Time of Use rates are electricity prices that change throughout the day based on demand on the grid. Power is more expensive during peak hours such as late afternoon and early evening, and less expensive during off peak periods like overnight.Solar generation naturally reduces on peak usage because it produces the most energy during high cost daytime hours. When paired with battery storage, a business can shift energy use away from expensive periods to further lower its electricity bill.TOU rate structures reward businesses that actively manage when they consume electricity, and solar plus storage is one of the most effective strategies for controlling these costs.