They off-loaded a bunch of blades from a ship to a dock in Muskegon, Michigan. They were installed up north. Renewable energy is great, but nobody who supports it is willing to put one of those monsters in their view or backyard. From all I know converting sunlight to electricity is the way to go. However, efficiency was (last time I checked) under 15%. With a space race-like focus we could improve efficiency to get more power from smaller grids. Excess elctricity during the day can heat salt pits that then drive steam generators at night for electricity when the sun doesn't shine. An at-site generator would be used in case of system failure or extended bad weather. No hurry though at last count we have about 100 years of fossil fuel left and most of the world has yet to be checked for oil reserves.
what about mechanical storage?
consider a grand father clock
weights going up and down??
I read where they are looking at filling caverns with compressed air during the day and driving wind turbines with it at night. In Ludington, north of where I live they fill a huge man made lake with water at night and then let gravity take it through turbines during daytime peak demand. They kill a lot of game fish though especially the yellow perch considered a delicacy. Using excess energy to push railroad cars filled with rocks during the day up a mountain and then let gravity bring them down while turning car mounted turbine would be mechanical and like the clock you mention. They can also use the tide with locks to trap water to drive turbines.