A maximum of 60% of the winds power can be extracted from wind (Bet'z law [1]) and modern turbines are only capable of catching 80% of that. There's lots of research in optimal spacing.
I read that a rule of thumb was 4-5 diameter widths between turbines at right angles to prevailing wind and then 7 diameter widths between rows facing the wind
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A maximum of 60% of the winds power can be extracted from wind (Bet'z law [1]) and modern turbines are only capable of catching 80% of that. There's lots of research in optimal spacing.
I read that a rule of thumb was 4-5 diameter widths between turbines at right angles to prevailing wind and then 7 diameter widths between rows facing the wind
[1] https://en.wikipedia.org/wiki/Betz%27s_law