White Lights?

No.4

I walk along the sea front in the evenings with Cosmo regularly. When it’s dark I can always see that there is always a line of white lights on the horizon?

The red lights are obviously on the turbines. Are they boats or ships on the horizon? Well er no because they are too regularly placed, and they are always there?

Then one late afternoon I realized the answer to the puzzle which was getting a little tedious because I kept on wondering about it. I took this picture from the Little Blue Hut and it all fell into place! 

Not all the turbines have red lights on the top. But they do all have white lights at the bottom. I had expected them all to have red lights on top?