When building a new deck, you can lay polyvinyl chloride pipes through the area before installing the paving so you can run wires easily for lighting. But if it’s too late for that, you can hide wiring by attaching it to the underside of structures.
You can install perimeter low-voltage lighting at any time. And where the space gets at least six hours of sun, consider installing solar fixtures. They don’t require any wires at all.
DOWNLIGHTING: Downlighting casts a soft, indirect glow on horizontal surfaces such as steps, paths, floors, balconies, and tabletops. Mount the fixtures on tree trunks, branches, or overhead rafters. On arbor rafters, thread wires through the center of hollow columns, or cut a rabbeted groove along the length of a solid post to create a cavity for the wiring.
Keep downlighting fixtures out of sight so that they don’t draw attention from the illuminated object. As with other lights, aim them to illuminate your yard and outdoor rooms, not your neighbor’s.
PATH LIGHTING: These short, decorative fixtures cast light downward along a walkway, linking your outdoor room and other parts of your yard, such as the driveway, parking area, or pool. Use a single or matched pair of path lights to illuminate short flights of exterior steps or to mark points of entry.