The Qualistars can measure energy (Wh, varh, VAh, VADh). This mode displays all the values linked to power and energy. These measurements are simple to access: to start and stop summing of the energy values, simply press the "start" and "stop" keys.

To perform an energy survey, audit and analysis, the Qualistar+ recording mode allows users to calculate the energies consumed and produced. Continuous measurements and periodic checks with the Qualistar+ help to ensure the long-term effects of the action taken.

Another major advantage is that the Qualistar+ models offer a wide variety of units: kWh, Joule, nuclear toe, non-nuclear toe, BTU…