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Transmission lines and storage.

There are multiple 2500km transmission lines in use today. They are relatively cheap to build and solve almost all the intermitency issues.

China has a few over 3000km long already, eg: https://spectrum.ieee.org/energywise/energy/the-smarter-grid... and there is a 4500km long line planned for Australia to Singapore: https://en.wikipedia.org/wiki/Australia%E2%80%93ASEAN_Power_...




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