The current transmission price controls expire on 31 March 2012.
On 21 December 2009 we published an open letter providing notification of the Authority's decision to implement the next price control (TPCR5) from 1 April 2013, while allowing for a one year “adapted roll-over” of the current price control (TPCR4) for the period from 1 April 2012 to 31 March 2013. This will enable TPCR5 to reflect fully the conclusions of the RPI-X@20 project and other relevant developments in the transmission sector.