Independent advisor on climate change, environment and sustainability Charles Secrett was speaking to delegates at Civils 2008 in London and backed plans for a shared "super grid" for renewable energy between Europe, North Africa and the Middle East being developed in Germany.
"Isn't that a better project than sending out troops to the Middle East to fight a war on oil," he asked.
"And the Middle East needs this as much as we do – it's running out of oil."
Secrett argued that trends show that global oil demand is rising, which is going in the wrong direction to combat the effects of carbon emissions.
"The good news is we have the infrastructure technology to meet the challenges [of climate change]. No single country can do it alone – we've all got to act together," said Secrett.
He added that the UK must act to decentralise energy: "Why not decentralise energy and put it in places where it’s needed. It's an obscenity to run our gas and electricity from a centralised system to the extend that we do."
Secrett advised past London Mayor Ken Livingston on climate change in the capital between 2004 and 2008 and said his proposals were still under consideration by current Mayor Boris Johnson.