Electricity
Light
noun
Electricity energy is just a fancy way to say electricity.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
電気を点けて下さい。
Please turn the light on.
会社の電気が明るい時は、スタッフが出社しているサインです。
When the lights are on, it's a sign that staff are in the office.
冬は、電気のストーブを用います。
In winter, we use an electric heater.