Nuon E-manager Your energy consumption can now be monitored with the Nuon E-manager. With the Nuon E-manager you can monitor your energy usage on your smart phone real-time. The Nuon E-manager immediately shows how much energy (and money) you are saving or consuming when the coffee pot, television or printer completely are not in use. You Can use the Nuon E-manager to compare your energy usage with previous periods, and with similar households. Use the Nuon E-manager to control your energy consumption. NOTE: To use the Nuon E-manager app, you will require a Nuon E-Manager Gateway, a meter reader and an active account.