The electric kitchen chimney consumes electricity. The power consumption of the chimney depends on how advanced the technology is and what built-in features are equipped within it. Additionally, it depends on how long you use it for. The average consumption of kitchen chimneys is around 100 to 150 Watts. Besides it, if your chimney has an auto-clean feature, then power consumption for the same would be about 120 to 200 Watts.