CHP, or cogeneration, is not a single technology but rather a suite of technologies that can be mixed and matched in many ways to provide high-efficiency, low-emissions source of heat and power from a single process.

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Doubts over the Times' report had emerged last week when a French soccer website called Cahiers du Football pointed out that many of the details matched a spoof story it had posted more than a day earlier.

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With the Tories gripped by ideological struggle over the prospect of British membership of the single European currency, many businessmen feel more comfortable with Mr Blair's stated aim (which matched John Major's, but not that of many of his Conservative colleagues) of treating euro-membership as a practical decision to be taken on economic grounds.

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