Yours are good and I like the idea of overlaying the grid like from a pv panel, BUT I think the grid lines and also the alternating dark/light blue rays of the sun both distract from the focus. Perhaps a simpler design and brighten the colors a little.
Thank you very much for your feedbacks. I'm really really sorry about my latest submissions...I've just read your comments in my comments box. So I don't know yet about the grid lines and the colors corrections. And I'll try to make revisions on my next submission. Thanks.