Commercial buildings typically have a "demand charge" based on your peak energy usage, plus different electric rates for on/off peak hours. Some building system

Commercial buildings typically have a "demand charge" based on your peak energy usage, plus different electric rates for on/off peak hours. Some building systems have already tackled "load shifting" to move energy demand to off hours. One common method is "cold storage" where you run chillers overnight to store a bunch of coolant or ice in tanks and use that for your air conditioning during the day.