The Wattcher is part of the ‘green program’ of the Dutch energy distributor ‘Eneco’ and

enhances awareness of the consumer’s energy consumption.

To achieve this, overall power consumption is measured at the central electricity meter by battery-powered opto-electronics, leaving the electricity meter unmodified.

The data are wirelessly transported and visualized on an ‘intelligent design display’ that can be plugged directly into a mains outlet. The display shows the power consumption as a numerical value in Watts, while its intensity is modulated with a ‘heartbeat’, giving an intuitive indication of energy consumption. The Wattcher itself uses less than 1 Watt of power.