International Journal of Business and Social Science Vol. 3 No. 19; October 2012 16 Time Series Analysis of Electricity Meter Supply in Ghana David Asamoah, Jonathan Annan Department of Information and Decision Sciences Kwame Nkrumah University of Science and Technology Kumasi-Ghana. Yarhands Dissou Arthur Department of Computer Science Christian Service University College Kumasi-Ghana. Abstract Electricity demand is measured by the metered final consumption of end users.Therefore to supply power to consumers, electricity meter become a primary driver for measuring the amount of energy consumed by either industries, small and medium scale enterprises and homes.Due to the continuous demand for meters by client of the electricity company of Ghana and the company’s inability to respond promptly with their demand there is therefore the need to model the supply of meters to estimate the monthly quantities needed to supply by the company to meet demand of their consumers. Little studies on meter supply and demand forecast have been carried out in order to develop the method to estimate the meter supply in Ghana. In this paper,Box Jenkins methodology is applied to total meter supply data from the Electricity Company of Ghana. On seasonal autoregressive integrated moving average ARIMA(1, 1,0) is tentatively used to model the data. Ljung-Box statistic is used in diagnostic checking and it is shown that the model is adequate. Keywords: Meter supply, time series, Box-Jenkins method Introduction Electricity meter is a primary driver for measuring the amount of energy consumed by either industries, small and medium scale enterprises and homes. It is an integral part ofproduction and has effectively become ‘essential’ to the energymarket such that it cannot be under estimated. Virtually all forms of current industrial, manufacturing, and service activity require electricity to operate hence the need of meter to check their monthly consumptions and their associated cost. Although, some firms and individuals can and do function without it, it is impossible to compete meaningfully in today’s global economy without access to cheap and reliable electric power. Hence the readily need for metering. The meters fall into two categories, electromechanical and electronic. But the next section will concentrate on prepayment metering Prepayment Metering Prepayment metering is a payment method where the consumer credits a special meter installed at the house, before the electricity is consumed. Prepayment metering is used by utility companies to provide service in instances where the consumer is considered a credit risk, or the consumer requests this method of payment (Speak, 2000). Payment meters can be used to collect payment of debt while continuing the supply of electricity (Electricity of Commission, 2007) and are often portrayed by retailers and are often portrayed by retailers and perceived by consumers as a useful budgeting tool (Boardman and Fawlett, 2002). Coutard and Guy (2007) argue that the advantages of prepayment metering, and the appreciation that prepayment meter users have for them are often overlooked. Prepayment metering increases awareness of energy use, and a recent review of 12 pilot studies that investigate the effect of in home displays showing electricity use on consumer behavior found that the direct feedback provided encourages energy conservation (Faruqui et al., 2010).