You use ~ to describe something that happens or that is used at times when there is least demand for it. Prices at ~ times are often lower than at other times.
The price for indoor courts is ?10 per hour at peak times and ?7 per hour at ~ times.
...~ electricity.
? peak
ADJ: ADJ n
•
Off-peak is also an adverb.
Each tape lasts three minutes and costs 36p per minute ~ and 48p at all other times.
ADV: ADV after v