The mill?

At the mill.

Why the mill?

When the wind is blowing, any excess energy coming from the windmill is diverted into the battery.

and the doors shall be shut in the street when the sound of the grinding is low, and one shall rise up at the voice of a bird, and all the daughters of music shall be brought low

And the doors shall be shut in the streets, when the sound of the grinding is low, and he shall rise up at the voice of the bird, and all the daughters of musick shall be brought low