Ecorithm uses big data analytics to help optimize the efficiency of large commercial building HVAC systems. They define big data as datasets too large to analyze with traditional techniques. Ecorithm collects over 100 million data points per month from a single medium office tower to identify inefficiencies. Their software cuts through noise in the data to provide simple answers and insights. Initial analysis typically finds 10% electricity savings, and ongoing monitoring maintains savings and discovers new opportunities beyond the initial fixes. Ecorithm works with some of the largest building owners and their software is expanding to major real estate markets.