Energy Manager Today, Jan. 10, 2017, by Carl Weinschenk.
http://www.energymanagertoday.com/iot-opens-new-opportunities-energy-efficient-buildings-0129646/

"The great potential for the Internet of Things (IoT) to improve energy efficiency in buildings was illustrated during the past week by an introduction and an investment. The problem addressed by the introduction is that the IoT is being deployed before interoperability and other standards and protocols are fully developed and in place. This means that the system – which even under the best of conditions will be monstrously complex and sophisticated – could devolve into islands of disconnected functionality. In such a future, the IoT would be of limited use – and may even be an overall detriment."