Electricity generator International Power's chief executive is to leave his post ten months earlier than planned.

Peter Giller is stepping down to make way for David Crane, who is being promoted from chief operating officer.

Mr Giller will become non-executive deputy chairman.

International Power's share price has collapsed since its demerger from National Power two years ago.

The group was dropped from the FTSE 100 Index last month after warning profits could be hit by falling prices in the UK and United States.