Covanta to Announce First Quarter Earnings on April 23

Date: April 10, 2008

Source: Covanta Holding Corporation

Covanta Holding Corporation to Host Conference Call on April 24, 2008

Covanta Holding Corporation (NYSE: CVA) will host a conference call at 8:30 AM (Eastern) on Thursday, April 24, 2008 to discuss its first quarter results. The Company will release its financial results for the first quarter after the market close on Wednesday, April 23, 2008. In addition, Covanta will make supplemental information available on April 23, 2008 prior to the call. The documents will be available in the Investor Relations section of the company's website at

To participate, please dial 877-795-3638 approximately 10 minutes prior to the scheduled start of the call. If you are calling from outside of the United States, please dial 719-325-4756. The conference call will also be web cast live on the Investor Relations section of the Covanta website.

A replay of the conference call will be available from 11:30 AM (Eastern) Thursday, April 24, 2008 through midnight (Eastern) Thursday, May 1, 2008. To access the replay, please dial 888-203-1112 or 719-457-0820 and use the replay pass code: 4702233. The web cast will also be archived on

About Covanta Holding

Covanta Holding Corporation, a New York Stock Exchange listed company, is an internationally recognized owner and operator of energy-from-waste and 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 world 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 37 energy- from-waste 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 convert 15 million tons of waste into more than 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

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, 2007, 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.

SOURCE Covanta Holding Corporation

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