        a call premium paid on the extinguishment.



      Covanta Energy Corporation                                     Exhibit 3
      Reconciliation of Cash Flow Provided by Operating Activities to
       Adjusted EBITDA

                           Three Months Ended      Nine Months Ended Full Year
                               September 30,         September 30,   Estimated
                               2007      2006        2007      2006       2007
                                    (Unaudited, in thousands)
      Cash flow provided by
       operating activities
       - Covanta Energy                                              $345,000-
       Corporation           $119,450  $118,710    $261,039  $236,670 $375,000

      Debt Service             25,980    39,919      84,381   122,920  114,000

      Amortization of debt
       premium and deferred
       financing costs          2,543     4,025       9,427    14,062  14,000

      Other                     3,632   (15,216)     42,626    50,828  72,000-
                                                                       62,000

      Adjusted EBITDA -
       Covanta Energy                                                $545,000-
       Corporation           $151,605  $147,438    $397,473  $424,480 $565,000



      Covanta Holding Corporation                                   Exhibit 4
      Statements of Cash Flows Selected Data

                            Three Months Ended    Nine Months Ended  Full Year
                              September 30,        September 30,     Estimated
                              2007      2006      2007        2006       2007
                                    (Unaudited, in thousands)


      Cash Flow Provided by
       Operating                                                     $345,000-
       Activities (A)     $117,359  $118,314     $259,897  $234,979  $375,000

      Uses of Cash Flow
       Provided by
       Operating
       Activities
      Purchase of property,
       plant and equipment (B)
        Capital expenditures
         associated with
         SEMASS fire (C)   $(4,942)  $     -     $(15,321)  $       -
        Capital expenditures
         associated with
         acquisitions (D)   (3,365)        -       (3,365)          -
        All other capital
         expenditures (E)   (8,908)   (8,896)     (41,545)    (35,693)(55,000)
      Total purchases of
       property, plant and
       equipment          $(17,215)  $(8,896)    $(60,231)  $ (35,693)

      Acquisition of
       businesses         $(55,816)  $     -     $(63,255)   $      -
      Purchase of equity
       interest           $      -   $     -     $(10,253)   $      -
      Principal payments on
       project debt       $(7,904)   $(17,603)   $(73,393)   $(86,612)
      Principal payments on
       long-term debt (F) $(7,763)   $(41)    $(1,168,148)  $(120,080)

    (A) Guidance is only provided for cash flow provided by operating
        activities for Covanta.

    (B) Purchase of property, plant and equipment is also referred to as
        Capital Expenditures.

    (C) During the nine months ended September 30, 2007, Capital Expenditures
        were incurred that related to the repair and replacement of assets at
        the SEMASS energy-from-waste facility that were damaged by a fire on
        March 31, 2007.  The cost of repair or replacement is insured under
        the terms of the applicable insurance policy, subject to deductibles.
        Covanta cannot predict the timing of when all proceeds under such
        policy will be received.  During the second quarter of 2007, Covanta
        received $7.3 million in insurance proceeds related to property damage
        and is included as Property Insurance Proceeds in the investing
        activities section of Covanta's statement of cash flows for the nine
        months ended September 30, 2007.  Covanta expects the cost of repair
        or replacement not recovered, representing deductibles under such
        policy, will not be material.

    (D) On July 16, 2007, Covanta Energy acquired two biomass energy
        facilities and a biomass energy fuel management business.  In
        connection with the acquisition, Covanta Energy expects to invest
        between $15 and $20 million in capital improvements to increase the
        facilities' productivity and improve environmental performance.  The
        project to increase the facilities' productivity and improve
        environmental performance had been commenced by the seller.  Covanta
        Energy expects to incur such Capital Expenditures for the project
        during the remainder of 2007 and first half of 2008.  Although, in
        accordance with GAAP, this spending will be recorded as a component of
        purchase of property, plant and equipment on Covanta's statement of
        cash flows, management considers this spending as a component of the
        cost to acquire these businesses since these major capital
        improvements are required to achieve desired facility performance.

    (E) Capital expenditures for existing facilities.

