There is a strong case for constitutional change, he told BBC Radio Four's Today programme this morning.
'The executive has got to give up more power. There's a case for more power for parliament, for devolving more power to local councils and for local councils devolving more to local communities.'
Mr Brown said this was important in a climate where people are worried about security and about the impact of global economic change.
'We've got to show that we can protect and enhance the best in the British way of life and that means a society built around responsibilities as well as rights,' he said. 'That's what I'll be talking about today.'
January 06 Brown speech 'REINVIGORATE DEMOCRACY AT LOCAL LEVEL'
Today's Labour conference keynote speech BROWN CALLS FOR FREEDOMS FOR ECONOMIC DEVELOPMENT AND TRANSPORT FOR LOCAL GOVERNMENT