The Power Sector is often treated as synonymous with the electrical utility industry but it is much larger than that. The Power Sector encompasses a wide range of entities which are engaged in the generation, transmission or distribution of electricity; not only electricity utilities but other types of utility, industrial companies, agricultural establishments, even household generators. The capital expenditure, markets for power equipment and the infrastructure itself are wide ranging and extend beyond the electrical utilities.
The infrastructure is enormous, with more than 6,228 GW of recorded installed globally in 2015 and annual demand in excess of 359 GW, 6 million km of transmission and 71 million km of distribution lines. This is analysed in detail, with forecasts of capacity, installed plant and annual demand for every country. Generating capacity by energy source and patterns of new purchase and replacement are mapped to 2020.