These systems can turn electricity into ice in off-peak hours, and use the ice to generate cold air, so there is no need to compete with others for electricity during peak hours. Taipower offers discounted rates to those who install ice storage central air conditioning.
儲冰式冷氣可以在晚上把電力轉換成冰，白天就利用冰槽發電，不須與人爭用尖峰時間的電力，台電則在電價上優惠裝設儲冰式冷氣的用戶。