An information handling system may include at least one information handling resource and a power management subsystem configured to: receive signals from a plurality of power supply units, each signal indicative of an environmental parameter associated with a respective power supply of the plurality of power supply units; determine, for each of the plurality of power supply units, a respective environmental effective power capacity based on the respective signal indicative of the environmental parameter for such power supply unit and an environmental profile for such power supply unit; and manage power consumption of the at least one information handling resource based on environmental effective power capacities of the plurality of power supply units.