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Non-Tech : Alternative energy -- Ignore unavailable to you. Want to Upgrade?


To: jayhawk969 who wrote (1221)10/25/2004 5:20:51 PM
From: Snowshoe  Respond to of 16955
 
How does wind stack up on greenhouse gas emissions when the "total fuel cycle" (including manufacture of equipment, plant construction, etc.) is considered?

The claim is sometimes made that manufacturing wind turbines and building wind plants creates large emissions of carbon dioxide. This is false. Several studies have found that even when these operations are included, wind energy's CO2 emissions are quite small — on the order of 1% of coal or 2% of natural gas per unit of electricity generated. Or in other words, using wind instead of coal reduces CO2 emissions by 99%, using wind instead of gas by 98%.


awea.org



To: jayhawk969 who wrote (1221)10/25/2004 5:22:39 PM
From: Stephen O  Read Replies (1) | Respond to of 16955
 
I'm just curious. Steel is very expensive now and a lot of energy goes into smelting steel. Coking coal is up to $100 /tonne. Steel $700 a tonne, how many tonnes in one tower?