Concern over the potential need to redefine universal service to account for Internet-related services and other combinations of communication and computing motivates this study of the geographic spread of commercial Internet Service Providers (ISPs), the leading suppliers of Internet access in...

We recall the historical changes that have taken place in the power markets worldwide and that have led to a partial or full opening for competition. Afterwards we discuss power market structure with special emphasis on differences between financial or other commodity markets on one hand and the...