A NATIONAL power company has confirmed the location of a controversial substation as it outlines plans to build 29 kilometres of giant electricity pylons along the Essex-Suffolk border. Revived plans to build the new 400,000-volt power lines were unveiled last week after being on hold for eight years. Plans were first put forward back in 2009 with an aim for completion by 2017, but were halted in 2013. The plans would see the lines built between Twinstead and Bramford, in Suffolk. Campaigners against the project at the time had concerns over the pylons and underground cabling’s impact on the rural landscape. The recent announcement of the project restarting has also sparked fresh concerns from residents over the proposed location of a substation which was previously earmarked for Castle Hedingham.