There's a similar story for my electricity consumption, where switching off the DVD players, the stereos, the computer peripherals that were on all the time, and just switching them on when I needed them, knocked another third off my electricity bills, too.
항상 켜두던 DVD 플레이어나 스테레오, 컴퓨터 주변기기들을 끄고 사용할 때만 켰을 때 전기 요금은 삼분의 일이 줄어들었습니다.