Let me start out by saying this: Normally... I hate HDR photography. It can be an amazing tool, but so many people will use HDR as an excuse for poor exposure and camera work (which is really sad considering the raw format allows you to fix almost everything about an exposure these days.
That being said, I like this. The colors really evoke a sens of depth and life. So often, sunsets are bled out and dreary, but the HDR on this really drives the power of the moment home.
I know I push for it often, but remember the rule of thirds (or the golden mean). This is a good photo, but from a tech standpoint, my eye isn't sure where to rest. Is the focus the sunset, or is it the structure. The structure is close enough to the mean that it pulls the eye, but if it was right in the sweet spot, I believe that the image would have a lot of power.