    (F) During January and February 2007, Covanta completed public offerings
        of common stock and 1.00% Senior Convertible Debentures, and Covanta
        Energy closed on new credit facilities. In addition, in February 2007,
        Covanta completed tender offers for outstanding notes previously
        issued by its intermediate subsidiaries. Covanta has redeemed all of
        the remaining intermediate subsidiary debt during the second and third
        quarter of 2007.



       Covanta Holding Corporation                                   Exhibit 5
       Components of Diluted Earnings Per Share

                                         Three Months Ended  Nine Months Ended
                                           September 30,      September 30,
                                           2007     2006      2007     2006
                                                      (Unaudited)

       Write-down of assets, net of
        insurance recoveries and tax (A)   $  -     $  -      $(0.02)  $  -

       Impact of SEMASS fire, net of
        insurance recoveries and tax (B)     0.01      -       (0.01)     -

       Loss on extinguishment of debt,
        net of tax (C)                        -        -       (0.12)   (0.03)

       Philippine Tax Ruling - Cumulative
        Adjustment (D)                        -        -         -       0.05

       APB 23 - Cumulative Adjustment (E)     -        -         -       0.07

       All other                             0.24     0.21      0.53     0.55

       Diluted Earnings Per Share          $ 0.25   $ 0.21    $ 0.38   $ 0.64

    (A) On March 31, 2007, the SEMASS energy-from-waste facility experienced a
        fire in the front-end receiving portion of the facility. Damage was
        extensive to this portion of the facility and operations at the
        facility were suspended completely for approximately 20 days. As a
        result of this loss, Covanta recorded an asset impairment of $18.3
        million, pre-tax, in the first quarter of 2007, which represented a
        preliminary estimate of the net book value of the assets destroyed.
        Based upon additional analysis as the facility is fully restored,
        Covanta may increase the impairment recorded.

        The cost of repair or replacement, and business interruption losses,
        are insured under the terms of applicable insurance policies, subject
        to deductibles. Covanta cannot predict the timing of when it will
        receive the proceeds under such policies. During the second quarter of
        2007, Covanta recorded insurance recoveries of $13.3 million related
        to repair and reconstruction and $2.7 million related to clean-up
        costs. During the third quarter of 2007, Covanta recorded insurance
        recoveries of $2.0 million related to business interruption losses.
        Insurance recoveries are recorded as a reduction to the loss related
        to the write-down of assets where such recoveries relate to repair and
        reconstruction costs, or as a reduction to operating expenses where
        such recoveries relate to other costs or business interruption losses.
        Covanta expects the cost of repair or replacement and business
        interruption losses it does not recover, representing deductibles
        under such policies, will not be material.

    (B) This amount represents plant operating expenses, net of business
        interruption insurance recoveries related to the SEMASS fire, but
        excludes lost revenue during the restoration of the SEMASS energy-
        from-waste facility.

    (C) During January and February 2007, Covanta completed public offerings
        of common stock and 1.00% Senior Convertible Debentures, and Covanta
        Energy closed on new credit facilities. In addition, in February 2007,
        Covanta Energy completed tender offers for outstanding notes
        previously issued by its intermediate subsidiaries.  As a result of
        the recapitalization plan, Covanta recognized a loss on extinguishment
        of debt charge of approximately $32.1 million, pre-tax, which was
        comprised of the write-down of deferred financing costs, tender
        premiums paid for the intermediate subsidiary debt, and a call premium
        paid for a credit facility refinanced, which was in effect prior to
        Covanta Energy's new credit facilities.  These amounts were partially
        offset by the write-down of unamortized premiums relating to the
        intermediate subsidiary debt and a gain associated with the settlement
        of interest rate swap agreements.

        As a result of amendments to Covanta Energy's financing arrangements
        in May 2006, in the three months ended June 30, 2006, Covanta
        recognized a loss on extinguishment of debt of $6.8 million, pre-tax,
        which was comprised of the write-down of deferred financing costs and
        a call premium paid on the extinguishment.

