Adds a range of different power producing options
Mods introducing new content into the game.
Changes to power production and distribution.
I've not once seen them produce the advertised max. What stops it? Wind never actually gets strong enough? (Undocumented) Spacing issues (that is, they're too close)?
It just varies over time. Sometimes you go a long time getting very little. Spacing has nothing to do with it. They are exceedingly simple.