E-Cube Energy is a company that provides energy efficiency data analytics and management systems. It started working in carbon markets in 2009-2011 and then managed over a dozen designated consumers under India's PAT energy efficiency scheme from 2012-2015. Since 2014, it has focused on creating niche solutions in energy efficiency data analytics. It has developed algorithms and software tools to assess equipment performance, analyze meter data, and benchmark sectors such as textiles and foundries. Notable projects include developing a central energy efficiency data repository for the textile sector in Bangladesh and providing data analytics support for India's PAT compliance scheme.