Systems and methods for limiting inrush current spikes in multi-load systems are disclosed. Inrush current limiting modules according to some embodiments comprise programmable microcontrollers and logic activated switches that connect loads to main power in a staggered and non-simultaneous manner thereby limiting inrush current spikes. Applications include agricultural grow systems employing multiple grow light fixtures and other high power and multiple load systems. Programmable logic controlled switching mechanisms operating under reserve power and integrated into power supplies are also disclosed.
