A study carried out in December 2010 by Cambridge Economic Policy Associates Ltd, Sinclair Knight Merz (SKM) and GL Noble Denton for Ofgem[1]
Works out the cost of the gas and electricity transmission and distribution grids, based on what they would cost to replace immediately (the MEAV or Modern Equivalent Asset Value). They also work out the annual capital expenditure that might be required for various scenarios to 2050.