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'
(..) I ain't exactly doing it right now, pal . You alone are the food jamming mouth, aren't you? Enough! Food! Prepare for ice age! Protect the Dodo valley! Survivals separate the Dodo off the peak! Protect the Dodo valley! Prepare for ice age! Ice age? I've heard of these cracks, buddy. (..)2002 Ice Age