| 摘要 |
A method of monitoring energy usage in a lighting system controlled by at least one lighting controller 2 arranged to control a plurality of lighting devices 3. Comprising: measuring the electrical power drawn by the lighting controller 2 for distribution to the plurality of lighting devices 3, receiving from the lighting controller 2 information indicative of the status of each lighting device, and calculating an energy usage value for each lighting device based on the measured electrical power and the status of the lighting device. The method has the advantage that the energy consumption of individual lighting devices 3 can be determined using a single energy measurement device.
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