I definitely prefer your first shot of the solar panels and think it meets all the requirements of DEDPXL's contest. When looking at their site, I find your first photo best meets the criteria of their definition of
rhythm. I will admit it is the first time I've ever heard the term
rhythm being applied to photography.
Since you are a musician, you are a natural when it comes to identifying rhythm!

Good luck with the contest! Please let us know if you win or place in the contest!
"Naturals" come in many sizes and shapes, and not where you'd always expect them. Let's just say that you should never confuse someone with an instrument in their hands as someone who knows rhythm until they can prove it to you. LOL
What I like about the DEDPXL thing is that it's not a contest, and there are no winners. Zack and his wife go through the photos at the end of the assignment, pick a subset of them and then grade them on their own scale against the criteria specified in the assignment...
A = DAMN! Excellent execution of the assignment theme as well as the image being executed very well technically.
B = Nice. Well seen and nicely done. Slightly above average.
C = Met the minimum requirements for the assignment. This could also be called the “Meh” grade. It’s ok. It’s not bad but it’s not great either. Yes… you met the assignment but the photograph doesn’t go further than that. Could have investigated the subject better, waited for better light, found a better composition, done something different with your post production, etc.
D = Ugh. You have some element of the assignment in your photograph but it was so poorly executed that it’s a rather boring photograph. These photos seem like very little, if any, thought was put into making the photograph. These photos have poor composition, light, post production, subject material, etc.
F = FAIL. EXIF or upload data shows that you pulled images from your archive and placed them into this group that is reserved for NEW work. You won’t become a better photographer looking through your old work. The point of these assignments is to get off your ass and shoot new stuff. You can also get an F if we feel the image didn’t meet the assignment criteria or it was so poorly shot that it doesn’t even deserve a D. Did you not have your camera set to the proper date? Too bad!
After sitting through the 90 minutes of them going through assignment one I believe I have a good idea of what he likes, as do a lot of other photographers, and you can see it in the submissions for assignment two. A's are rather hard to come by, even with what I'd consider a wonderful photograph, and that's probably the way it should be. I'm not sure that either of these are worthy of, "Damn!!", and that's OK, because as fond as I've become of them I also know that they're still a compromise of what I wanted to take. With the hundreds of photos that get submitted through Flickr, 500px, Instagram and Google+, I am just hoping to get a critique. I love the more abstract nature of the B&W, and I think it has more potential for a "Damn!!" on first sight compositionally, while the color photo may have greater impact if they're weeding through hundreds of B&W images. I find the color image mildly reminiscent of the old Windows background image of the rolling hill and blue sky - like a high tech version of that shot. LOL
Even if someone has no desire to participate in the assignments, I think that watching the assignment video and then the critiques can be very informative, particularly as you recognize what could have been your photographs in the first assignment. I've learned that I've taken an awful lot of "C" shots in my day, and within their comments is a wealth of information about what the photographer
could have done as they shot in that location. How they could have explored the scene a little more to take it from a snapshot to a photograph. Made me realize that some days I'm just lazy and I grab something OK, but don't work for the best possible shot.