 The failure of the Modernisation Plan led to a distrust of BR's financial planning abilities by the Treasury, which was to dog BR for the rest of its existence.The Modernisation Plan called for significant suburban and main-line electrification.Despite investment in two 1.5 kV DC overhead schemes only a few years earlier, outside the Southern Region this was mostly done with the new standard 25 kV AC overhead line equipment (OLE), leaving these two older systems obsolescent.