Reengen is a high-tech company established in 2013. Reengen’s Energy IoT Platform is a cloud based PaaS data analytics solution for commercial buildings, industrial facilities and renewable energy plants. Already collecting data from thousands of buildings in 5 different countries, the data science-centric IoT Platform employs machine learning algorithms and big data analytics in order to provide energy saving, operational efficiency, energy procurement optimization and predictive maintenance for its customers. The IoT stack includes connectivity, device cloud, business logic, big data analytics and remote service applications. Through universal connectivity, the Energy IoT Platform strengthens critical power infrastructure, provides demand side management and prevent abnormal energy system operations while helping businesses become more productive and energy efficient. Advanced rule engine, intuitive web dashboards and mobile app makes it more practical to transform facility and plant operations data into performance improvements that save money, enhance sustainability, and drive employee productivity.