Abstract: Various embodiments described herein relate to a self-contained, self-regulating intelligent automated window treatment with increased energy efficiency. In at least one embodiment, the window treatment consists of: (1) a headrail; (2) a tube located within the headrail; (3) a motor located within the headrail, preferably within the tube; (4) window treatment fabric with one terminus of the fabric affixed to the tube within the headrail, and with the fabric extending from the tube and out from the headrail; (5) a smart bottom rail attached to the terminus of the shade fabric furthest from the tube with the bottom rail containing, at least one sensor, at least one control button, and a battery that provides power to the sensor(s) and control button(s), and wherein the smart bottom rail communicates with the motor in the headrail. Types of sensors used may include environmental sensors, motion sensors, and inertial sensors.