I've been conducting a small-scale study on energy saving powerstrips. I've found that a typical work station will consume 25% - 45% less energy if the equipment is connected to an occupancy sensing powerstrip. Basically, the powerstrip has a motion sensor connected to a timer. When a worker leaves all peripheral equipment is turned completely off. When the employee returns, all peripherals are up and running by the time the employee has returned to her seat and is ready to work.