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    David Hirst, professional Risk Manager and Engineer with 13 years experience in the competitive European Energy markets with RWE npower Drax Power and Yorkshire Electricity

    Electricity (or \"power\" as our American cousins prefer) is taken for granted in the developed world. That we have uninterrupted and unlimited electricity at the flick of a switch is taken as a defining feature of how advanced society is. However, the global balance of supply and demand for energy commodities is changing, and there is a growing acceptance of the adverse impact energy use has on our environment. Combined, these are leading us into a period of what is likely to be major change in how electricity (power) is delivered to the people. How electricity is generated, transmitted / distributed, supplied and measured will have to change. To understand how it could change requires an understanding of how the electricity system works today - in terms of both its economics and engineering.