MPs call for power transmission network shake-up

By Nina Chestney LONDON (Reuters) - British MPs called on Friday for the operation of the country's energy transmission network to be transferred from National Grid to an independent system operator, similar to the model used in the United States. National Grid owns and operates Britain's main gas network and the high-voltage electricity transmission network in England and Wales, meaning it controls flows of power onto and around the grids, depending on overall supply and demand. There are simil