The document analyzes and compares the branding strategies of three major Indian energy companies - Indian Oil Corporation (IOCL), GAIL, and Bharat Heavy Electricals Limited (BHEL). It summarizes the business activities and branding elements of each company including their logos, slogans, and websites. It also analyzes sample advertisements of GAIL and BHEL, noting their messages and target markets. The document observes that while IOCL and GAIL focus on corporate branding through advertisements emphasizing business portfolio and CSR activities, BHEL's advertisements have shifted from product-based to highlighting its 50-year history and multi-disciplinary engineering approach.