It doesn't reduce the capital cost of transmission lines: you still need thick enough wire to power everyone's house when the wind isn't blowing. If you're tal

It doesn't reduce the capital cost of transmission lines: you still need thick enough wire to power everyone's house when the wind isn't blowing. If you're talking about the power loss in wires, it's only a few percent. Losses may be higher with power generated at the leaf nodes, because when my house is idle during the day it has to send power into the grid through the relatively inefficient local network while a wind farm is plugged right into the grid.