Introduction
1.1 Background to the Study
The growth, prosperity and national security of any country are critically dependent upon the adequacy of its electricity supply industry. Indeed, the link between electricity supply and economic growth is such that electric energy generation is not only a major and increasing source of energy; it is also for us a growth industry as well as ‘entirely new industry ’ (Okongwu,1986). Energy is a required input for production and consumption activities, making it indispensable source of economic growth. Nigeria is no exception. It is instructive to note that, electric power is vital for economic growth and quality of life not only because it fosters the productivity of capital, labour and other factors of production, but also that increased consumption of energy, particularly commercial energy like electricity signifies high economic status of a country (Adebola, 2011), These facts have attracted researchers to investigate the role of electricity in different countries.
However, Classical economists did not recognize electric energy as a factor of production and neither did the Neoclassical. Today, economists like Alam (2006) as cited in Adebola (2011) finds out in his work on ‘Economic Growth with Energy’ that not only does energy serve as a factor of production; it also acts as a booster to growth of a nation. Thus, there is a departure from classical and neoclassical economics’ factors of production which include only capital, labour and technology to now include energy as a factor of production. It may be noted that electricity has effects not only on factors of production but also on the impact it hason capital accumulation. In literature, the relationships between electricity consumption and economic growth are well documented. However, debate regarding the causal relationship between electricity consumption and economic growth has attracted increasing attention in recent years. Emeka (2010) posits that the thrust of this debate has been whether electricity consumption causes economic growth or whether it is the economic growth that leads to electricity consumption. These causality issues, therefore, suggest the need to carry out further investigations.
Indeed, most studies linking electricity consumption to economic growth were conducted utilizing causality test for multi-country but fewer studies that establish the relationship between the two variables exist in literatures that employed cointegration technique for separate country as Nigeria. This study, therefore, will fill the gap.
Undeniably, Nigeria is presently faced with the challenge of providing sustainable, adequate, reliable and efficient electricity supply to residential, commercial and industrial consumers. This situation has adversely affected the social and economic life of the citizenry (Jonathan, 2010). The trend however, has often been constrained by perennial dismal energy supply plaguing this fledgling economy. Like most economies in the West African sub-region, the country’s energy production rate continues to lag behind the rate of growth in demand from its industrial and services sectors (Adoghe, 2010; Igbinovia and Odiase, 2009; Iwayemi, 2008; Okongwu, 1986 to mention few). Although electric energy generation and supply difficulties in the country over the years are well documented, worsening supply conditions continue to heighten growing concerns in recent years about the ultimate impact of the condition on the nation’s long-term economic growth prospects and quality of life (Iwayemi,2008).
The foregoing provides the basis for examining the relationship between electricity consumption and economic growth in Nigeria.
1.2 Statement of the Problem
Electricity plays a very important role in the socio-economic and technological development of every nation. The electricity demand in Nigeria far outstrips the supply and the supply is epileptic in nature. The country is faced with acute electricity problems, which is hindering its development notwithstanding the availability of vast natural resources in the country. It is widely accepted that there is a strong correlation between socio-economic development and the availability of electricity. Given the situation above, the study seeks to examine the relationship between electricity consumption and economic growth in Nigeria.
1.3 Objectives of the Study
Generally, this study seeks to empirically examine the relationship between electricity consumption and economic growth in Nigeria.
However, it will:
- Assess the profile of electricity consumption in Nigeria for the periods 1970-2009.
- Examine the relationship between electricity consumption and economic growth in Nigeria.
1.4 Research Questions
The following questions will guide this study
- What is the trend of electricity consumption in Nigeria from 1970 to 2009?
- Does electricity consumption contribute to economic growth in Nigeria?
1.5 Hypothesis for the Study
This hypothesis was tested for the study
- H0: There is no significant relationship between electricity consumption and economic growth in Nigeria.
- H1: There is significant relationship between electricity consumption and economic growth in Nigeria.
1.6 Significance of the Study
The study is relevant in the true sense that it will help to improve the erratic supply of electricity to households, firms and government in the country. This study identifiesthe central role of electricity in the process of economic transformation. Electrical energy supply is not only a major and increasing source of energy; it is also for us a growth industry as well as ‘entirely new industry’ Therefore, this study will facilitate the effort of policy makers and government to make PHCN perform efficiently.
The importance of vibrant powers sector is necessary because of the clamour in the need to attain sustainable development. Also this empirical study will be important for policy recommendation from the point of view of electricity consumption and economic growth for Nigeria and also for global panel. The study will help provide reliable service; improve efficiency and stimulate growth for small business that rely on electricity which can have huge impact on the lives of rural and urban dwellers by creating jobs.
Households, firms and government will have to benefit from the study through improved quality, efficiency and reliability in electric supply. It will add literature to the existing field of energy economics.
1.7 Brief Methodology
The main focus of this study is to empirically examine the relationship between electricity consumption and economic growth in Nigeria. It adopts the descriptive and inferential methods to analyse the data. To complement the descriptive and analytical approaches mentioned above, the Ordinary Least Square was used. In this case one model was formulated and adequate econometric techniques adopted. The data set for this study is mainly secondary data.
The secondary data comprises annual time series covering the periods1970-2009. All the data were sourced from the World Population Indicator (2012) and Central Bank of Nigeria Annual Statistical Bulletin (2009). In this study, the real GDP is expressed in terms of million Naira (the Nigerian currency) while electricity consumption is expressed in terms of Kilowatts per hour.
1.1 Plan of the Study
The study has been divided into five chapters. The first chapter provides the background of the subject matter justifying the need for the study. Chapter two presents related literature concerning the relationship between electricity consumption and economic growth in Nigeria.
The theoretical framework and research methodology have been stated in chapter three while empirical result and discussion were made in chapter four. Concluding comments in chapter five reflect on the summary, conclusion and recommendations based on the findings of the study.
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