Implications of intercontinental renewable electricity trade for energy systems and emissions (nature.com)

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We find that renewable electricity trade across large world regions via the underlying UHVDC interconnection can boost renewable electricity production and reduce 2020–2100 cumulative CO2 emissions from the power sector up to 9.8%. Financial investments in the UHVDC lines are offset in the long term by reduced investments in other electricity-generation options, including nuclear and storage. Finally, we find that renewable electricity trade can substantially reduce air pollutant emissions in importing regions.

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How Much HVDC Transmission Is There Now, Coming, & Where? (CleanTechnica)

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The World Grid and New Geographies of Cooperation