ピーク時

ピークじ【ピーク時】

(a) peak time.

●ピーク時に(は) at the [sth's] peak; during peak periods [hours].

●ピーク時の peak-time

・ピーク時の電力消費量 electricity [energy] consumption [usage] during peak (time) periods; (on-)peak electricity [energy] usage; peak-time electricity [energy] consumption.