News Release

NYMEX to Launch U.S. Carbon Allowance Contract as Part of The Green Exchange Venture

Wed May 07 2008

NEW YORK, May 7 /PRNewswire-FirstCall/ -- The New York Mercantile Exchange, Inc., a subsidiary of NYMEX Holdings, Inc. (NYSE: NMX), today announced that it will introduce a U.S. Regional Greenhouse Gas Initiative (RGGI) carbon allowance futures contract, in the third quarter of 2008, pending regulatory review.

The contract will be available via the CME Globex® electronic trading platform and NYMEX ClearPort® clearing. When launched, this is expected to be the first exchange-traded contract for compliance with a government cap-and-trade program in the U.S.

The Green Exchange venture will offer a comprehensive range of environmental futures, options and swap contracts for markets focused on solutions to climate change, renewable energy and other environmental challenges. The first slate of environmental futures and options contracts were introduced on the NYMEX, the world's largest physical commodities exchange, on March 17.

Additional information the contracts and fees can be found at http://www.greenfutures.com/.

About The Green Exchange

The Green Exchange initiative was introduced by NYMEX Holdings, Inc. (NYSE: NMX) in December 2007, with Evolution Markets, Morgan Stanley, Credit Suisse, JPMorgan, Merrill Lynch, Goldman Sachs, Tudor Investment, Constellation Energy, Vitol SA, ICAP, and RNK Capital. The new exchange will offer a comprehensive range of environmental futures, options and swap contracts for markets focused on solutions to climate change, renewable energy and other environmental challenges. For further information about The Green Exchange, please visit http://www.greenfutures.com/.

Forward Looking and Cautionary Statements

This press release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act, with respect to our future performance, operating results, strategy, and other future events. Such statements generally include words such as could, can, anticipate, believe, expect, seek, pursue, and similar words and terms, in connection with any discussion of future results. Forward-looking statements involve a number of assumptions, risks, and uncertainties, any of which may cause actual results to differ materially from the anticipated, estimated, or projected results referenced in forward-looking statements. In particular, the forward-looking statements of NYMEX Holdings, Inc., and its subsidiaries are subject to the following risks and uncertainties: the success and timing of new futures contracts and products; changes in political, economic, or industry conditions; the unfavorable resolution of material legal proceedings; the impact and timing of technological changes and the adequacy of intellectual property protection; the impact of legislative and regulatory actions, including without limitation, actions by the Commodity Futures Trading Commission; and terrorist activities and international hostilities, which may affect the general economy as well as oil and other commodity markets. We assume no obligation to update or supplement our forward-looking statements.

SOURCE: NYMEX Holdings, Inc.

CONTACT: Anu Ahluwalia, +1-212-299-2439 or Keil Decker, +1-212-299-2209,
both of NYMEX Holdings, Inc.; or Evan A. Ard of Evolution Markets,
+1-914-323-0210, eard@evomarkets.com, for NYMEX Holdings, Inc.

Web site: http://www.nymex.com/
http://www.greenfutures.com/

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