About notional and metered energy

The Energy dashboard can show both notional and metered energy. Because both methods are quite different, it’s very well possible to use them alongside each other and even complementary to each other.

Notional energy gives a theoretical, indicative value calculated from the given installed power of all light points controlled by the system and their behavior (switching, dimming). It’s possible to divide between the energy consumption per logical or physical channel, showing high granularity and keeping track of notional burning hours of the light points. As notional energy is a calculated value, it even allows to predict energy consumption of scenes and schedules that are intended for use.

Metered energy gives an absolute number based on physically metering the energy consumption per electrical circuit (power group). As you can add electricity meters in virtually all circuits, you can also monitor the energy consumption of circuits beyond lighting, for example refrigerators or HVAC.

The numbers in both notional and metered energy are derived in completely different ways, which makes it highly unlikely that you can compare both numbers.