The document provides information about the Calcutta Electric Supply Corporation (CESC). CESC is the sole electricity distribution company serving the Kolkata municipal corporation and surrounding areas. It was established in 1897 and serves over 3 million consumers. The document discusses CESC's history, financial performance from 2016-2017 which showed increases in revenue and profits, competitive analysis showing its assets and performance compared to other companies, and technologies being adopted like smart grids and power cable technologies.