It is the device type that makes the magic happen. I just published in the forums a device type for the [Aeon Labs Smart Energy Switch DSC06][1]. For the DSC06, the switch itself can send a report on a timer and/or when the power consumption (in watts, not kWh) changes by some amount. With the correct device type (really the correct device configuration), like @bmmiller stated, you do not have to use Pollster to poll the device.
[1]: Aeon Labs Smart Energy Switch DSC06