Brief History of Submetering
Utility submetering has its roots in Denmark. In 1902 two Danish brothers, Axel and Odin Clorius, established Clorius Controls. Their objective was to develop temperature and pressure control devices. In 1924 Clorius received its first patent for a heat cost allocator. The device was designed to measure energy usage in apartments built with a common boiler heating system. The device was attached to each radiator in an apartment unit. By measuring energy usage at each ra