Energy Savings and Easy Brewing Not only does the ENA 5 offer the incomparable flavor of high-pressure-brewed crema coffee and espresso-based drinks, it has also been cited for its features for saving energy. Unlike many countertop appliances, the ENA draws no energy whatsoever when the machine is off but still plugged in. The patent-pending Smart Zero Energy Button lets the machine finish any beverage already in progress and then completely disconnects from the electrical outlet. For additional energy savings, the machine can be switched to Energy Save Standby Mode reducing power consumption up to 40 percent. Brewing is easy with the rotary dial with a built-in push button on the top of the machine. Programming the ENA is simple and intuitive, with the text display as a guide. The multi-color clear text display features easy-to-read alphanumeric text. The background is green when the machine is coffee-ready, red when action is required, and yellow in programming mode.