Fusion-Solar Powered Ring World

Very high science fiction fantasy concept, derived from the existing ideas around ring worlds. This ring offers predictable season-less weather and unlimited solar power to it's inhabitants. The ring is build in the habitable zone around a very small star. The structures orbiting the star are responsible for creating a day-night cycle on the ring world.

Are the scales here 100% accurate? Likely not, but I was looking to capture a feeling more than anything. I always thought that ring worlds were a cool concept. Originally this art was supposed to be a Dyson sphere, but I find rings more striking.