This project envisages customization and implementation for a comprehensive CRM, Billing and Debt Management solution, catering to all the categories of customers. mPower™ including Energy Audit module has been implemented centrally at KESCO IT Center in an online environment. Initially, the categories for which billing in done through hand held for one branch were taken, and it was extended for all the categories where manual billing is done. Customer Information Portal where consumer can give complaint, know their billed tariff (www.kesco.co.in) was also developed. Successfully completed software User Acceptance Test (UAT) despite many challenges like clustering the environment, making it online while adhering to the stringent time lines while taking every care to maintain the security of the entire system.