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 strong alliance " " And the world's most awesome band " " To find your fame and fortune " " Through the valley you must walk " " You will face your inner demons " " Now go, my son, and rock! " " So he bailed from fucking Kickapoo " (..)2006 Tenacious D in the Pick of Destiny