I suppose there could be one, but I don’t know of any smart lightbulbs that have an energy monitoring feature. Most of these devices draw under 10 W at maximum anyway, so the energy cost of observing and reporting energy use would probably cost more than any potential savings.
For example, there aren’t even any clusters for Zigbee lightbulbs to report energy use.
You can tell if the bulb is on or off, and in many cases you can get the brightness level setting, but not the actual energy draw.
In contrast, there are quite a few smart plugs and a few smart switches that can report energy draw. So in those cases, your example would apply: if the DTH/edge driver exposes the energy draw values, you would be able to access them.
So it comes down to the specific use case, but for most bulbs you would just use “on” as a proxy for the maximum draw.