Heavy industry, which is a prodigious user of electricity, is no longer playing the role it once did, and light manufacturing and the services sector, which use much less power, are on the rise.

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Whether imposed on oil or gasoline or electricity or on all carbon fuels, such a user fee would amount to pennies on the gallon for consumers.

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It says the world's installed wind capacity at the end of 2002 was 31, 128 megawatts, with Denmark the leading user, generating 20 percent of its electricity from the wind.

CNN: story.codringtonwindfarm.jpg

"As a large and rapidly growing energy user, Apple cannot be a sustainability leader if it remains a passive recipient of the electricity it is provided from dirty utilities, " the Greenpeace report says (PDF).

CNN: Apple's green image continues to be dirtied

User fees are charges for items like postage stamps, Medicare premiums, veterans' life insurance policies and electricity rates for power supplied by federal agencies such as the Tennessee Valley Authority.

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User fees are charges for items like postage stamps, Medicare premiums, veterans' life insurance policies and electricity rates for power supplied by federal agencies such as the Tennessee Valley Authority (nyse: TVC - news - people ).

FORBES: Fanning The Fees