Very sweet shot, Jon. That Fuji doesn't do too poorly at 1600 ISO. I do tend to use Perspective Warp as Scott mentioned. Squaring things up can sometimes take a nice image and make it a little nicer. You should consider trying it. Although, it may just appeal to occasional obsessive types like Scott and me. Congrats on the ribbon and terrific image.
Very nice photo. Fine detail. I could go on about how I might have used a skew or perspective adjustment to square off the structure and power lines, to provide a great horizontal framing element in addition to straightening the turbine, making it more defiant. As it is I find myself falling in to the right and it's ever so slightly distracting. This image is so clean and technically precise otherwise that this is somehow noticeable to me. I could go on like that, but it'd be a waste of time, as this is a great image that doesn't need a silly, fake adjustment like this, and I expect it to do very well.
I love the idea of shooting this at night to get the blades as a circle instead of just individual blades. I also really like the stars and that the whole images is exposed well.