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 love a good profit chart. - Me, too. Yeah! The peaks are when Tulip is on vacation, asleep or out with the flu. The valleys are when she tries to help. Cool. I will liberate her. Consider her liberated. And if she doesn't want to be liberated? Fire her. I'm talking about firing her. Really? (..)2016 Storks