noun
gas bill; gas utility charge
Refers to the cost of natural gas or propane used for cooking, heating, or hot water.
今月のガス代が高かった。
This month's gas bill was expensive.
noun
gasoline bill; petrol bill
Colloquial use for the cost of gasoline/petrol for a vehicle. Often used in casual conversation.
See also: ガソリン代
車で旅行するとガス代がかかる。
Traveling by car costs money for gas.