Energy consumption off CNN models
The energy usage will vary depending on the machine, but as long as all of your results are from the same setup there's a comparatively low-tech, simple solution: Hook up your computer to an electricity meter and take some measurements with the computer "at rest", to get a baseline of its energy consumption. Then, run several trials with each model you're testing, and adjust the readings by the baseline to get the net difference in energy consumption when the model is running.