Delivery of power to one or more servers is controlled by energizing a control circuit and transmitting, from the control circuit to a first power source, a first signal indicating that the control circuit is energized. After transmitting the first signal indicating that the control circuit is energized, the control circuit receives a second signal indicating that the first power source is ready to provide power. The control circuit also receives, from a server, a third signal indicating that the server is energized. Having received the second signal indicating that the first power source is ready to provide power and the third signal indicating that the server is energized, the control circuit transmit to the server a fourth signal indicating that the server may start receiving power from the first power source.