The lights were on about a minute before I took this shot, but I suppose they have an auto shutoff feature that kicks in at a certain luminosity value. This particular pier is one of the "greenest" in the world, using solar power, wind turbines and other environmentally-friendly features.
A great sunrise shot. Good for you for getting up early. I spend 2 or 3 weeks every summer in our boat and I have no trouble inventing excuses for not getting up early. One of them is that in the north you'd have to get up very early to see the sunrise. I guess that's why I take most of my sunrise shots in the winter.