Wind Grid

In this case, they have the same basic equipment we do, minus the batteries, but the output is actually connected to the homes circuit panel, and thereby to the rest of the utility grid. Any excess the  produces is sent back out to the grid. It is generally used up at the neighbors house, with the wind producing home getting a credit from the power company, and the nieghbor paying their usual electric bill. This reduces the amount of power the power company has to feed into the grid. So again, there really is not any specific  power infrastructure, it simply uses what is already available, our existing electrical grid. I’ll include some sites below you can check out if you want to learn more. You an also google phrases like, "wind Intertie," and, "Wind Grid," to look for other sources.