N5 - 電気でんき
electricity, electric light
N5 - 電車でんしゃ
electric train
N4 - 電灯でんとう
electric light
N2 - 乾電池かんでんち
dry cell, battery
N2 - 停電ていでん
failure of electricity
N2 - 電柱でんちゅう
telephone pole, telegraph pole, lightpole
N2 - 電波でんぱ
electro-magnetic wave
N2 - 電流でんりゅう
electric current
N2 - 電力でんりょく
electric power
N2 - 発電はつでん
generation (e.g. power)
N1 - 電源でんげん
source of electricity, power (button on TV etc.)