In fire protection systems with fluctuating demand, such as those serving mixed-use developments, fire pumps must be capable of adjusting their output to match the varying needs. This might involve using variable frequency drives (VFDs) that allow the pump to operate at different speeds depending on the current demand, ensuring efficient operation while maintaining the necessary pressure. Properly managing these fluctuations is critical to prevent both under-pressurization during high demand and energy waste during low demand.