Mine don't seem to produce power at all. I put one next to a radar dish, far away from anything else and the dish didn't get power. Is there some trick to making them power things up?

I'm having the same issue.

Have not done much testing yet but where ever I have placed them the info panel says no power and same with the power grid statistics

I had the same issue, turns out even if you're using the constant output mode, you still need the Wind Speed Changing Mod as a dependency, installed this and it functions as expected.
https://mods.factorio.com/mod/WindSpeedChanging

Thanks for the info @AlexDyre. Will give it a go

Works here nicely. It would be cool if you can add the mod as dependency (not optional) to your mod!

I'm having an issue where even with "Wind Speed Changing" installed, the save needs to be reloaded for turbines to actually do anything. Wondering if anyone else can offer ideas/solutions