    (D) Covanta is a minority shareholder in the "Quezon Project Company" that
        owns the Quezon Power, Inc. ("Quezon") facility in the Philippines.
        In June 2006, the Philippine tax authorities issued a ruling
        clarifying the deductibility of unrealized foreign exchange losses to
        the Quezon Project Company.  As a result, the Quezon Project Company
        recorded a cumulative deferred income tax benefit in the quarter ended
        June 30, 2006 which increased Covanta's equity in net income from
        unconsolidated investments by $7 million or 5 cents per diluted share
        for the three months ended June 30, 2006.  The impact of this ruling,
        on periods subsequent to the quarter ended June 30, 2006, will be
        based on the fluctuations in the value of the Philippine peso versus
        the US dollar in those respective periods.

    (E) During the quarter ended June 30, 2006, consistent with its strategy
        to pursue international investment opportunities, Covanta adopted the
        permanent reinvestment exception under APB 23 with respect to the
        earnings of its foreign subsidiaries.  Pursuant to this election,
        Covanta now considers foreign earnings to be permanently reinvested
        and, as a result, Covanta recorded a catch-up, cumulative adjustment
        in the second quarter of 2006 of $10 million or 7 cents per diluted
        share to reflect the reversal of the deferred taxes that were accrued
        over the last two years prior to the election under APB 23.



      Covanta Energy Corporation                                     Exhibit 6
      Components of Adjusted EBITDA

                                       Three Months Ended   Nine Months Ended
                                         September 30,       September 30,
                                         2007      2006      2007      2006
                                             (Unaudited, in thousands)

      Philippine Tax Ruling -
       Cumulative Adjustment (A)       $    -    $    -    $    -    $  7,037

      Impact of SEMASS fire (B)           1,762       -      (2,550)      -

      All other                         149,843   147,438   400,023   417,443

      Adjusted EBITDA - Covanta Energy
       Corporation                     $151,605  $147,438  $397,473  $424,480

    (A) Covanta is a minority shareholder in the "Quezon Project Company" that
        owns the Quezon facility in the Philippines.  In June 2006, the
        Philippine tax authorities issued a ruling clarifying the
        deductibility of unrealized foreign exchange losses to the Quezon
        Project Company. As a result, the Quezon Project Company recorded a
        cumulative deferred income tax benefit in the quarter ended June 30,
        2006 which increased Covanta's equity in net income from
        unconsolidated investments by $7 million for the three months ended
        June 30, 2006.  The impact of this ruling, on periods subsequent to
        the quarter ended June 30, 2006, will be based on the fluctuations in
        the value of the Philippine peso versus the US dollar in those
        respective periods.

    (B) This amount represents plant operating expenses, net of business
        interruption insurance recoveries related to the SEMASS fire, but
        excludes lost revenue during the restoration of the SEMASS energy-
        from-waste facility.

Discussion of Non-GAAP Financial Measures

To supplement Covanta's results prepared in accordance with United States generally accepted accounting principles ("GAAP"), Covanta uses the measure of Adjusted EBITDA, which is a non-GAAP measure as defined by the Securities and Exchange Commission. The non-GAAP financial measure of Adjusted EBITDA described below, and used in the tables above, is not intended as a substitute and should not be considered in isolation from measures of financial performance or liquidity prepared in accordance with GAAP. In addition, Covanta's non-GAAP financial measure may be different from non-GAAP measures used by other companies, limiting their usefulness for comparison purposes.

Covanta uses a number of different financial measures, both GAAP and non-GAAP, in assessing the overall performance of its business. Covanta uses Adjusted EBITDA to provide further information that is useful to an understanding of the financial covenants contained in its credit facilities, and as additional ways of viewing aspects of its operations that, when viewed with the GAAP results and the accompanying reconciliations to corresponding GAAP financial measures, provide a more complete understanding of Covanta's business. The presentation of Adjusted EBITDA is intended to enhance the usefulness of Covanta's financial information by providing a measure which management internally uses to assess and evaluate the overall performance of its business and those of possible acquisition candidates, and highlight trends in the overall business. Covanta also uses this non-GAAP financial measure as a significant criterion of performance-based components of employee compensation.

