Again quoting from the EIS Summary, S.5.3.4.2 Underground HVDC Transmission Line, During public scoping, some commenters suggested that the transmission line be installed underground for either the entire length or for discrete segments to minimize visual impacts associated with construction and operations and maintenance. To date, underground cable technology is not commercially available at the very high voltage and capacity levels (i.e., +/- 600kV and 3,500-4,000MW) planned for the Project. (page S-42) and because of that this is what DoE stated Based on this analysis, DOE concluded that undergrounding all or portions of the Project is not a reasonable alternative and has eliminated it from further analysis. (page S-43) This technology IS available see page 2 of this from Prysmian Group. prysmiangroup/en/business_markets/markets/hv-and-submarine/downloads/datasheets/HVDC_A4_LOW.pdf For bulk power transmissions, mass impregnated cables still prove to be the most suitable solution because of their capacity to work up to 600kV. Folks were being spoon-fed garbage from both Clean Line and the DoE.
Posted on: Sun, 11 Jan 2015 19:40:57 +0000
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