Life Cycle Assessment of a Natural Gas Combined-Cycle Power Generation System
from NETL (National Ren*w*bl* Energy Labratory), published Sept. 2000
(Yes, I added the little *'s because I understand some are offended by that word.)
http://www.nrel.gov/docs/fy00osti/27715.pdf
Okay, so finding this brought me no great "Wooooo-hoooo!" CCPG has been one of my greatest hopes for NG. That said, on page 6 of the Executive Summary is outlined the reasons for the higher lifetime costs.
"Disregarding the energy in the natural gas feedstock, 98% of the total energy is consumed in the production and distribution of natural gas. This subsystem can be further broken up into natural gas extraction, separation and dehydration, sweetening, and pipeline transport. Of these operations, the natural gas extraction and transport steps consume the most energy. Drilling requires electricity, which is supplied by diesel combustion engines; the pipeline compressors move the natural gas using a combination of grid electricity and natural gas."
Have any of those issues been resolved since this report was published, and, if so, how?
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Replies to This Discussion
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Permalink Reply by dbob on -
I think you may be missing the key here- from a lifecycle perspective, the system is outputting 40% of the energy input as useful energy.
From that same page, near the bottom:
"Although NGCC is currently the most efficient technology available for large-scale electricity production, any increases in efficiency will reduce resulting environmental stressors throughout the system."
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Permalink Reply by Hopeful About Natural Gas on -
This report is from Sept 2000. Haven't things changed a lot since then?
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To be honest, I barely understand what the heck this paper is about - and I want to. Please enlighten me. What is the significance of this report and what's it really about?
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I never thought I'd be spending my "golden years" trying to understand reports titled "Life Cycle Assessment of a Natural Gas Combined-Cycle Power Generation System". But, I am "Hopeful About Natural Gas" as a game changer. How does this report impact that vision?
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Permalink Reply by Hopeful About Natural Gas on
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Sesport, the same link you posted also had a whole section on gas fired plants. There are a bunch of applications around the US. The link below has more info (I have not read in depth on the link yet)
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Permalink Reply by Hopeful About Natural Gas on
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Low cost electricity will bring manufacturing back to this country. YEA! Electric costs are one of the primary costs manufacturers consider. I've already seen several articles about companies coming back to the old "rust belt" because of lower energy costs because of natural gas.
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