Adjusted EBITDA should not be considered as an alternative to net income or an alternative to cash flow provided by operating activities as indicators of Covanta's performance or liquidity or any other measures of performance or liquidity derived in accordance with GAAP.

Adjusted EBITDA

The calculation of Adjusted EBITDA is based on the definition in Covanta's credit facilities. Adjusted EBITDA is defined as earnings before interest, taxes, depreciation and amortization, as adjusted for additional items subtracted from or added to net income for Covanta's principal subsidiary, Covanta Energy.

Under its credit facilities, Covanta is required to satisfy certain financial covenants, including certain ratios of which Adjusted EBITDA is an important component. Compliance with such financial covenants is expected to be the principal limiting factor which will affect Covanta's ability to engage in a broad range of activities in furtherance of its business, including making certain investments, acquiring businesses and incurring additional debt. Covanta was in compliance with these covenants as of September 30, 2007. Failure to comply with such financial covenants could result in a default under Covanta's credit facilities, which default would have a material adverse affect on its financial condition and liquidity.

These financial covenants are measured on a trailing four quarter period basis and the material covenants are as follows:

    -- maximum Covanta Energy leverage ratio of 4.50 to 1.00 (which declines
       for quarterly periods after September 30, 2007), which measures Covanta
       Energy's Consolidated Adjusted Debt, (which is the principal amount of
       its consolidated debt less certain restricted funds dedicated to
       repayment of project debt principal and construction costs) to its
       Adjusted EBITDA; and

    -- minimum Covanta Energy interest coverage ratio of 3.00 to 1.00, which
       measures Covanta Energy's Adjusted EBITDA to its consolidated interest
       expense plus certain interest expense of ours, to the extent paid by
       Covanta Energy.

In order to provide a meaningful basis for comparison, Covanta is providing information with respect to Covanta Energy's Adjusted EBITDA for the three and nine months ended September 30, 2007 and 2006, reconciled for each such period to net income and cash flow provided by operating activities, which are believed to be the most directly comparable measures under GAAP. Covanta is providing similar reconciliations with respect to its guidance for full year 2007 Adjusted EBITDA.

Prior Use of Free Cash Flow

Previously, Covanta has provided annual guidance for Free Cash Flow as a liquidity measure, and through the first quarter of 2007 furnished Free Cash Flow results on a quarterly basis. Free Cash Flow had been used by management as a liquidity measure which provided useful information about the amount of cash flow generated by Covanta available for the repayment of debt and for strategic opportunities, including, among others, investing in the business, making strategic acquisitions and constructing new or expanding existing facilities.

Covanta calculated Free Cash Flow as cash flow provided by operating activities, less purchases of property, plant and equipment (also referred to as "Capital Expenditures"). The amount of Capital Expenditures Covanta has historically incurred were primarily related to maintaining existing operating facilities. However, Covanta's Capital Expenditures, as calculated and disclosed in accordance with GAAP, can materially increase in certain situations that are outside of the scope of maintaining its existing facilities and do not affect its ability to repay debt or invest in strategic opportunities, including those where we incur Capital Expenditures that are:

    -- related to the construction of new facilities or the expansion of
       existing facilities,
    -- incurred directly in connection with the acquisition of new
       businesses, or
    -- reimbursed by third parties or through insurance proceeds.

In addition, with its new capital structure that closed during the first quarter of 2007, Covanta now has greater, but not unrestricted, flexibility to use its cash flow for a variety of purposes. As a result, management has determined that a more clear and useful measure of its cash flow available for the repayment of debt and for strategic opportunities, is cash flow provided by operating activities, which is a GAAP measure. Beginning with the second quarter of 2007, Covanta furnished such information, as well as additional information regarding how it has utilized its cash flow provided by operating activities to repay debt, invest in strategic opportunities, and incur Capital Expenditures.

For more information, contact:
Gavin Bell
Vice President, Investor Relations & Corporate Communications
Covanta Holding Corporation
(973) 882-7107
GBell@CovantaHolding.com.
Web site: www.covantaholding.com / www.covantaenergy.com.

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