AGL Energy interim chief executive Graeme Hunt has signalled that a decision to go ahead with a radical restructuring of the business has effectively already been made as he scotched speculation that leadership turmoil at the giant electricity supplier reflected indecision over the plan.

Mr Hunt sought to reassure investors that lenders are on board after analysts and investors had questioned how the demerger of AGL, which has $2.8 billion of debt, could work in practice given the inability of coal power-heavy PrimeCo to shoulder debt.