Over the years, there has been increasing customer complaints on Bill Shock due to extremely high estimated billing. These high bills have led to an increase in unrecoverable accounts receivables for the Electricity Distribution Companies. Whilst all customers cannot be metered at the same time, the automation of an appropriate Estimated Billing Methodology may provide the transparency and comfort that the industry needs to ensure that customers are not being taken for granted. Billing must be seen holistically as a service with the aim of improving and assuring revenue. This means that the distribution companies must be able to bill efficiently and timely for all the energy distributed; the DISCO must also be able to effectively collect money for all the energy it has billed. This therefore means that the most effective and efficient Billing Lifecycle Process must include the automation of Energy Audit through to Dunning & Delinquency Management.