This monograph provides an accessible, well written and detailed explanation on factors that may influence the growth of an economy with emphasis on the linkage between electricity supply cum demand and economic growth using Nigerian data. Of special interest is the systematic application of time series econometrics. In particular,stationary tests, granger causality, vector autoregressive, co-integration and error correction mechanism were explicitly applied using simple language that can aid the understanding of every reader. The monograph is an eye opener to anyone who wishes to know about developments in the Nigerian electricity sub sector. Current and prospective investors in the Nigerian energy sector will find the text useful. Undergraduate and graduate students in economics as well as those doing a major in another field, such as business management, electric power engineering and environmental studies also need the book.