How energy efficient is the HP LaserJet Pro P1102w compared to competitors?

The HP LaserJet Pro P1102w consumes 36.5 kWh annually, making it one of the most energy-efficient laser printers in its category. For comparison, the Brother HL 2270DW consumes 73.1 kWh and the Samsung ML 1675 consumes 47.0 kWh annually. It also features HP Auto-On/Auto-Off Technology that senses printing activity and turns on and off automatically. (Pages 1-2)