There are 'peaks and valleys' [=high and low periods] in electricity usage throughout the year.
He said I talk like a 'Valley girl'. And I said, “Like, whatever!”
the Shenandoah (River) 'Valley'
(..) a bit better. We start to build the dolphinarium in the autumn. First we have to complete the polar bear enclosure, the lion area and the safari valley. The elephant pavilion is first priority. The roof leaks and there's no heating in the winter. We'll solve this problem. We're looking into it. (..)1989 Dva lidi v zoo