一个独特的高温热能油和岩石存储系统用于商业办公楼的太阳能加热和冷却系统。超过1880米（20250英尺）的槽式聚光集热器跟踪太阳的高度，并在液体温度高达L76摄氏度（350华氏度）时提供太阳能。太阳能系统为位于明尼苏达州明尼阿波利斯的8层9290平方米（100000平方英尺）办公楼提供了80%以上的年制冷能源、50%的年供暖能源和100%的生活热水。该系统于1978年11月投入使用。引文:密歇根州底特律ASHRAE学报第85卷第2部分研讨会

A unique high-temperature thermal energy oil and rock storage system is utilized for a commercial office building solar heating and cooling system. Over 1880 m (20,250 ft ) of trough-type concentrating collectors track the sun's elevation and supply solar energy at fluid temperatures up to l76C (350F). The solar system provides over 80% of the annual cooling enengy, 50% of the annual heating energy, and 100% of the domestic hot water for the eight-story 9,290 m2(100,000 ft2) office building located in Minneapolis, Minnesota. The system was dedicated and began operation in November 1978.