The book "Vegetable Oil based Bio-lubricants and Transformer Fluids" offers a comprehensive analysis of bio-based lubricants derived from vegetable oils and their application in energy distribution. It highlights the advantages of vegetable oil lubricants compared to petroleum-based alternatives, including biodegradability, cost-effectiveness, renewability, and lower environmental impact. The author, Dhorali Gnanasekaran, presents a detailed literature review on modified vegetable oils and examines their physical and chemical properties as well as their influence on tribological applications. Additionally, it addresses the additives and improvements necessary to utilize vegetable oils as lubricants and transformer oils in power plants and distribution networks. This book is aimed at researchers, professionals, as well as decision-makers and standardization bodies.