For the UK there is more wind in the winter, solar in the summer. Intraday anti-correlation is there, but it's more complicated: https://bmrs.elexon.co.uk/gen

For the UK there is more wind in the winter, solar in the summer. Intraday anti-correlation is there, but it's more complicated: https://bmrs.elexon.co.uk/generation-forecast-for-wind-and-solar https://bmrs.elexon.co.uk/generation-forecast-for-wind-and-s... The US picture varies a lot over the contiguous states, I think, but often, again, there is anti-correlation in general.