The UK’s electricity transmission network has a problem. Yet the transmission network in Great Britain is almost entirely owned by three companies, each a natural monopoly. A grid historyIt pays to understand a little of the history of power transmission in Britain. The British power transmission grid is owned today by three companies: National Grid Electricity Transmission, ScottishPower Transmission, and Scottish Hydro Electric Transmission Limited (SHETL). Independents can plan, provide and adopt new connections to the grid across the British power network.