Transmission Professionals Group
The Transmission Professionals special interest group covers the distribution of power from generation to final destination.
Publication
HVDC Transmission, Part 2, Major Projects
This is a two part series on HVDC Transmission. Part 1 of this series looked at specific applications where HVDC Transmission excels, other applications that may not be as suitable, and the geographic area in the U.S. Grid where they have, and will continue to be used extensively. Part 1 also looked at the technology used to implement HVDC lines.
This part will look at major HVDC Transmission projects that are currently being implemented in the U.S.
Discussions
John, the HVDC project shown in your image, PacifiCorp's Energy Gateway South, will be used to transmit coal-fired power from Wyoming to replace carbon-free energy lost from the shutdown of Diablo Canyon, and to help restore system reliability. It will be categorized as "Unspecified sources of power", a category invented in 2009 legislation (AB 62) to conceal the provenance of California's imports.
Lest anyone interpret this as a means to transfer clean energy across the country, as a big win for renewables: no. It's a triumph for Berkshire Hathaway Energy, PacifiCorp's holding company, which in 2005 recognized in the enduring naïveté of renewables advocates a means to secure profitability for decades to come, at the expense of the environment.
How San Onofre was replaced by imported "unspecified sources", aka coal-fired power, in 2012
How Diablo Canyon Units 1 & 2 will be replaced by "unspecified sources", aka coal-fired power, in 2025-2026
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