By 2030, with HVDC lines meeting at 32 nodes between regional grids, the United States could add enough wind and solar power to cut power sector emissions by up to 80% from 1990 levels researchers find.

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By 2030, with HVDC lines meeting at 32 nodes between regional grids, the United States could add enough wind and solar power to cut power sector emissions by up to 80% from 1990 levels researchers find.