Speaking at the forerunner to that forum, the World Future Energy Summit in Abu Dhabi this week, Miliband said the Government would work closely with the organisers of the Future Energy series in the run-up to the London event.
Miliband said: "The European Energy Forum is an opportunity to show the world the huge strides we're taking in the UK to develop renewable and low-carbon technologies. It will help bring business together to identify investment opportunities as we develop the low-carbon energy supply we need."
The European Energy Forum on 19-21 October, will be the fifth in the Future Energy series of events and is expected to attract thousands of international delegates.
It will be staged in association with Masdar, the Abu Dhabi-based renewable energy developer.
Masdar chief executive Dr Sultan Al Jaber said: "The cutting-edge conference in London will build on the discussions in Abu Dhabi this week with special focus on necessary requirements, both financially and in terms of infrastructure, to enable projects to move forward."