Environment & Energy

wtmusic

(39,166 posts)

14. The paper assumes each MW of power capacity will be 300m away

Mon Dec 12, 2011, 12:25 AM

Dec 2011

(on average) from a high-voltage grid connection - including those offshore:

"Based on a survey of wind power projects, we assume 0.4 km of internal cabling and 0.3 km cabling for connection to grid is required per MW wind farm capacity. Submarine cables are steel armored. Material and energy requirements are derived from manufacturer data and previous LCAs [16–19]. Because data on energy use in manufacturing of infield cables is missing, we assume equal energy per weight ratios for internal and external cables. Each wind farm is connected to a high-voltage transformer, for which material composition and direct energy inputs during manufacturing we derive from reports by manufacturers [20, 21]. The offshore transformer platform is modeled as one wind turbine foundation."

When the paper is constructed on assumptions like that, cement is the least of their problems.

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Highlight:

Wind Power Produces Just 4-14% Emissions of Fossil Fuels, Even With Manufacturing & Decommissioning [View all] jpak Dec 2011 OP

Wind power not only doesn't "replace" fossil fuels - it requires them wtmusic Dec 2011 #1

Umm - unlike nuclear power - yes? jpak Dec 2011 #2

That's pretty ridiculous FBaggins Dec 2011 #5

I posted those studies earlier this year - perhaps you missed them jpak Dec 2011 #19

I retrieved this from the carcass of DU2.... jpak Dec 2011 #20

That explains how I "missed" them... they don't support your prior post. FBaggins Dec 2011 #21

You're partly, temporarily correct... Bob Wallace Dec 2011 #4

Since you left out gamma rays from outer space and squirrel cages wtmusic Dec 2011 #10

Well... Bob Wallace Dec 2011 #15

Solar ramps up and down slowly and predictably XemaSab Dec 2011 #17

Yes, we will need storage... Bob Wallace Dec 2011 #18

Those numbers won't hold... Bob Wallace Dec 2011 #3

Higher than I would have thought Dead_Parrot Dec 2011 #6

Cement... Bob Wallace Dec 2011 #7

Yeah, approximately double Jacobson's estimates. joshcryer Dec 2011 #8

Weird, it's not like Jacobson got his figures straight from the AWEA- Dead_Parrot Dec 2011 #9

Well, Jacobson lists a few pages... Bob Wallace Dec 2011 #11

Just yanking chains to see what happens :) Dead_Parrot Dec 2011 #13

DTM XemaSab Dec 2011 #16

I already closed the PDF to compare, I think they're in the same range. joshcryer Dec 2011 #12

The paper assumes each MW of power capacity will be 300m away wtmusic Dec 2011 #14